I know absolutely nothing about cars, batteries, etc. I read my instructions and couldn't understand a thing! I watched your video and it was so simply! My battery was dead on my 1990 Pathfinder and all the lights came on within a minute or two! I'm impressed. Thank you so much for the easy to understand video!
I just bought the Battery Tender today for my classic car,that I store for the winter months ,I was just checking out your video on how to hook it up to my battery,thank you for showing us how👍Great Learning Video👍
Thanks for this video. My family has a vehicle at our condo in TN, but our parents are both in Assisted Living now, and my sis and I live in CA. So we’ve been using the battery tender for a while now. It seems to help. Right now I’ve got it on in the hopes that I’ll be able to get it to start again, after getting a dreaded “click click” today. Hopefully this will do it, so I don’t have to escalate to roadside service! Thanks for your clear instructions. I’ve got this video in its own special playlist! :)
Love the video. I actually bought the Deltran OBD2 connector for my unit as I have a car with the battery under the trunk floor. This particular car spends most of the time in my garage and rather than going thru a solution to wire thru the trunk floor and weatherstripping to keep the trunk lights turned off. I plug into the OBD2 adapter under the dash, open up the window a little bit and set the Tender out of the car and it works perfectly. Thought I'd share this option.
Thank you for this informative video. Was very helpful, sir. I store my van 4-6 months at a time and am on my 3rd battery. I just got this set up and it should save a lot of money & aggravation.
I must have read the manual wrong. I had the positive clip on the positive post and then grounded the negative clip to the chassis. After three hours it didn't do squat and the green light kept flashing. Clipping the positive and negative on their posts as you have done had the green light shining solidly.
Thanks for the really clear instructions! I hooked my car battery to the tender outside the car. The red light was solid. But after about 2 minutes both the red and green lights were flashing separately. I pulled the plug and repositioned the cables and it happened again after about 2 minutes. What does this mean?
Howdy! Unfortunately the alternating red and green lights either mean a bad connection from the tender to the battery terminals, or that there may be something wrong with the battery. The battery should probably be load tested at an AutoZone or the like to confirm if it is ok or is failing. Thanks!
I have the Deltran Junior 750mA model. I hooked it up yesterday to my Mazda Miata battery. It has been 24 hours and the light is till solid red on the tender. Is this normal? How long should it take to switch to the green mode?
I just put a brand new battery in my truck and will only drive it about 100 miles before it sits for several months. Will this be ok on a new battery with full charge, and also can I close my hood while it’s hooked up even though in my garage? Thank you for a great video!!
Absolutely. I use one 24/7 on my 37 Ford and 78 Harley which about never get driven anymore. No issues. I run the connector out the rear of the hood so I can close it. Also no problems. Thanks!
Excellent video and simple explanation! I have owned a Battery Tender for a year now. The user manual was so confusing, I was too afraid to hook it up. It spoke of checking polarity (???) and have different instructions depending on whether the NEG or POS was grounded and stuff about connecting one of the clips to the “vehicle chassis or engine block away from battery”???? Is it safe to assume that my NEG battery post is the grounded one and that it’s okay to connect the NEG terminal from the Battery Tender to that NEG post on the battery? I have an older Mazda Miata MX5. Again, thank you for making this video and sharing it with the auto ignorant!
Howdy! Yes the negative post, with the minus sign usually next to it, is the ground. The black clip will hook to it and the red to the positive post. Thanks!
I had to buy a new battery for my John Deere mower because the old one tested bad and was 5 years old. After connecting the new battery, I put a new one of these tenders on it. It immediately went to "solid red". Should the new battery really need charging? I use the battery cable claps to connect it. Thank you
Hi New subbie 🤗 Questions: Can you place it on a dead battery to recharge it? How often should you use the Tender on one vehicle? Thinking of buying one. Thanks for sharing.
Howdy! Best I can say for rejuvenating a dead battery is maybe. I've tried that and it took a long time but did work. Another time the battery had an internal problem and it cooked the tender. If the battery is ok internally it might work, damaged internally, nothing will help. As far as how often, I have four units. One each on my 3500, 37 Ford, 78 Harley and my Polaris ranger. They are hooked up and on whenever I'm not driving them which is most of the time. No issues at all. Thanks!
