DIY TIPS!!! FIXING YOUR DEAD DRILL BATTERIES!!!!
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- เผยแพร่เมื่อ 30 ก.ย. 2024
- FIXING YOUR DEAD DRILL BATTERIES!!!!
In this video I will show you how to revive a dead battery instead of spending a lot of money replacing them.
If you wish to just buy replacement batteries click for the Amazon link below:
amzn.to/36PcYYD
3 years later and this still working. Thanks for the tip my friend!!!!
Great to hear!
First of all this won't fix a dead cell in your pack, and most people don't have a NEW BATTERY to jump with.
This does fix flat cells I reset batteries quite often I don’t use this method I use wires but it does seem to work brought a flat battery back to new condition charges to 21.5 v from flat so guess it does work but it’s a 50/50 not every time would it work but if you don’t try you’ll never know if you’ll have it working again so I’d recommend doing it but outside incase it reverses which they can if the battery becomes faulty but it’s up to the person who’s doing there choice of what they do with there battery but good luck to anyone resetting them and nice vid as well 👍
Thank you ! I have 5 batteries that were dead and now working 😊
wondering why you just did not make up 2 jump wires in stead of scissors which may not always make contact where they bolt togather, and besides that i think you are full of crap.
I fixed my dewalt batteries by buying Milwaukee tools. No comparison!
Good answer,...I did similar thing but with Makita Lithium battery powered tools!
good one you got me rolling....
Lithium ion batteries have much more energy than Nicads. My lads said "Dad, don't muck around with Lipolys, they're much too dangerous. Nicads & Nickle metal hydroxides are only batts I "fry whiskers off" using an higher voltage for a "flash". Funny that Paul; my friend gave me his deWalt Post battery Nicad blackbox set ($1500 yrs ago) & bought Milwaukee/ No comparison he says. Hence sons & I are deWalt users. Amazing tools. My dad had an alloy Black&Dekker skill saw, handsaws & built 2houses in his short 49yrs. Fred NZ
Dude dewalt batteries are way better than the Chinese Milwaukee batteries
👍I know that's rite
This trick worked the first time, but now It's pointless and I have two garbage batteries.
Used alligator clips and did just great
The Battery Builders Guide: ⏩ tinyurl.com/5h5s8erc How to Build, Rebuild and Recondition Lead-Acid Batteries
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I tried scissors and also had a rock and paper on stand by .
But did you do it .. one two three.. times? Hmmmm?
Perfect!
tHIS ALSO WORKS WITH BATTERIES FROM MY GAS GENERATOR AND BATTERIES FROM UPS UNITS.
also sometines the connections carbonise like they are burnt.i found a little rub with a jewelers file freshens them up again
The dead battery looks like it has been just taken out the box and is dead...?!
Did the battery drill for a few years and got sick of the lack of power + the cost for another battery! For a number of years now I'm happy using a extension cord which never loses power... + I don't have to keep buying expensive batteries that have to be recycled once it can't be recharged. The battery drill is great if the electricity is unavailable.
Built a house with a Porter Cable 14V. Switched to Ryobi. For non-professional but serious home use - the 18V Li Ryobi family rocks.
As for yard tools, I think Ego is fine. I had American Lawnmower/Zombi 58V. Not going back to cords and gas.
CJ, don't forget the power you get from as you put it, extension cord. Even brand new battery fully charged won't match the power of corded tools.
You can also do a similar method to your car battery that goes dead. You need to have a charger that is rated for at least 200 amps. There's a TH-cam video on it
Try dragging an extension cord around a job site.
@@packrat9433 , miss
You are genius 👍I can't believe I bought milwaukee battery 6 months ago I tried to charge it gave me broken flashing light I did exactly what you said and now it's working thank you so much 👍🙏
THIS is a good video in that it shows it is possible to get a little more life out of the pack.However there is a video out where the guy explained JUST because the drill spins DOES NOT mean the battery is GOOD. I thought why the hell not.HE SHOWED WHY.!!! you need to put the drill under a LOAD,TRY drilling a 1/2 hole in wood with pressure.IT may stop dead let off the pressure it runs.He explained it this way.IT takes 18 volts to spin the motor but very little amperage.THE AMPS the battery can keep putting out are what has the POWER.To do it right you really need to replace the cells that no longer have CAPACITY to hold amps.Hope this helps you guys that are like me and like to mess around getting stuff to work again for fun.
