16s BMS 100a for LifePo4 with 24″ 8ga Wires

(3 customer reviews)


  • Comes with 24 inch long 8ga wires soldered to the board as shown.
  • BMS For 16 cell, 48v volt Lithium-iron-phosphate DIY batteries
  • 100 amp continuous charge or discharge current
  • Low Temperature Charging cutoff at 0c
  • Fully programmable with IOS app, Android app, or Desktop app
  • User Manual: Click to Download the PDF user manual

In Stock, Ships within 5 Days

The high current wires will be hydraulically crimped into a single tinned copper lug on each side.

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For international orders, the price is calculated at checkout.


1 Bluetooth module is included with each BMS.

You may want to add a USB communication module

SKU: 16s100a8ga24 Categories: ,


User Manual: Click here to download the manual (PDF)

3D model: click and drag to rotate, or download the STEP file.

BMS For 16 cell, 48v volt Lithium-iron-phosphate DIY batteries.
100 amp continuous charge or discharge current.
Low Temperature Charging cutoff at 0c.
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.

If you choose to add crimped copper lugs, the high current wires will be hydraulically crimped into a single tinned copper lug on each side, and finished with heat shrink tubing.

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.
1. Bluetooth module to IOS app. IOS app is on the Apple app store. Overkill Solar Mobile App
2. Bluetooth module to Android app. (download this version, don’t get it from the play store)
3. USB module to PC/desktop application. This application is free


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.

Additional information

Weight 2.1 lbs
Dimensions 6 × 6 × 1 in
Wire Length

8ga 12" (standard), 8ga 24" (+$8), No Wires (-$14)

3 reviews for 16s BMS 100a for LifePo4 with 24″ 8ga Wires

  1. john

    I am quite new to DIY batteries, but having tried an aliexpress daly bms, this overkill 48v bms is packaged much more professionally. Main metric I use to prove the quality of this unit is the lack of voltage drop across BMS when checking total battery voltage. The daly bms read 9.6v for a 4 cell 12v DIY battery which is >13v when bypassing the daly bms. Overkill showed no loss at all. Bluetooth works great. Haven’t tried usb PC connection yet.

  2. Larry

    Just got my 16S! It fired up and worked great. Great Bluetooth communication. Some of the best quality I’ve seen from china. USA based Overkill provides the added detail that you will likely not get from overseas. The one page colorful instruction sheet gives you extended comfort that if you do something wrong, you’re not stuck with it. You just call customer support.

  3. Carl C (verified owner)

    Very pleased with this BMS!!! I have (5) of them, and they all work perfectly. My inverter developed a “DEAD SHORT” in the + – battery in/out and the BMS’s shut down the charge port and saved my battery packs from any damage. I will not use any other BMS.


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