Can you make a video on how to connect them with the screws? I have to trickle charge my power wheelchair batteries over the winter. Is screwing them on better for a 4 month period or can I just use the clip cables?
Honestly, the way I've screwed them on some of mine is to just remove the fastener for the battery clamp without disturbing the clamp and attaching the wires to the clamp bolts. That said, I have several batteries that just use the alligator clips for months to years at a time with no issues. Whatever is easiest is what I would suggest. Thanks!
This tender is great for long-term maintenance, but is there any way to use it to jump your battery in a pinch? Perfect example- my barely used 335 convertible is currently in the garage- dead is a door nail. I’m sure it’ll take a few days to get back up to speed.
That's a good question as AGM batteries can be a bit special. According to the battery tender website, the usual units that I have are compatible with AGM batteries so if it were mine, I'd use it. Thanks!
My kids' car is always in my driveway when they go away to college. How often would I need to hook up the battery tender to keep the battery healthy? I can't leave the hood open all day, every day in an outdoor driveway. Add I don't want to drive it around 6 miles every few days.
The standard sized unit I use on my dually came with a pigtail that I attached to the battery and run out of the hood at the cowl. So the hood closes normally and I just hook it up when I park it. If there is no significant drain, it probably would work hooked up for a couple days every few weeks. For me, as I don't need to move the vehicle unless I'm using it, I just leave it plugged in continuously.
Since undergoing throat cancer a few months ago, and the chemo, and recovery, etc, I haven't been able to drive my Dodge Charger. I'll start it every week or so, when I remember to do so. But inevetablly the battery is dead, and needs a boost start. Because I have the 5.7 Hemi, will this 1.25A model be my best option for a battery tender? Or should I go with a stronger unit that they sell? Your feedback/advice would be very much appreciated. Thumbs up for yourvideo too
@@therhino9661 has it maintained your charger well? My older mother with poor health has a '09 challenger r/t that's constantly killin batteries in the garage and I was thinking about using a Tender but didn't realize I could keep the battery connected in the car, figured I had to take the thing out to charge. Which would be a pain for her to do without calling me over lol.
thank's for this video! can i keep the clips or the other cables connected (the loose ones) all time to the battery even when i drive the car or this can drain the battery?
Howdy! Yes. For permanent mounting of the pigtail I would recommend using the one that can attach with the eyes rather than the clips. That said there is no issue leaving that piece attached during use. All of my vehicles are set up with a permanent pigtail. No voltage drain because there is nothing connected between the battery cables that needs power. They're just separate wires for the charger. Thanks!
Does it matter if this stays on for months? I plan on keeping my cars in the garage until around April so should I just hook them up to these and not worry about it until then?
A good maintainer is no issue leaving on long term. I've got four running continuously on my 78 Harley, 37 Ford, ram 3500 and my side by side. If I'm not using them they're plugged in. No issues. Thanks!
I know this is an old video but hoping to get an answer. I have 2020 Ford ranger and have been told NOT to use the neg post on the battery but to use a grounding bolt ....because it can screw up some of the newer electronic systems. Any truth to this? Thanks
💥Hi. Thanks for the video. My battery tender plus is almost identical to yours aside from not having the red and green rectangles near each light. When I plugged it in the red is solid and the green is blinking. Is that normal operation.??
Howdy! I believe that when the red is solid and the green is blinking that it is indicating that the battery is >80% charged. Once it gets to near 100% I think it will go to just green on solid and will go into maintenance mode. Thanks!
@@aaronsrose ok, thanks Aaron. I’ll let it run for a while and see what happens. It’s on my dads ‘93 Waverunner and I only remember seeing a solid green light mostly and once just red when he forgot to hook up the charger. It was always in his garage and now I have out in my driveway in the cold NJ temps.
I've thought about this a bit as a friend has a large RV with 4 house batteries. I believe it will work if the batteries are not low to begin with. The tenders are generally set up to only provide a set maximum amperage so as to not damage themselves or the batteries. It might take longer to bring the system up but it should work in my opinion. Thanks!
motorcycle batts, jet skis batts, John Deere batt.,woodchipper batt, batts that just add up over time . Thinking just getting a unit to charge slowly over time . Batts are crazy money now. Thanks 🙏
Ahhh. I misunderstood. Absolutely. If my vehicles were in the same location, is definitely consider a tender that had four individual circuits. I wouldn't expect any issues with heat as it's OEM. Thanks!