Yeah, internal resistance is another factor in batteries dying, anything from an old AAA zinc-carbon to a car battery. In flashlight batteries, over time gas bubbles build up around one terminal and that obviously limits the output current, I suspect something similar happens in nicads but I'm just guessing. It's independent from the reversible nickel crystal short circuits that can be zapped as seen in the video, but as the battery ages both processes occur.
Thanks so much! Best tip I've found on TH-cam that saved me from having to buy four new batteries. The fifth had enough of a charge to recharge, and then I used that with the scissors to give the other four a starter charge to fully charge them. Great job!
Glad it helped!
I had several dead batteries, instead of this, remove the battery packs out of the cases, use a ohmmeter to see which doesn’t have any voltage (check after having on charger) and replace that cell from one of the other ones, most packs only have one dead cell keeping the battery from charging full. Just need a soldering iron. I’ve made 3 chargeable batteries saving $$$ until I run out of replacements.
Xz0
You have saved me a fortune! We have 20+ drills 3 corded and 1 working battery charged. Thanks!!!
@@violahernandez6446 7
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Absolutely brilliant! This totally worked for me. Thank you so much.
I experienced this with DeWalt drill. It's a waste of time and effort. Even if you can make them charge, they don't hold the charge too long at work sites. Very annoying.
Would they hold a charge better if just used around the garage?
This method worked fine for me with a 12V Li-Ion 2Ah Bosch battery, which seems to have good capacity after being revived and charged. It got overheated several times during charging after the initial boost presented in this video. I left it to cool down, and then resumed normal charging until full.
The battery was dead right from the start after unpacking the new drill, I am glad I kept it around until I saw this video, thank you!
I suspect that this method is very useful to get a battery out of a deeply discharged state, where the charger will not start doing it's job. What I mean is that it's not going to make wonders with a battery that has reduced capacity / dead cells after a lot of use.
O
Dammit... I looked all through my husband's scissor drawer and all I could find were these things that looked like wires with alligator clips on both ends..
😂
He goes for the heaviness of the material in the scissors to transfer a lot of power in a short time -- A thinner wire has too much resistance to work effectively -- 10 guage wire would work. But it has to be heavy wire.
@@anneinfurna8528 I'm hoping that you are joking!
if he had them in his drawers you need to do some questioning about that......lol
Any of them have a little bit of rolled paper in the clip, burnt at the end?
At least with scissors you can cut the circuit if something goes wrong. 🙄
😆
You will notice the one rejuvenated doesn't have as much power.
LOL , yes it has about 23.7 seconds of power . :-(
We're
can't believe! just save me 80 dollars. thanks.
Glad it worked. Thanks for watching.
Worked perfectly for me. I had lost one battery pack in my attic 2 years ago and recently found it in my blown insulation above. I used small electrical jumpers for about a minute and then charged it all the way through. Thanks for the advice. Beats $133 for a battery at Home Depot!
The first thing this old Guitar Doctor (Stars Guitars in San Francisco "Back in the day") thought of was to replace the pair of scissors with 4 alligator clips, one at each end of two jumper wires.
Yep!
A bit safer!!
The wires heat up too quickly. Use scissors instead, they won't heat up. Do your own video if you think you can do better.
@@stefanmeyers2808 I can do better.What he is doing is a total temporary fix on dead batteries that won't hold a charge but a few minutes.Been there.Done that.Buy new tools,especially if they are DeWalt.
@@larrynew7258 If a person doesn't need or can't afford new tools, then your way would be more expensive. He has helped me, you haven't. If you've bin there done that, then why have you come back to watch it again? You remind me of my dog that likes to return to it's vomit.
The good battery powered the drill faster than the recharged ones. You could hear the difference. Pressing the trigger is no real test of the rejuvenated battery's readiness to tackle jobs. Instead, drive a screw with it to see whether it does the job or poops out.
or a cordless circular saw
Yes you can hear the recharged batterys are not full charged and are slowly dying, sorry but ones its dead, its dead
How was the battery capacity (run time for the drill) after doing this? That's a pretty important question that was left unanswered.
