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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)

Overkill Solar 12v 4S 120A BMS
w/ Low temp Charging Protection!!

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I have been testing BMS for over a  year 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.

You will love it. It connects to the bluetooth instantly and its easy to program how you wish. 

Click here to buy from Overkill Solar (American distributor with customer support)

​​And below is the APK file (to install on your android device) so you can program the low temp cut off settings:

Version 2 firmware:

android_app_xiaoxiangbms_3.1.1015.apk
File Size: 5808 kb
File Type: apk
Download File

How To Wire It Up (Click Here For A PDF Manual)

Picture

Overkill Solar 24V 8S 100A
BMS w/ low temp charging protection

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Same BMS as above, but in an 8S 24V configuration! We have been waiting ages for this, and it is finally available.

Click here to purchase now

How to wire it up (click here for a PDF manual)

Picture

Overkill Solar 48V 16S 100A
BMS W/low temp charging Protection

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Finally here! Use this BMS to build a powerful 48V system.

Max output of 4,800W!! (48V X 100A) This BMS can handle a serious amount of power.

Click Here to purchase now

How To Wire It Up (Click Here For A PDF Manual)

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

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These work great as a bms, but your charging sources need a low temp cut off.

This is still my go-to BMS for quick projects. 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!

Some people do have problems with them. The new "smart" version seems to die easily. I would stick to the overkill BMS above. 

To activate a daly BMS, you must short out the P- and B- terminals. That will "wake it up". 

​Click Here to Purchase

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Prowse Publications LLC (www.mobile-solarpower.com) is a participant in the Amazon Services LLC Associates Program,
​an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com
I make a commission for sales made through affiliate links posted on this website
  • Home
  • DIY Solar Blueprints
    • Vehicle Mounted 12v Systems >
      • The Minimalist (great for small vans and cars)
      • The Classic 400 Watt (RV's, Vans, Buses)
      • 400 Watt w/ Alternator Charging
      • The Off Grid King (Power Anything!)
      • Ultra Sized Systems: Run an Air Conditioner
    • All-in-One 12/24/48V Packages
    • 48V Offgrid System Blueprint
    • Code Compliant 48V Offgrid System
    • Design Your Own Raw LiFePO4 System
    • DIY 24v Systems >
      • 2000 watt, 24v Solar System
      • 4000 watt, 24v Solar System
    • Grid-tie Systems
    • Other Packages >
      • Solar Trailer
      • Hand Cart Solar Power System
      • Minimalist on a Budget
      • Ground Mount Solar Array
      • DIY Beginner Friendly Solar Generator
      • 640Wh Milk Crate System
      • 12v Solar without a Battery
      • Pocket Solar Generator
      • Backpacking or Bicycle Tour Solar Package
      • Low Budget Package
      • Suitcase Solar Generator
      • Minivan Solar Power System
  • Solar Batteries
    • Lithium Batteries
    • 48V Server Rack LiFePO4
    • Raw LiFePO4 Cells
    • BMS
    • Sealed Lead Acid Batteries
  • Solar Components
    • 50-250W Solar Panels
    • 300W+ Solar Panels
    • Solar Panel Mounts
    • All-in-One 12/24/48V Packages
    • 48V All-in-one Buyer's Guide
    • Inverters
    • Solar Charge Controllers
    • Battery Chargers
    • Wire and Connectors
    • Fuses and Circuit Breakers
    • Battery Monitors
    • Battery Capacity Testers
    • Automatic Transfer Switches
    • Battery Isolators
    • Tools
    • 12v Fridges
    • Solar Friendly Air Conditioners
  • Plug-N-Play Systems
    • Full Size Systems
    • Ultra Portable Systems
    • How to connect Solar Panels to your Solar Generator
  • DIY Solar Book
  • Videos
    • Electricity for Dummies
    • Solar Power for First Timers
    • General Solar Education Videos
    • DIY LiFePO4 Video Series
    • Solar Wiring Configuration Diagrams
  • The Forum
  • Contact Me
  • Policies and Disclaimers