[SOLD] Energus Tiny BMS s516 v2.1 Unit and Spare

drdrs

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Jun 10, 2018
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One fully functioning Tiny BMS s516 v2.1 unit and one spare needing repair.

I've run these units at 150 battery amps peak for several months and they work very well.

Selling all parts with shipping to continental US for 120 USD.

Link to manufacturer description:
https://www.energusps.com/shop/product/tiny-bms-s516-150a-750a-36

Includes balance harness cable assemblies.
Includes thermistors and cable assembly and a UART to 0.1 pin header cable.
Units have after-market soldered screw terminals on charge and discharge pads.

Best feature for me is that the BMS has a well-documented communication protocol allowing for digital monitoring during charging or riding.
Here is the charging monitor software I use.
https://github.com/dsoto/Tiny-BMS-Monitor

The spare unit contains all the battle scars from my first battery build.
Spare has damaged temp sensor input port and damaged UART serial port.
Temp sensor damaged from overvoltage during assembly.
One of the JST connectors has deformed plastic from soldering a nearby component.
UART presumed damaged from ground loop issue during LVC.
The unit still works at 14s, but can't be configured using the Energus software tool since UART is damaged and no telemetry is available.

Both units and harnesses and cables:
2020-12-20 10.09.05.jpg

Completely functioning unit:
2021-04-20 06.23.24.jpg

Spare unit needing repair:
2021-04-20 06.23.42.jpg
 
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