I have actually done that with my old stratus that would forget how to idle if you disconnected the battery. It's a bit tweaky as you need to make sure the clips stay connected to the terminals while you do the battery change, but I have done it in the past. Thanks!
I read it is not a good idea to connect the negative part of the charger cable directly to the battery negative terminal. Better to connect to proper ground area on vehicle.
So it's okay to leave the battery tender disconnect end hooked up permanently to the battery and drive around with it? It won't drain the battery or anything bad if you leave it attached?
Mine keep just keeps blinking even after I repeated what you did. I'm thinking this thing has blown capacitor I will inspect and change it if necessary.
There is absolutely no charge in my vehicle, I cannot unlock/lock with the power clicker, much less the engine doesn't turn at all. I bought the battery tender plus in hopes of connecting it to my battery, only to find out that the red light was flashing, no matter which way I connect it. What does this mean?
Top of the head, I'd say the battery has an internal short. If you have another known good battery I'd completely disconnect the current one and see if the good one let's it power up. If not then I'd start checking the big fuses from the battery to the fuse boxes. Good luck.
I left my charger plugged in for electrolysis while connected to a 12v battery and now the battery tender blinks both red and green even when polarity is correct. Any ideas? Thanks!!
If I recall correctly red and green blinking alternately usually means the battery tender thinks the battery has failed and is unable to charge it. Might be worth taking it to an autozone or lithe shop to get it a on a serious battery testert to confirm. Thanks!
So...i connected my tender to my battery...got the steady red light...let it sit awhile...came back to the flashing red and green and the battery completely dead. Any suggestions?
Depending on the age of the battery and how it's been treated, it may have just died. I just replaced the one in my 37. Been on a tender for 4 years, said good, but would drop to 8v when a load was applied. Something internally just decided to quit.
If you keep your car on the drive way, could you keep the unit inside and just hardwire it, without having to worry about water damage on the cables? I know the cables are a bit short but I could park right against my garage. I would just like to keep the unit inside so it's safe and away from rain and snow. My problem is, I have a very short commute about 1 mile and my battery doesn't have enough time to charge and sometimes it drops below 12v, so I'm hoping this would top it off safely.
I actually did that. If you have a 12v lighter outlet that is hot when the key is off, you can use the adapter and charge through the outlet. I just ran an extension cord in the door and it worked perfectly when I had a 5 minute commute working a turn around last year.
@@aaronsrose Thanks for the quick reply, I'm a bit confused with the 12v lighter charging method. If you don't mind could you please explain the process a bit more.
Sure. The better tenders come with an adapter plug that looks like what you plug into a cigarette lighter. It hooks to the tender like the battery clamps. If there is a 12V socket in your vehicle that can be used when the key is off, you can plug that cigarette lighter plug into it, hook it to the tender and the tender will charge the batter through the lighter from inside the car. The only thing to check is that you need to be able to get power form the socket when the key is off. If there is no connection to the battery when you park the car, it won't be able to charge. I hope that helps.
@@aaronsrose Oh I didn't think that was possible to charge your battery through the 12v socket, I'll have to test it now. I actually ordered this tender from amazon and an extra 12.5' extension cable that comes with so if I have no power when the car is off from the 12V I can still leave the tender inside my garage and use the extension cable. Thanks again for all your help, your video gave me the confidence to make this purchase.
I wouldn't go series as then you're at 36V. I do use a single tender on my Ram 3500 cummins only hooked to one of the two batteries, so it certainly works when the batteries are wired in parallel. Thanks!
You don't need a battery tender. You can charge the battery every few months and your battery won't die prematurely. I just purchased a Battery Tender, but I have been charging my second vehicles battery with a regular charger since 2007. A battery tender isn't going to tell you if the battery has gone bad either.
Howdy! Not really. It's just for keeping good batteries good. Doesn't really have the juice for a jump start. Though sometimes if the battery is just flat and not ruined, hooking it to one of these for several days may bring it back.
Hello. I was checking this device on amazon, and it says it only maintains automotive, but it will not charge. How does this device maintain its charge without being charged. Thank you.
