20A Low Cut Off Battery Protection Board
ฝัง
- เผยแพร่เมื่อ 7 เม.ย. 2021
- * update 3-5-23 - I have a video about adding a latching circuit after many request.... • Low Voltage Cut Off La...
In this video we take a look at this 20A battery protection board. It has taken a while to get, but I mentioned this 20A board in the video of the 30A protection board (with my EGO Batteries running my 120V AC tools). I wanted to share this simpler and smaller board as a option for smaller projects with lithium packs to protect from over discharge. The voltage range is great for any of the pack I own honestly, from 12V ,20V to 56V. Hope you find this video helpful and thanks for watching!
eBay Link to 20A Battery Under Voltage Control Over-discharge Protection Module
ebay.us/uuI78T
eBay Link to 30A Battery Under Voltage Control Over-discharge Protection Module
ebay.us/8Hsfda
Amazon Link to 20A 6-60V LVCO Board if needed:
amzn.to/3SNDF8V
Amazon Link to ICStation 30A 6-60V LVCO Board if needed:
amzn.to/3yhafXn
Amazon Link to 30A 10-60V LVCO with panel mount if needed:
amzn.to/3KUZtNR
Amazon Link to 48V 40A Relay if needed:
amzn.to/3KUuWzX
Amazon Link to push button switch if needed:
amzn.to/3ZkVSNu
Amazon Link to Drok Battery meter with alarm if needed:
amzn.to/3L29JUD
Amazon Link to battery meter with alarm if needed:
amzn.to/3mlKlPj
Amazon Link to similar 24VDC Contactor as shown in video if needed:
amzn.to/41KcUX4
amzn.to/3JeVQkN
Amazon Link to WANPTEK 0-60V 5A Power supply if needed:
amzn.to/3EZegmT
Amazon Affiliate links to some of my favorite Tools/Items if interested:
Any links you click on helps support the Channel and I greatly appreciate it!
DeWalt Cordless Gyroscopic Screwdriver if needed: amzn.to/3Eevk8f
TOMLOV DM202 MAX Microscope if needed: amzn.to/3Uy0RIF
Cheap Spot Welder Board if needed: amzn.to/3WcRwWA
200MHZ Rigol DS1202Z-E scope if needed: amzn.to/35UVTLI
Weller 200W Iron if needed: amzn.to/30nzhT2
Hakko 888D Iron if needed: amzn.to/36TDWyv
ProStormer Hot Air Station if needed: amzn.to/3XIiKEY
Desoldering Gun if Needed: amzn.to/2SOTVIM
Extra Long Security bits if needed: amzn.to/3KVQNGQ
0-60V 0-5A Power Supply if needed: amzn.to/4158YzL
Similar to Drok DC-DC Converter if needed: amzn.to/3eUJZYk
OFLA Locking Blade knife if needed: amzn.to/3BxMbSO
Pair of 3S 5.2Ah 60C LiPo batteries with XT-60 Connectors if needed: amzn.to/3UAl40e
WD-40 Contact Cleaner (Plastic Safe): amzn.to/2Yjo6e5
FlirOne USB C if needed: amzn.to/36VX1jn
Rigol DS1102E Scope if needed: amzn.to/35UVLvI
Atlas ESR-70 if needed: amzn.to/2QR1z4W
150W Load Tester if needed: amzn.to/30i8sn8
M12 Cordless Soldering Iron if needed: amzn.to/35XiFCp
Board Holder if needed: amzn.to/3881akA
Flexible hose arms for helping hands if needed: amzn.to/3KSH6c7
Northridge Fix Affiliate Links. Any purchase you make with below links helps support the channel. Thanks for your support!
NF AMTECH NC-559-V2 Flux 10mL if needed:
northridgefix.com/product/amt...
NF Low Melt Solder PK of 6 sticks if needed:
northridgefix.com/product/low...
NF Premium Desolder Braid Wick if needed:
northridgefix.com/product/pre...
NF Dual Head ESD Safe Hard Cleaning Brush if needed:
northridgefix.com/product/dua...
NF Mechanic Tweezers if needed:
northridgefix.com/product/mec...
Solder wire 100g 60/40 if needed:
northridgefix.com/product/bes...
NF.Mini Soldering Pen if needed:
northridgefix.com/product/por...