Especially considering how weak it sounded. I question whether it could still spin with resistance? Also, how does this affect the good battery your draining life from?
@@tomm8025 it wont affect it. I use the samw technique for car batteries that are too low for a car charger to charge. Have found a number of "dead" batteries tossed that were actually good that way.
It depends. I had one battery that did not have much juice even after doing this and I have another battery I still use for my drill and this video was made a year ago.
It's not great son, I thought that was obvious.
Q
After you revived the battery and then used it till it died again, was you able to plug it straight in to the charger and continue using it as normal? Ive Read a few comments now and it looks like for some people it has been a case of having the use a reviving method over and over.
Try not to let it get 100% dead or you will have to do it again.
Also when you leave the battery on the tool it dies completely so once you use it unplug it from the tool and charge again.
You are awesome thank you
Still seemed weak after the so-called charge!
Tried this and the rejuvenated battery left it on the charger for 4 hours...worked for about two minutes then went dead...a lot of work for two minutes of work...over night it went completely dead
Why such loud music?
Thanks mate. this is youtube knowledge at it's finest
It's not going to last. It you pull the case apart you'll find a pack of D size batteries inside all soldered together to make you the appropriate voltage. One of those cells has gone bad. You can buy them on line and solder in a new one. One other option is to completely remove the battery pack from inside, drill a small hole in the side of the case and run a pair of 10 or 12 ga wires through and attach them to the contacts inside. Now attach a pair of cable claps on the other ends , attach them to a 12v car battery and now you have a working drill for any remote areas.
Since you have to drag a charger around that needs AC power ... Wouldn't that be the same as having a conventional ( old school ) corded drill ?
@@riderinsanjose337 ???? not sure what your point is. My comment was for being able to use a portable drill somewhere remote if you had your vehicle nearby.
@@MonacoMike
Okay. I retract the AC charger statement. Non the less, you still going to have a cord from your car battery to whatever it is you are powering.
You might be better off just buying a new battery.
@@riderinsanjose337 Most people discard their old batteries. What I'm saying is that they can be rebuilt or you can modify one to connect to your vehicle battery as an emergency back-up when you have nothing else left. Dewalt batteries have a relatively short life span.
@@MonacoMike
Knowing what you just mentioned, I think it would be bad planning not to have a backup battery on your person.
Or at least readily available.
I appreciate your replies.
Have a great evening.
I'm disappointed. I thought I was going to learn how to replace the NiCad cells inside the case. I've done that with a couple Dremel packs and they work better than new with high quality AA cells.
My 20 years+ old Bosch drill/driver's battery (NiCd) packed up.
I sawed off the base of the pack and found 6 cells inside, wired in series.
Removed them with side cutters, making a drawing of where they went, polarity, etc.
Ordered 6 modern NiMH cells, with twice the Ah capacity and higher current capability (more power). They arrived fully charged in 48 hours.
Soldered them all back into the case (the cells have solder tags) and fastened them with the hot melt glue gun. Then glued the base back with Superglue, and painted over the cut to conceal the repair.
The old charger works fine with the new battery, you just have to time the charge using NiMH, and not leave it on permanently.
The repair saved me over £50, and my old Bosch drill works better than new with its upgrade!
Where did you that info
Thanks
@@maunalapier4939 No info source. I just took the packs apart noting where the jumpers are and soldered wires to the new cells in the same pattern. It's a relatively simple operation.
Thanks I appreciate it
The charger says very clearly Nicad, meaning its not based on lithium ion. You can safely put a 12V car battery to force charge it.
Just because you see a spark at initial (flat 18V Lithium Ion battery to 13.8V fully charged vehicle battery) connection, does NOT mean the current is flowing in the desired direction. {Using a 1N5408 in series could help solve this}
A 24V truck battery is closer to the desired 21.6V charging voltage required for the 18V rechargeable drill battery. ✔
I tried several different methods of "reviving" batteries. Listen to me...forget this crap. Save yourself hours of frustration and just go buy yourself a new battery pack and be done with it. Or not. But when you're done screwing around with this, don't be embarrassed to come back here and acknowledge your mistake. You're in good company.
