Hello i have 4 x 12v 12ah SLA batteries connected in series to get 48vdc, i am wondering what my setting should be to get accurate battery life remaining (percentage).

Not sure if this matters, but these 48vdc is used to power a 48vdc 1800w brushless motor and below are the specs

rated voltage: dc 48 v
Current limit : 32A
rated power: 1800w
matching motor: dc brushless motorUnder Voltage Protection: 20V

I want to get accurate battery percentage to monitor how much play time i have left on my go kart.

I have tried the following.

Setting 1 = P 48V

Setting 2 = On 120

Setting 3 = 20 and 54v

Setting 4 = On 20v

These settings don’t seem to work, i am not sure what i am doing

Thank you,