NF V2.3 Microscope if needed:
northridgefix.com/product/mic...
NF Universal Board Holder if needed:
northridgefix.com/product/uni...
NF Adjustable Clamp Arm Stand for camera if needed:
northridgefix.com/product/adj...
NF Atten ST-862D Hot Air Station if needed:
northridgefix.com/product/att...
NF Grinding Pen with 7 tips if needed:
northridgefix.com/product/gri... - วิทยาศาสตร์และเทคโนโลยี
![[006] Do Makita LXT batteries have low-voltage protection?](http://i.ytimg.com/vi/r1tQwoaCdBA/mqdefault.jpg)
Good info. Will check out your latching circuit next.
Thank you so much Sir. This is the most informative video on those Cut Off Battery Protection Boards, also known as XH-M609. This video also inspired me the idea to use a separate high current relay driven by this little board in order to safely handle more current.
Glad you found it helpful and thanks for your comment!
@@ThriftyToolShed One more question though: If a relay is marked 48V/80A, does this mean that I can drive its coil by a 48V to control a 48 voltage on its contact as well? In fact, I have a 48V battery bank. Thanks
@@chafik1973 usually you will see a relay have a coil voltage rating, a maximum voltage switching rating and of course the current rating it can switch. You have to find out if the coil and input is rated for 48v. Many times for example a 12V coil can switch much higher voltages.
That's a good idea for large voltage battery systems. Thanks.
I need one of those!
Very informative video thanks
Hey, I've been searching for a while and couldn't find a straight answer. What is this board's consumption ? Especially when it's already below the setpoint and decoupled the output. I can see that its 7 Digit display is still active and I'm wondering at what rate this circuit will discharge further the batteries.
Good pcb. Good explain.
Thank you 🙏 that explains allot 😅
Man , you are just filling my electronic hobby needs this weekend 😂. Not sure why it took TH-cam algorithm so long to put your great videos in my feed but better late than never.
I have these exact model low voltage components, do I need to run one for each battery? I am using 2 -20 volt batteries wired in parallel in my girls power wheels. I currently have only 1 low voltage protection unit inline with the 2 batteries before the motor control unit. It's working but it's shutting off fairly quickly , like 2 minutes of use and then after 5 seconds it turns back on. Currently set at 17.4 shut off and 1 volt difference. I wasn't sure if I should run 2, figure it may get wonky with 2 batteries discharging possibly at different rates. I did test my batteries and they were identical voltage at the start and after use. Obviously my girls arent thrilled with the 10 second random pauses.
Thanks for these tutorials. I'll be referring to lots of your videos I'm sure over the next year. We've got lots of science projects in our house!
Thanks for your kind comment! I want to mention first if you put packs in parallel to make sure they are the same capacity and charged to the same charge level before connecting in parallel. (Just wanted to mention that) I would say it's fine to have them on one protection board if they are connected in parallel. I would set the cut off voltage maybe a little bit lower so it doesn't trigger so fast when pulling the voltage down on high current demands. I would experiment with going as low as 14V with a 5S pack since it is still above 2.7V per cell. another thing is making sure heavy enough gauge wire is feeding the board and load so it will not pick up the voltage drop and possibly shut down prematurely. I am now experimenting with a controller that has built in cut off protection. It's pretty cool. Hope it's helps. Have fun!
amzn.to/3TgNa2d
@@ThriftyToolShed Thank you very much I appreciate the advice. I did check the voltage before connecting them and they are the same batteries I bought them as a kid probably 5 years ago so they're both equally used and abused. They're only the 1.5 amp hour so they don't last very long even in parallel. Think I'm going to buy two six amp hours. Though I was thinking of buying one of the battery spot welders and a roll of the nickel and then 3D printing my cell connectors. I have tons of the 18650 batteries I would like to make a big pack with. Oh thanks to your other video I saw where you repaired one of the battery packs replacing a cell I was able to do that yesterday there was one of the batteries that was only registered in 1.5 volts when the other ones were registering 4. 5 to 7 minutes of work and I had a working dewalt battery pack again thank you very much.
@TRUMP_WAS_RIGHT_ABOUT_EVRYTHNG
Sounds like a fun project building the large pack. Good job on the repair!
See how to set up the XH-M609 module here: th-cam.com/video/d9RD0Iao58A/w-d-xo.html . There are four settings using the two buttons - cutout, offset, calibration and time delay.
