So I am looking for a cheap BMS for a 18650 LiIon battery I will use for a fan..

[Dr. Dickie]

The battery is 4S 48P. I looked at the Daly BMS which is only $36. In reading the description I see:

"Over-charge over-discharge protection---18650 Li-ion battery pack will stop charge when its voltage reaches 4.25V and stop discharge when its voltage reaches 2.7V."

Seems a bit high for the high and low for the low, but for the price, what the heck. This is not a critical pack and I think I can choke the high end with the solar charge controller.

 

[daromer]

If you just have low current just go with what ever ebike bms you can find.

Daly in all its glory but if you dont need high end current.

 

[Dr. Dickie]

If you just have low current just go with what ever ebike bms you can find.

Daly in all its glory but if you dont need high end current.

Thanks. I passed on Daly, as it was going to take a month to get here from China. I just got a cheap ($9) BMS. I am sure it won't show me anything, but this is just a little pad battery for a fan, which should only be needed when the sun is shining bright, so I don't expect it to really do much. I can check the 4 packs for equality myself.