Basically, it will maintain a battery that is good from discharging over time but if the battery is dead or very low it does not have enough amps to actually charge it from flat. So it will keep a good battery from dying but it's not like a jump pack.
Honestly, I've done it both ways and not had any problems. I typically leave the charger plugged into the wall and connect and disconnect at the battery. Thanks!
Just bought a duralast battery charger and it’s saying to connect the positive clamp to the negative terminal and the negative clamp to the positive terminal. Shits so confusing
That seems odd. I wouldn't hook it up backwards. Most of these chargers have computers in them that will keep it from damaging stuff in case of reversed polarity. It's check the output of the box with a multimeter to see where the positive wire really is. Thanks!
Not that I can tell. They are pretty low Amp devices and once the battery is topped off, they use very little energy to maintain it. Certainly there is some cost, but with batteries as expensive as they are the benefits greatly outweigh it for me. Thanks!
On a normal negative ground vehicle they say to attach the negative ring or alligator clip to the chassis, but I don’t consider that necessary if the battery is in good shape. I think that’s to remove the chance of a spark when clipping the negative on, but I’ve never had a problem with a direct ring or alligator clip connection.
I know absolutely nothing about cars, batteries, etc. I read my instructions and couldn't understand a thing! I watched your video and it was so simply! My battery was dead on my 1990 Pathfinder and all the lights came on within a minute or two! I'm impressed. Thank you so much for the easy to understand video!
I just bought the Battery Tender today for my classic car,that I store for the winter months ,I was just checking out your video on how to hook it up to my battery,thank you for showing us how👍Great Learning Video👍
Thanks for this video. My family has a vehicle at our condo in TN, but our parents are both in Assisted Living now, and my sis and I live in CA. So we’ve been using the battery tender for a while now. It seems to help. Right now I’ve got it on in the hopes that I’ll be able to get it to start again, after getting a dreaded “click click” today. Hopefully this will do it, so I don’t have to escalate to roadside service! Thanks for your clear instructions. I’ve got this video in its own special playlist! :)
Love the video. I actually bought the Deltran OBD2 connector for my unit as I have a car with the battery under the trunk floor. This particular car spends most of the time in my garage and rather than going thru a solution to wire thru the trunk floor and weatherstripping to keep the trunk lights turned off. I plug into the OBD2 adapter under the dash, open up the window a little bit and set the Tender out of the car and it works perfectly. Thought I'd share this option.
Thank you for this video. I watched before hooking up to my Mustang. Much appreciated.
Thanks for the info. regarding this battery charger. Very helpful. 👍🏽
Thanks for posting. Will use one for storing my classic car over the winter months.
Nice,...straightforward helpful video. Just what I needed. Thanks
Thank you for this informative video. Was very helpful, sir. I store my van 4-6 months at a time and am on my 3rd battery. I just got this set up and it should save a lot of money & aggravation.
Glad it helped!
Thanks For The Video , My Bike Is Running Perfectly Again !
Great video! Thanks for the hardwired example
Great video man thanks for doing that you’ve clarified exactly what I thought, but now I’m confident I know what I’m talking about ha ha
🍻
Thanks ! Wanted to see if the BT-Plus could be 'clipped' to a connected battery-in-car, like you demo`d...
Thanks for the video! I’m going to try this today. Hopefully, it’ll be fully charged by tomorrow
I must have read the manual wrong. I had the positive clip on the positive post and then grounded the negative clip to the chassis. After three hours it didn't do squat and the green light kept flashing. Clipping the positive and negative on their posts as you have done had the green light shining solidly.
Thank you so much. No longer intimidated to do this myself.
Just what I needed to get mine started! :o)
Thank you so much. You really help me out
Thank you ! I needed that reminder :)
Thanks for a nice quick simple video.
I’m sold.
Great video! On your diesel, why did you use the eyelet connections instead of the alligator clips?
The eyelets allowed for a permanent installation. No worries about the alligator clips popping off. Thanks!
Thank you for showing how to use it. Rest of the videos just show the exiting unboxing
Thanks for the really clear instructions! I hooked my car battery to the tender outside the car. The red light was solid. But after about 2 minutes both the red and green lights were flashing separately. I pulled the plug and repositioned the cables and it happened again after about 2 minutes. What does this mean?