This is good advice if you can find another battery like the one that is no good anymore. I bought a battery-operated chainsaw and I only bought one battery now the chainsaw has been discontinued at Harbor Freight and know where online can I find another battery so now my chainsaw is no good unless I buy another chainsaw
Unfortunatly, the drill i use don't have battery problems [batt's work fine], the cases on them have been bashed and smashed around through constant use so they are held together with tape :)
Why not make yourself a heavy set of lead cables instead of the scissors?
Yea, I was thinking wired alligator clips...
Your problem isn't only dead batteries,,,it's Dewalt tools,,aka bulky yellow junk....
Only Milwaukee tools and nothing else...
My batteries will charge they just don't last long. I'm old school and hate battery devices so I bought a Honda 2200 generator for the back of my truck. My "battery" weighs about 50 pounds, fits every tool I own with more than enough power, and never needs charging. It even fits the house if the power goes out. That's what I call a battery!
FYI if you have a smaller generator that you use frequently it will start when you need it. I have a large generator that seldom gets started that may require work. Better to have a small one that starts than a large one that's sketchy.
This doesn't convince that the first dead battery has been rehabbed successfully. From the 1st result where the charger indicated "replace" to showing "fully charged" after only 5 min of additional scissor jumping, doesn't make sense, and your test showed it would drive the drill slowly. Do you have a follow-up video that verifies that the 1st dead pack ultimately accepted a full charge? Label me very curious but unconvinced yet. Thanks for the video though.
Dewalt batteries policy is a bitch, every drill has a different battery and fitting also their pricing policy forces the user to buy a new bloody drill. Best to consider Ryobi products as an alternative drill supplier, they have the same battery format for all of their products. Everything works on the same format, great for the customer and the environment. Ryobi were Japanese originally but now owned by Bunnington. Hope this helps.
kinda crazy. this might help if you do small things, but the problems with these batteries is not IF they charge - the problem is they charge, but only last for 10 minutes! Biggest problem is the black and yellow label! Get Millwaukees!
This trick is a hit and miss , much depends on how crystallized a cell or cells in the battery really are, but in no instance will it be the equal of an uncrystallized battery. I revived a couple batteries that had dropped to ZERO volts , initially the chargers would reject them without attempting to charge them but after tricking the chargers they began charging again .Still after all they will not charge past 15 volts no matter how many times this kind of trick is used, besides there is another way of doing this, much safer , and simpler without jumpers or scissors that avoids a possible short, and that is to plug the charger into a power strip with a an on off switch. Why it works as described below takes too long to explain and without knowing principles of charging the explanation will not be understood by many , so why waste the words ? The easier way is to plug the battery into the charger and then cycle the power strip switch on /off allowing the led on the charger to stay on only for a moment when it recognizes a load and then off again . After about 5 to 8 cycles the charger will go in to charge mode and the batteries will charge , but never to their original 21 volts surface charge when they were fresh , and they will not have the MAH that they once did . A Volt meter will tell you exactly what you have really accomplished , the battery will power the drill for a short duration under load but will fall flat again .
This video looses all credibility because the battery he uses is brand new. My batteries after a month certainly show they have been through visible use. What ever type of work this chap does it is not in a shop or on a job site.
Don't you think that this is similar to 'kicking a dead horse'?
Ni Cad batteries are obsolete,, so why waste your time? Heck, even Lithium ion batteries are being replaced these days too! Look for the newest polymer batteries now.
It's all a part of the 'through away' world we live in. Tool makers don't want you to have a tool for years and years,.... they'll go out of business if they made the perfect battery powered tool, wouldn't they?
One of the worst things that has been done to Ni Cad powered tools is to keep them on charge,.. use them 'till flat then charge them fully. Too late for these shown here.
Fake. When batteries go bad, they are done. You have a pack of some good and some bad. Only way to fix is replace the bad ones or replace all. Its cheaper to buy aftermarket complete pack for 15 dallors.
