Low Voltage and Over charge cut off protection for every Li-Ion battery using cheapy BMS for 1$

#ErCanEverything #Battery #Protection

🪫⚡🔋In this video I will show you how to trick a BMS from Aliexpress to work on any device without series Li-Ion connected batteries

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[KarelFiala]

Great job! I actually tested the same idea two months ago, but with a different BMS. I ordered the same BMS as you did to put into "production". I also used different resistors for R1 (lower) and R2 (higher) so that the BMS senses a higher/lower voltage on the first/second cell. This approach is useful for cutting off charging/discharging earlier and avoiding battery stress in low-current applications.

[RelakS__]

Lol? I have recently bought this circuit, but decided to use Parkside batteries instead of individual batteries. Now, I will be able to use it, I just have to buy resistors 👍

[markshou]

Excellent video with an elegant low-voltage cutoff solution! Question: if I want a different cutoff voltage (ex. 15v, 15.5v), do I just change the resistor values, and if so how do I calculate what resistor values I will need?

[mauricesteer]

Thankyou, this is the perfect solution for an upcoming project

[mrkieranmonk]

Two questions

1 - After the BMS cuts power to the load is it still drawing any power (no matter how small) from the battery (i.e. to monitor the voltage or other function)?
2 - Is there a way to adjust the cut off low voltage, I would like it a bit higher than the solution presented here to make sure the batteries are well protected and don't mind sacrificing a little run time for this?

Super helpful build and guide, thanks in advance

[อุ่นใจอาละวาด]

The video is very useful. I have tried following this and got results by trying to do it in 3 cells.
Is it possible to use the same 18650 BMS with a solar panel, for example using a 5-cell BMS with a 18 volt solar panel?
If you would like to help, please make a clip of this project next time. Thank you in advance.

[YuriyID]

Hi. Nice. its important use 3.3 kOhm or it can be other? Example 2 kOhm?

[DrJones]

Welchen Widerstand hast Du bei dem Parkside Verbraucher verlötet?

[ackermail]

Thank you for a great project. I am running to strange problems with this solution. I have same BMS board with resistors soldered on to it. I am using the regulated DC-DC converter (ZK-4KX) to imitate the battery voltage going down and H4 bulb as a load connected to P+/P- pins. Even when I decrease the input voltage to 10V the bulb is still on. Where might be the problem than?

[electronicbits]

Awesome trick! By this way we can fake BMS, and use as much cells as we want 🤩
Thanks for sharing this knowledge with us Brother ✌️

[lezbriddon]

BEWARE of using parkside batteries on other tools, all 20v parkside tools have a bms and cell balancing, BUT it does not test or prevent over discharge, if you over discharge a parkside battery, the protection chip in the battery will lock out the battery forever! it will not send 'handshake' to charger. its a safety feature of the bms IC to protect us from fire, not to increase company profit..
also recharging cells will not unlock it, I have tried many parkside boards etc as I built a full 50mph+ e-motorcycle from parkside cells.

[blzx]

I have a few of these. Will it work for 24v battery?

[mladenmanojlovic]

correct me if i'm wrong but if we put this in battery pack we will not by able to charge on original charger...need to put it inside the adapter or tool casing....no battery draineg

[nguyenanhduy]

Hello,
Thank you for your share. I have a question:
What kind of lamp? How it work?
Thank you.

[oweckayx]

Great job and video! I have already ordered via your referral link :-) Do you know the limit of maximum long term amperage? I intend to use this solution to keep Parkside battery safe on my sons electric motorcycle. (36V - 2x 18V 4ah dumb batteries or 2x 8ah 18V smart batteries (those may not need discharge protection due to limit setup in the application).

[keithcottrell]

I have an old Honda ct90 motorcycle with a 160cc kick start engine. I use a very small motorcycle battery and stator just to run a headlight, taillight, and blinker. All are LED and the point of the battery is to keep the volts constant otherwise lights flicker. Can I use this setup hooked up to my bikes voltage regulator and stator to charge a 12v DeWalt lithium battery? I tinker and can follow plans to build stuff but design and engineering are above my head. Can you help me if this is doable? Another reason I want to do this is that the drill batteries are cheaper and some are rated better than the current little acid battery I have now that needs replaced.

[PutinTeam]

Спасибо за ваш фильм! Поправьте если не понял, для предотвращения глубокого разряда достаточно припаять резисторы?

[amobenpro]

Thank you very much man for this great idea. Is it possible to make one for 12v charging circuit. I will really appreciate that if you could help me

[ibmezouar]

Awesome! I have been looking for such a device for a while. Do those resistors get hot?

[DjaniAgain]

Very useful and these modules are not expensive. For other voltages we probably need other modules 🤷
Have you tried resistors with other values?
Thanks for sharing Brother!