Howdy! Unfortunately the alternating red and green lights either mean a bad connection from the tender to the battery terminals, or that there may be something wrong with the battery. The battery should probably be load tested at an AutoZone or the like to confirm if it is ok or is failing. Thanks!
I have the Deltran Junior 750mA model. I hooked it up yesterday to my Mazda Miata battery. It has been 24 hours and the light is till solid red on the tender. Is this normal? How long should it take to switch to the green mode?
Thanks so much for this!
I just put a brand new battery in my truck and will only drive it about 100 miles before it sits for several months. Will this be ok on a new battery with full charge, and also can I close my hood while it’s hooked up even though in my garage?
Thank you for a great video!!
Absolutely. I use one 24/7 on my 37 Ford and 78 Harley which about never get driven anymore. No issues. I run the connector out the rear of the hood so I can close it. Also no problems. Thanks!
Excellent video and simple explanation! I have owned a Battery Tender for a year now. The user manual was so confusing, I was too afraid to hook it up. It spoke of checking polarity (???) and have different instructions depending on whether the NEG or POS was grounded and stuff about connecting one of the clips to the “vehicle chassis or engine block away from battery”????
Is it safe to assume that my NEG battery post is the grounded one and that it’s okay to connect the NEG terminal from the Battery Tender to that NEG post on the battery? I have an older Mazda Miata MX5.
Again, thank you for making this video and sharing it with the auto ignorant!
Howdy! Yes the negative post, with the minus sign usually next to it, is the ground. The black clip will hook to it and the red to the positive post. Thanks!
I had to buy a new battery for my John Deere mower because the old one tested bad and was 5 years old. After connecting the new battery, I put a new one of these tenders on it. It immediately went to "solid red".
Should the new battery really need charging? I use the battery cable claps to connect it. Thank you
when done using it unplug from the wall outlet first
Thanks a lot Dude.
Hi New subbie 🤗 Questions: Can you place it on a dead battery to recharge it? How often should you use the Tender on one vehicle? Thinking of buying one. Thanks for sharing.
Howdy! Best I can say for rejuvenating a dead battery is maybe. I've tried that and it took a long time but did work. Another time the battery had an internal problem and it cooked the tender. If the battery is ok internally it might work, damaged internally, nothing will help. As far as how often, I have four units. One each on my 3500, 37 Ford, 78 Harley and my Polaris ranger. They are hooked up and on whenever I'm not driving them which is most of the time. No issues at all. Thanks!
Can you make a video on how to connect them with the screws? I have to trickle charge my power wheelchair batteries over the winter. Is screwing them on better for a 4 month period or can I just use the clip cables?
Honestly, the way I've screwed them on some of mine is to just remove the fastener for the battery clamp without disturbing the clamp and attaching the wires to the clamp bolts. That said, I have several batteries that just use the alligator clips for months to years at a time with no issues. Whatever is easiest is what I would suggest.
Thanks!
This tender is great for long-term maintenance, but is there any way to use it to jump your battery in a pinch? Perfect example- my barely used 335 convertible is currently in the garage- dead is a door nail. I’m sure it’ll take a few days to get back up to speed.
They don't put out enough amps to use as a jump box. But if the battery isn't junk, it should be able to get it charged back up in a few days.
Thanks for posting this, just installed one and this was really helpful
can you use the charger on an AGM battery the deep cycled ones or do i need an battery charger for deep cycle ? nice info
That's a good question as AGM batteries can be a bit special. According to the battery tender website, the usual units that I have are compatible with AGM batteries so if it were mine, I'd use it. Thanks!
My kids' car is always in my driveway when they go away to college. How often would I need to hook up the battery tender to keep the battery healthy? I can't leave the hood open all day, every day in an outdoor driveway. Add I don't want to drive it around 6 miles every few days.
The standard sized unit I use on my dually came with a pigtail that I attached to the battery and run out of the hood at the cowl. So the hood closes normally and I just hook it up when I park it. If there is no significant drain, it probably would work hooked up for a couple days every few weeks. For me, as I don't need to move the vehicle unless I'm using it, I just leave it plugged in continuously.