I'm guessing you should get back to sewing instead.
I use an ATI Radeon cooler to fully discharge it, after the drill stops working. I already experienced improvement. Charging time is 5h fir all cheap devices.
Yes the battery has charged but when placed in the drill and pressing the trigger it shows very little charge and I doubt it will run for more than 5 minutes. Better to just suck it up and buy replacement batteries. For DIY purposes you can buy very cheap Chinese copies but wouldn't recommend them for professional trade use.
Ooooo kay... Hope no one really takes this seriously. Scissors for jump leads??? I guess you use what you have handy but as mentioned below this doesn't "Fix" the battery
The problem is the NiCad technology. It's not very good. Lithium is much better. I ditched all of my cordless NiCad tools and replaced them with Lithium. I would suggest you do the same.
This absolutely works. I used a wire from terminal to terminal instead of scissors, but this definitely works.
This is so common with these $200.00 batteries. Solution, go to Home Depot, buy a new one, take the recipe and the old one back and return it. Sounds shady, yes, but to spend that kind of money on a battery that doesn't last a year? Screw'em.
before you ruin your wifes new scissors you may try this to restore batt to take a charge 2 jumper clip leads i connect these lesds temp. to my golf (36 volts ) plus to plus just tap the dead batt. plus and minus may see tiny sparks no problem 2-3 clicks shuld do it now place batt on charger it should work now if repeat click it alittle longer no adverse effects and save buying a batt.
I purchased new pair from Amazon sent two one was bad out of the box .. this method did not work either... Alsop Amazon replaced order same thing one good one one bad one second replacement order complaind they gave me my money back said keep both orders reimbursed
I was able to charge after the jumper to a good battery. But It had no capacity. Went dead after a short time of using it.
Areed. Doesn't last as long. About 85% of what it was when new. But I'll accept this fix over buying a new battery!
Even if the fix is temp... Better than drill bit swapping. Having 2 drill is better than 1. 😁
Thank you sir
Not only is this not going to last very long, don't buy cheap reconditioned batteries either, because they're 'reconditioned' by some other bloke doing exactly what this bloke does.... and they don't last either.
what happens to batteries over time small hair like shorts grow in your batteries . a surge of power or quick pulses burn the .... shorts out and your battery works again some times its too far gone . A great way to exstend battery life is to run them dead or very close to it ,then when charged put on drill and spin for 3 seconds then put the charged battery into storage spot. leaving on charger is not good for the battery .tried to exsplain it simple terms . thanks dog
I have one of these batteries….it shows fully charged on charger…I plug it into device n nothing happens…it shows flat…what gives?
Can't believe I wasted my time watching this
I have a question I bought a battery operated chainsaw Harbor Freight in for some stupid reason I opted to just get one battery at the time they now have discontinued this chainsaw and I can't find the battery anywhere online so my question is does it have to be the same type of battery to use to do this or can I use another battery let's say a DeWalt battery and try to charge this battery with it? I still have the charger to for the battery of speaking of which I could continue to charge the battery with after trying this technique
well newer drill doesn't necessarily mean better because newer tools are most often made cheaper
Totally useless. The battery is so weak. won't even drill a single hole. Yes it spins but you just wasted all that time to see a drill spin. Time is the most valuable thing on this earth and I want my 7 minutes back
Deben los fabricantes hacer mejor el producto para no regalar la plata productos caros y malos mejor los chinos q son baratos
Wow so now I need another battery to fix my dead one? Why not just go buy one to replace the dead one in that case! This only works if you have 2 batteries.
Used alligator clips and nothing even after leaving for almost an hour
Looks like a good way to blow up a battery or start a house fire. What is your health worth? What is your eye-sight worth? What is your home worth? Just buy a new freaking battery and be done with it . . . . . .
Dude! Send me your address and I'll drop by Harbor Freight and get you a couple of jumper cables and send them to you!
I've just had this problem, didn't have 2 sets of sisors so just used two bits of wie, and it worked , cheers
The so called revived battery sounds very weak, just listen and you hear it saying "I'm dead, let me go."
When he was about to use the scissor to touch the 2 last prong, I was waiting kaboooom edit.