Thanks! got a free hot wheel with the conversion for 20v and I didnt know what this module was for. This made perfect sense why one battery worked and another didnt. The link you posted help me set up the module better.
I appreciate your hard work making these videos. I have one of these boards and its not working. When I hook up the power the led flashes messy for one second then goes dead. They told me to hit a button fast while the light is flashing to get it to set up but it wont even flash.
I ordered mine from amazon with no instructions, can I input from a solar panel or will it only handle 12 volts? I am in Canada so my cost for this board is almost forty dollars.
What I am looking for is a module that I can input 12/24 volts DC and output 12 volt. Any help will be much appreciated.
Well this board will allow 12V or 24V input, but will not change voltage level. 12v in 12v out. 24v in 24v out. It is just a protection board that shuts off load before pulling down to low to protect the battery typically. Low voltage cut off that you set level for. Hope it helps.
Hello, we can change the relay to withstand more amperes, for example, to put a 100 amp relay with the same circuit
Yes! It can control any higher current relay!
I have one of these I connected for my son's Power Wheels. I'm using my 20/18v DeWalt batteries and at first it was reading the voltage from the battery correctly. It was showing anywhere between 18-20v. However, after a few uses I noticed that the display on the low cut-off protection board jumped all the way up to 99.9. I have a separate display device in the loop that also displays the voltage, and it is showing at the correct voltage amount. Any idea why the protection board default display is at 99.9? The cut-off value is set to 16v and the difference value is set to 1.
The only 2 ways I can think of for the voltage reading to be wrong is...
#1. The voltage calibration has been accidentally adjusted by pressing the long press of the + button and calibrating?
#2. The board is possibly faulty.
I have used several of these and have not had one show 99.9V yet, so I am not 100% sure. I am just throwing out these suggestions in case they help. I have also used a couple newer style boards that are 60V 30A and 40A respectively. It is more set-up to these l, but they work great and I will possibly share a video of it in the future.
amzn.to/3TCwReZ
Or
amzn.to/3TxwaUt
Best of luck to ya!
@@ThriftyToolShed I really appreciate the prompt response! I'll definitely be trying #1 above this evening. Thank you for the URLs as well for similar products!
Do you loose the set values when you disconnect the board from the power source?
No, the settings are stored.
Hi thx for video . Regarding 20 amps is that mean i cant use it in case i withdraw more 20 amps from big battery
No, unfortunately not. The relay is rated for 20A. It will not regulate load in any way. Sorry for the confusion. Just a 20A relay really.
@@ThriftyToolShed thank you so much 🙏
Can this cut out at 12 volts and then kick back on at 13.8 volts so that way you can have deep cycle batteries can only get as low as 20% and when the panels charge to 100 it can kick back on to get proper cycle
From my experience it should not have any issues with that. I am also working with a different module at the moment that has many ways to set up as well. May be worth looking at, but I don't have much experience with it yet to know if it's much better or not. The power usage on stand by is much better for sure.
amzn.to/48cJbIr
Ive heard that battery operated power tools, such as a Milwaukee 18v drill battery, for reference, has a minimum battery voltage of around something like 16.2, according to a project i saw on TH-cam using one to power LED lights in an enclosed trailer, and if you go below whatever the minimum is, you can damage the battery, but to be honest, I'm not sure if I understand that... how is it that it'll damage your batteries? And what's more, should a circuit running off of a 12v car battery (or deep cycle), or a 12v vexilar/kayak battery, or even a lawn mower battery, have a low voltage cutoff circuit in there somewhere, and if it's not needed, then what's the difference? Just the fact that you're using special battery requiring a special charger?
Yes lithium ion batteries have a low voltage minimum meaning they will be damaged if allowed to drop below a minimum level. This is usually around 2.5V on many cells data sheet. Many battery packs cut out at around 3V per cell for protection. Lithium cells also should never be charged above 4.2V per cell. Most packs stop charging at around 4V for protection. Lithium cells are good, but they have known issues with overcharging and over discharging. This is why you always see circuit boards in battery packs. This is different from lead acid batteries which are much more tolerant to these issues. It does still affect them, but not as drastic for sure.