Since undergoing throat cancer a few months ago, and the chemo, and recovery, etc, I haven't been able to drive my Dodge Charger. I'll start it every week or so, when I remember to do so. But inevetablly the battery is dead, and needs a boost start. Because I have the 5.7 Hemi, will this 1.25A model be my best option for a battery tender? Or should I go with a stronger unit that they sell? Your feedback/advice would be very much appreciated. Thumbs up for yourvideo too
Thanks! It's think that any of the medium sized ones should work. I use one similar to this on the dual batteries in my 3500 and it works fine.
@@aaronsrose That'll do fo me. Thank you very much for your honest feedback Amazon, here I come. Best regards to you and yours, Sir
@@therhino9661 has it maintained your charger well? My older mother with poor health has a '09 challenger r/t that's constantly killin batteries in the garage and I was thinking about using a Tender but didn't realize I could keep the battery connected in the car, figured I had to take the thing out to charge. Which would be a pain for her to do without calling me over lol.
@@aaronsrose appreciate the video, very straight forward and to the point,🍻
thank's for this video! can i keep the clips or the other cables connected (the loose ones) all time to the battery even when i drive the car or this can drain the battery?
Howdy! Yes. For permanent mounting of the pigtail I would recommend using the one that can attach with the eyes rather than the clips. That said there is no issue leaving that piece attached during use. All of my vehicles are set up with a permanent pigtail. No voltage drain because there is nothing connected between the battery cables that needs power. They're just separate wires for the charger. Thanks!
@@aaronsrose make sense.thank you so much
Thanks for posting
Does it matter if this stays on for months? I plan on keeping my cars in the garage until around April so should I just hook them up to these and not worry about it until then?
A good maintainer is no issue leaving on long term. I've got four running continuously on my 78 Harley, 37 Ford, ram 3500 and my side by side. If I'm not using them they're plugged in. No issues. Thanks!
Aaron Rose awesome thanks for the info
Does the battery tender plus shut off once the battery is fully charged or does it always stay on? I don't wanna burn up the battery cells.
The battery tender stays on but goes into a float mode so it will not hurt the battery. Thanks!
For the outlet cord can i use that to charge the tender battery and use it to charge my vehicle without being plugged into an outlet?
No sir. Tender must be plugged into the wall to function properly.
@@aaronsrose thanks boss
Very helpful
I know this is an old video but hoping to get an answer. I have 2020 Ford ranger and have been told NOT to use the neg post on the battery but to use a grounding bolt ....because it can screw up some of the newer electronic systems. Any truth to this? Thanks
I don't see why it would matter honestly but if it has a good ground point elsewhere that should be fine too.
Can I use a battery tender on lead acid battery that is not hook up to a car?
I do. It shouldn't really need it as there should be no drain but I've not had a problem with it.
💥Hi. Thanks for the video. My battery tender plus is almost identical to yours aside from not having the red and green rectangles near each light. When I plugged it in the red is solid and the green is blinking. Is that normal operation.??
Howdy! I believe that when the red is solid and the green is blinking that it is indicating that the battery is >80% charged. Once it gets to near 100% I think it will go to just green on solid and will go into maintenance mode. Thanks!
@@aaronsrose ok, thanks Aaron. I’ll let it run for a while and see what happens. It’s on my dads ‘93 Waverunner and I only remember seeing a solid green light mostly and once just red when he forgot to hook up the charger. It was always in his garage and now I have out in my driveway in the cold NJ temps.
Have you any thoughts on the bat tender with 4 banks ? Charging 4 batts at 1 time? Is there a heat danger?
I've thought about this a bit as a friend has a large RV with 4 house batteries. I believe it will work if the batteries are not low to begin with. The tenders are generally set up to only provide a set maximum amperage so as to not damage themselves or the batteries. It might take longer to bring the system up but it should work in my opinion. Thanks!
motorcycle batts, jet skis batts, John Deere batt.,woodchipper batt, batts that just add up over time . Thinking just getting a unit to charge slowly over time . Batts are crazy money now. Thanks 🙏
Ahhh. I misunderstood. Absolutely. If my vehicles were in the same location, is definitely consider a tender that had four individual circuits. I wouldn't expect any issues with heat as it's OEM. Thanks!
