LiFePO4 Battery Management Systems (BMS)

 If you want to know how to build your own battery, check out this page: Click Here
If you need raw LiFePO4 Cells: Click Here
​(I make a commission for purchases made through the links below)

12v 100A BMS w/ Low temp Charging Protection!!

So happy to find this. I have been testing BMS for about a month and many of them failed/were hard or impossible to program/heated up excessively etc. 

Then I found this BMS. It is used in medical devices and it's top quality. I tested the low temp charging protection, over current protection and voltage cut offs and it passed all of my tests.

What you need to know when using it:
  1. You need to program it but it takes seconds and you use your phone and bluetooth to do it. DO NOT use the app available on this BMS's website. You need to use the app listed below (download it) and install it on your phone. Then you can connect to the bms and change the BMS parameters. Scroll to the "low temp cut off" setting, and set it to 2 degrees Celsius, and you are done. Be sure to save the settings.
  2. Next problem is if you plan to use this bms with large currents, you need to add your own wires. I actually pushed 100A with the wires included, but they were warm. It is best practice to add more wires or use a nice thick copper wire.
And that's pretty much it. You will love it. It connects to the bluetooth instantly and its easy to program how you wish. 

Click Here for Amazon Source (usually in stock)

You can buy this BMS for a cheaper price than the listing above, from Aliexpress, but it will take a few weeks to arrive. Click here

​​And below is the APK file (to install on your android device) so you can program the low temp cut off settings:
xiaoxiang-protection-enterprise__1_.apk
File Size: 4385 kb
File Type: apk
Download File

8-16s LiFePO4 BMS that works really well

I have tested this one for months and it works really well. Has low temp cut off and lots of other features. You can program pretty much every feature of this bms, but the hardest part is to "activate" it. There is a method by exposing it to a low voltage, but the easiest way is to stick a charger on the bms output lead (just add a battery charger like you normally would) and it will activate instantly. After that, you are set! 

Also, the bluetooth connection password is 1234

Click Here to check it out on ebay (sponsored link)

Daly BMS (No Low Temp cut off, but easy to install)

These work great as a bms, but your charging sources need a low temp cut off. Learn more about how to use these by clicking here

This is still my go-to BMS. I don't care for data logging or changing settings on my BMS, so the Daly works great. I am running them in parallel in my shed at the moment without an issue. Very simple and works well!

​Click Here for a 12v, 100A Daly BMS

Click Here for a 24v, 80-100A Daly BMS

Click Here for 48v, 80-200A Daly BMS