BMSs in series?

[tilroh]

Hi, I’m so happy I found this forum. I didn’t know how much I didn’t know.

I plan on powering a small boat with a 35A / 24v fixed pod motor using 8, 280ah LifePO4s.

The cells have to be in 2 seperate packs (4s 12v)

Should I put a 4s BMS in each pack or use one 8s BMS which will require lengthening the sensor cables and installing plugs/sockets.

I’ve seen here, that there be issues using two 4s 12v packs in series?

Are some BMSs more suitable for series connections that others?

Thanks, Mack in Brisbane Aus

 

[Diysolar123]

if the device is a 24v device and you are buying 8cells I would really recommend you go with an 8s BMS, everything will just be "easier"...
Nothing wrong with increasing the length of the BMS balance leads, get some nice 20-22awg silicone wire and marine grade connectors (watertight crimp version) and you are good to go.