Can I use this to save my car's computer settings when I'm swapping out a car battery? Or do I need to plug something into the OBD port? Thanks.
I have actually done that with my old stratus that would forget how to idle if you disconnected the battery. It's a bit tweaky as you need to make sure the clips stay connected to the terminals while you do the battery change, but I have done it in the past. Thanks!
@@aaronsrose Thank you...!
Just bought same one
I read it is not a good idea to connect the negative part of the charger cable directly to the battery negative terminal. Better to connect to proper ground area on vehicle.
I've done it both ways for years and had no issue with either. As long as your connections are solid I don't think it should matter. Thanks!
Is it possible to leave your vehicle hooked up to the tender for several days, outside during winter?
I'd try to protect the unit from the weather, but I leave all 5 of mine hooked up 24-7-365.
@@aaronsrose thanks for the information.
So it's okay to leave the battery tender disconnect end hooked up permanently to the battery and drive around with it? It won't drain the battery or anything bad if you leave it attached?
Howdy! In my experience. Yes. I've been doing that on about all my cars for at least 10 years and have had no issues. Thanks!
@@aaronsrose Awesome! And thanks for replying!
I have battery chargers installed under the hoods of my cars. All I have to do is run an A/C extension cord to any of my vehicles and plug it in.
Thank you
Thanks.
Mine keep just keeps blinking even after I repeated what you did. I'm thinking this thing has blown capacitor I will inspect and change it if necessary.
I've had a couple fail like that. Though I've not tried to repair them yet. Thanks!
Can you leave the charger on the car with the car in a closed garage?
I do, yes. Should be no issue. Thanks!
There is absolutely no charge in my vehicle, I cannot unlock/lock with the power clicker, much less the engine doesn't turn at all. I bought the battery tender plus in hopes of connecting it to my battery, only to find out that the red light was flashing, no matter which way I connect it. What does this mean?
Top of the head, I'd say the battery has an internal short. If you have another known good battery I'd completely disconnect the current one and see if the good one let's it power up. If not then I'd start checking the big fuses from the battery to the fuse boxes. Good luck.
Mines is flashing red and green and I have a battery I purchased last year motorcycle battery and it's hooked up correctly
If both lights are flashing it's a bad battery or connection, I think if the green is solid and red is flashing it's just almost fully charged.
I left my charger plugged in for electrolysis while connected to a 12v battery and now the battery tender blinks both red and green even when polarity is correct. Any ideas? Thanks!!
If I recall correctly red and green blinking alternately usually means the battery tender thinks the battery has failed and is unable to charge it. Might be worth taking it to an autozone or lithe shop to get it a on a serious battery testert to confirm. Thanks!
So...i connected my tender to my battery...got the steady red light...let it sit awhile...came back to the flashing red and green and the battery completely dead. Any suggestions?
Depending on the age of the battery and how it's been treated, it may have just died. I just replaced the one in my 37. Been on a tender for 4 years, said good, but would drop to 8v when a load was applied. Something internally just decided to quit.
Motorcycle battery? Same here.
I’m having the same issue, and apparently this is a very common problem. Money down the drain.
Can the box stay under hood when charging
Won't be an issue unless you forget it in there when you drive off.
If you keep your car on the drive way, could you keep the unit inside and just hardwire it, without having to worry about water damage on the cables? I know the cables are a bit short but I could park right against my garage. I would just like to keep the unit inside so it's safe and away from rain and snow. My problem is, I have a very short commute about 1 mile and my battery doesn't have enough time to charge and sometimes it drops below 12v, so I'm hoping this would top it off safely.
I actually did that. If you have a 12v lighter outlet that is hot when the key is off, you can use the adapter and charge through the outlet. I just ran an extension cord in the door and it worked perfectly when I had a 5 minute commute working a turn around last year.
@@aaronsrose Thanks for the quick reply, I'm a bit confused with the 12v lighter charging method. If you don't mind could you please explain the process a bit more.
Sure. The better tenders come with an adapter plug that looks like what you plug into a cigarette lighter. It hooks to the tender like the battery clamps. If there is a 12V socket in your vehicle that can be used when the key is off, you can plug that cigarette lighter plug into it, hook it to the tender and the tender will charge the batter through the lighter from inside the car. The only thing to check is that you need to be able to get power form the socket when the key is off. If there is no connection to the battery when you park the car, it won't be able to charge. I hope that helps.