@@ThriftyToolShed thank you very much!!! Most of what I can actually readily find by searching for this question on youtube, without knowing exactly what to search for, either lacks information on it at all, or is woefully short on information that it DOES give. I am glad to know more, finally. That definition you gave, sounds kinda like why my used car batteries don't last long especially when(sometimes) running then down, and, not using them very often besides... Not sure if I explained what I feel properly, but there you go... You definitely have my thanks, as that's all I can currently afford to give
Your little relay black box in your board shows it rated for 14vDC, I’ve heard of those failing when using a 20v power tool battery to increase power of kids power wheels, how does that no mess up when you’re putting more than 14v to it.
I typically use it to control a high current relay or solenoid that is rated for heavy DC loads. These will not do well with high DC loads alone. DC is rough on contacts. So yes at 20A it would not last long if going over 14VDC. Honestly the power wheels over voltage to 20V is not good for the motors at all and it's most likely way over 20A also. Maybe into the hundreds at start up. I would not even try that thinking about all the start and stop the kids put on that little power wheels, I would imagine it would smoke it in no time!
What type of relay could we add to this LVC so that when it trips all battery power is disconnected from the LVC as well to not overdischarge if left alone? Not just the load.
Ok, so this design is for you to see the voltage drop and it shuts down and requires you to take action to remove it and recharge it. So you could use the same setup as I showed as an example here in the video, but wire it differently. You would need to have the output of the LVCO module also power itself and the load. The trick is to have the battery positive going to a momontary seal in push button switch to the relay coil that you would have to hold to activate. It may take a few seconds to boot up and verify the voltage level is good then you can release the push button and all is powered from the output of the module. Once it drops down below cut-off setpoint it all drops out.
@@ThriftyToolShed From a hobbyist and student of electrical engineering - I would cry from happiness if you could demonstrate this - as you would literally help me understand this exact solution I've been searching for everywhere! This module is great, but without fully cutting the circuit when voltage is low my batteries are often overdischarged. The additional relay and circuit as you described is the ideal solution, and I'm just trying to wrap my mind around how to creating a self-driven flow from battery positive can momentarily latch the circuit open until it is disconnected.
I have received a good bit of interest in this and I will put together a video on this. It will take a little bit of time to get caught up on editing videos I have scheduled already. Hopefully in March I will put this together. Thanks for your comment!
I now have a video up about the LVCO with a latching circuit. I hope it is helpful.
th-cam.com/video/2pSov8jIo_Y/w-d-xo.html
I don't understand why they didn't put a switch on the board to shut off the led readout. The whole point is to protect a battery from discharging too far but it will literally keep discharging your battery by itself.
Very true. So many people asked about this that I followed up this video with a latching type circuit with a relay to drop out the complete circuit. It has its issues also, but at least the push button can latch the circuit as well as be used for a bypass temporarily if needed.
I bought this plate to protect my daughter's car battery from discharging. However, I noticed that the speed of the car was limited, as the board limited the output current to 2amp, and by connecting directly to the battery the car consumes 25amp depending on the situation. How can I protect the battery without limiting the current?
Well it is only a relay contact and rated for 20A. There should not be any current limit. It may have a faulty contact or burnt contacts if over 20A has been pulled across it. It is some 30A boards available as well. Also if this board is connected at all times it will drain a battery also. I do have a video showing a latching circuit with this so it will drop out completely if voltage drops to cut off voltage.
@@ThriftyToolShed Could you tell me the code for the board that would support 30amp? I did a search and couldn't find it. Also, is the video you mentioned the one in the description update here?
@CarlosSantos-vt9gb
Yes, it's the one mentioned as an update. I also have a link below in that video for the 30A board as well. The Amazon link is still up to date.
Can this controller handle a 15 t0 20 ampere load output?
Well, it's rated for 20A and the relay shows 20A rating, but it is also a 30VDC rating so if you use it at higher voltage like up to 60V it may not hold up. Many viewers have pointing out that it's not a 60VDC rated relay. Truth is it is seemingly impossible to find a relay small or affordable that has a 60VDC rating. I also share some boards with the 30A relays if you need higher current capabilities.
Thks & cool accent
Sir please explain xhm604 pcb
You want me to explain the setup of the board?
does it work with 100Amp 12v battery
Not really sure exactly what you are asking here. It works with 12V and if you use a 100AH rated battery that is fine. It will Not handle 100A if that is what you are asking. Rating is 20A as mentioned in video.