Say that you have two like you have and one from a Snap-On one that is good now how do you tell which is which one and how are you connecting them ?.
Mine will charge but only last a couple of minutes.
If your battery is truly worn out this won't help. All this does is allow the smart charger to recognize it.
Thanks just discovered your video today. I have several batteries in my garage that seem dead . I plan to try connecting with between batteries with jump wires with alligator clips
I just use an extention cord with my battery-free drill, it has worked great for over 30-years. lol. just kidding, enjoyable video.
9
You're just amazing after I watched it I didn't but you said and it worked I am so thankful hope we never lose you would you do such a beautiful job saving people money thank you so much again
Ain't that the truth, more powerful and never goes dead right before the end of a project. My "120v" DeWalt drill is over 20 years old and it will still turn you around if you hang it up. I've tried and tried to wear it out and doubt that I have even used $5 worth of electricity over the years. Compare that to $100 batteries.
I have spent months studying battery repairing and discovered an awesome resource at Magic Mender Wizard (check it out on google)
The charger will not charge a battery that is totally drained. If you hot wire it the battery will take a charge but it will not hold it very long and it will soon be dead again.
Is there something you could do to a car battery don't you know car batteries last about 3 years on the average and they all know that that's why they only give you a two or three year guarantee because they know that
These batteries comprise of separate cells when they it is because of a dry solder joint if you don’t think this is dismantle one and see for yourself
thanks
Scissors replaced with clips, or !?..might be safer, or less janky!!
Thanks
Plus it's being a left-handed video it's really irritating you have to do everything with your left hand
Great tip..better than some of the complicated ones I've seen. I've got two sets of scissors, just not one charged battery to jump it off of :( 3 uncharged drills, including one Makita not from a power pack 🤪
Thank you! That worked for me too? Had Dewalt Lithium ion batteries. One of them wouldn't even register on the charger? Two min scissor technique with my other battery worked!
Suggestion: If you turn the phone horizontally before pressing "record" you'll get more in & the video will be easier to watch. Wide-screen instead of keyhole.
Yeah isn't technology great!
I agree. I'm tired of turning my monitor up on end to watch videos like this.
You'd think smart phone manufacturers would disable recording in portrait mode. Very annoying when watching a news clip on TV and the video cuts off the left and right 2/3's of the screen.
I just got a 24volt kobalt drill set and I am charging it up now and it's not charging up
That is fine. Those dead batteries may recharge but the usually do not stay charged after a couple of minutes use
Instead of scissors couldn't I just design some terminals and wire to make wire leads for this"?
how can i recharge the battery on my hand held vacuum cleaner that won't recharge? Thanks
Sounds like your battery is shot ,after all that ,it runs slow.weak battery ,replace it.
its a good video for that problem. what if the batteries you have DO charge but wont drill 2-3 holes before the die and need charging again. also, you should really invest in (or make) a couple sets of jumper wires. just saying
These little batteries can cost as much as a car battery and the same with their charger vs a car battery charger with boost start!!!
I can’t say for sure but I think you put a ‘surface’ charge of the plates. Not sure if you’re gonna bring it up to 100% capable. How about opening the pack & replacing the bad cell(s)? Actually Ni Cads are old technology. Maybe time to upgrade to Lithium
Yes never gets to 100%. I have been able to use it for my drill as it works good for screws but not strong enough for my jigsaw.
@@Doggmatic71 when you consider they charge almost the same for a new drill with new batteries it doesn’t pay to replace battery packs
@@njjeff201 that's what I did. I keep this drill and batteries at my cottage and bought a new one for home.
@@Doggmatic71 my Dewalt batteries are Nicad which is old. I prefer Lithium. Not sure what the next generation of batteries are
@@njjeff201 No kidding. The cheapest way to get nicad batteries is to buy a new tool and throw it away and keep the battery....
How would you charge the battery if you only had one battery that was dead how would you charge it up
What if both batteries are dead? Can you use a car battery charger to part-charge a cordless drill 18V battery?
Don't say the word "so" unnecessarily in every sentence you speak.
You might want to invest in a multimeter and a couple of pairs of alligator clips.