Description
User Manual: Click here to download the manual (PDF)
BMS For 4 cell, 12v volt Lithium-iron-phosphate DIY batteries.
120 amp continuous charge or discharge current.
Low Temperature Charging cutoff at -1c.
The Apps allow you to monitor SOC (state of charge), Current, Voltage, cell balance, temperature, and more.
Bluetooth Module is included, Balance wires are included, USB module is an additional purchase.
Fully programmable.
Final assembly, testing and calibration is done in Naples, Florida. Units with 8 gauge wires and/or crimped lugs are assembled in Naples, FL. The BMS is manufactured in China.
To view or change Parameters, there are 3 ways to connect to the BMS. All 3 applications are free.
- iPhone App:Â Â Overkill Solar Mobile App
- Android App:Â Â Overkill Solar Mobile App
- USB module to PC/desktop application.
Click here for Software Downloads and Support Resources.
A great resource for general DIY power education is www.Mobile-Solarpower.com
FYI for experimenters: The BMS communicates with a 5v TTL UART at 9600 baud. It is directly compatible with Arduinos, etc.
We have written a new Arduino library for the BMSs, now available on the downloads page. The beta version allows you to read all the monitoring parameters and switch charge and discharge on/off. Future releases will have full read/write capability. A python library is also in the works.
Bob Nelson (verified owner) –
Love the bullet proofed BMS. Got my swag dejour of 100 small zip strips that I will use with my battery setup. Now to get an inline 150amp fuse for just incase. Will definitely be ordering again.
Came fast via priority mail and so far all is well.
Joseph Suchta –
I purchased four of these. They’ve worked great. Never had an issue.
David Gronek –
I purchased two of these two years ago. They work great and are pretty simple to install Follow the directions for setting them up and you’ll have no issues. Customer service was great. I had one question and they got back to me very quickly. Its really my go to app to monitor mybattery status.