JK (JiKong) BMS - 4S

[hwse]

Heltec seem to be pushing these as their "new 3S/ 4S Liion/LiFPO4 BMS" but can't see any mention of bluetooth or active balancing

13.35US $ |Heltec New 12v Bms 3s 4s 100a 120a 160a 200a 240a Lipo/lifepo4 Battery Protection Board Energy Storage/car Start Up Bms - Battery Accessories & Charger Accessories - AliExpress

Smarter Shopping, Better Living! Aliexpress.com

www.aliexpress.com

There is a 240A version and is promoted for a "car startup battery"

Has anyone seen a new Jikong 4S smart BMS with bluetooth and active balancing? The closest still seems to be the 8S version with a step up power supply?

The link is not much of a BMs. 80 mA balance. Max charge current 15A!!!!

 

[clymber]

FWIW, I just finished building two 460Ah/4S packs using the JK-B2A8S20P powered by a small 12V to 24V boost converter.

Everything works well, including the LCD display:

 

[brucemunro]

New 4S (to 8S) 12V-24V JK BMS 200Amp with 2A Active Balancer now orderable on the Hankzor Aliexpress store site. US$118

Ordered mine, shipping to Australia by June 5th.
https://www.aliexpress.com/item/1005004220673099.html?spm=a2g0s.8937460.0.0.423e2e0eJoCZQy