@@aaronsrose Oh I didn't think that was possible to charge your battery through the 12v socket, I'll have to test it now. I actually ordered this tender from amazon and an extra 12.5' extension cable that comes with so if I have no power when the car is off from the 12V I can still leave the tender inside my garage and use the extension cable. Thanks again for all your help, your video gave me the confidence to make this purchase.
Could you hook 3 batteries in series together ?
I wouldn't go series as then you're at 36V. I do use a single tender on my Ram 3500 cummins only hooked to one of the two batteries, so it certainly works when the batteries are wired in parallel. Thanks!
@@aaronsrose Yes , sorry that's what I meant , positive to positive , neg to neg .
Thanks for getting back so quick !
You don't need a battery tender. You can charge the battery every few months and your battery won't die prematurely. I just purchased a Battery Tender, but I have been charging my second vehicles battery with a regular charger since 2007. A battery tender isn't going to tell you if the battery has gone bad either.
you sound like Ernie johnson, of NBA tnt
Thanks
What if it’s still blinks red? Complete dead?
Cost efficient
Can this unit be used to jumpstart a dead battery?
Howdy! Not really. It's just for keeping good batteries good. Doesn't really have the juice for a jump start. Though sometimes if the battery is just flat and not ruined, hooking it to one of these for several days may bring it back.
@@aaronsrose thank you great video!
Hello. I was checking this device on amazon, and it says it only maintains automotive, but it will not charge. How does this device maintain its charge without being charged. Thank you.
Basically, it will maintain a battery that is good from discharging over time but if the battery is dead or very low it does not have enough amps to actually charge it from flat. So it will keep a good battery from dying but it's not like a jump pack.
Will it charge my trolling motor battery?!?
Howdy! If it is a 12V system, yes. If it's 24 or 36V no, unless you disconnect the batteries from each other and charge them individually. Thanks!
Can I leave this on for months at a time?
With all of mine, boat, 3500, harley and sxs, I do. They are always hooked up if they're not being used.
From the manufacturer videos and in booklet u get with it.all battery tenders are made for plug in and leave for months
This guy sounds like ernie johnson from inside the nba TNT!
I thought you never plug into the car first? Always plug in the wall then the car?
Honestly, I've done it both ways and not had any problems. I typically leave the charger plugged into the wall and connect and disconnect at the battery. Thanks!
Just bought a duralast battery charger and it’s saying to connect the positive clamp to the negative terminal and the negative clamp to the positive terminal. Shits so confusing
That seems odd. I wouldn't hook it up backwards. Most of these chargers have computers in them that will keep it from damaging stuff in case of reversed polarity. It's check the output of the box with a multimeter to see where the positive wire really is. Thanks!
@@aaronsrose it was actually just a warning light to let you know if they’re hooked up backwards lol.
Why does the manual for this warn, "connect the negative clip to the vehicle chassis"?
A lot of these say that. I think it's too reduce to very slight chance of a spark near a battery that could be venting a little hydrogen gas. Thanks!
Have the clips on the right position yet the red light still blinks
I think that usually means the battery is too dead to recharge.
@@aaronsrose managed to get the dash lit up but it took a jump from another car to turn over
Do you notice a big increase in electricity bill keeping it on 24/7?
Not that I can tell. They are pretty low Amp devices and once the battery is topped off, they use very little energy to maintain it. Certainly there is some cost, but with batteries as expensive as they are the benefits greatly outweigh it for me. Thanks!
Why do you need to plug the charger to jumpstart the car? 🙄
Hi
Hybrid sienna
While charging in the vehicle you are not suppose to connect the - cable to the battery. Read the instructions.
On a normal negative ground vehicle they say to attach the negative ring or alligator clip to the chassis, but I don’t consider that necessary if the battery is in good shape. I think that’s to remove the chance of a spark when clipping the negative on, but I’ve never had a problem with a direct ring or alligator clip connection.
EL Ripley they probably want to cover their ass in case of lawsuits.
supposed to put the other clamp to ground, you aren't doing this right, too many errors
not supposed to do this outside