New jk bms question

[gates59]

So I purchased 4 jk-b1a8s10p bms from different sellers. One of them for some reason had a part number jk-b1a8s10pr. What does the r stand for. Bms has extra connection on the bottom and came with extra cables. See pictures. What's it for.

 

[WorldwideDave]

Good question. Could be for heater, for temp sensor, for RS485, for a screen, for an on/off switch, and more. Maybe someone with this specific BMS will answer for you.
Just sounds like you have an R at the end of one of them.

Cable Set: This generally comprises several cables of varying lengths, including:
Balance Wires: Approximately 75 cm in length.
Temperature Sensor (NTC): Around 40 cm long.
Active Switch: Typically about 15 cm in length.
Heating Cable: Included only with BMS models equipped with heating functionality.
On/Off Switch: A switch used to control the power state of the BMS.

 

[robbob2112]

H is heat
C is can bus/rs485

If i had to guess it is rs232...could be wrong... there is a decoder ring on their website

Searched it

• H: Heating functionality
• C: CAN bus communication
• R: RS485 communication

 

[gates59]

That would make sense. Thanks.