Inaccurate SOC Reading AC180

Product Discussion BLUETTI AC Series
1

Hi,
I noticed the SOC reading (AC180) will update at different rates when charging from PV (a solid continuous 150 watts from portable panels). For example, the change in SOC % is 2%-3% every 30 seconds or so from the SOC range 70%-85%. It then reverts to a more ‘normal’ update rate. I don’t trust the SOC reading. Anyone notice this kind of unit behavior? I have not contacted Bluetti. Thanks very much, Bill

2

@Ahirt4215 Have you upgraded to the latest BMS firmware? Please try upgrading first, and then perform a full charge-discharge cycle to see if the issue still exists.

If not, please share your AC180 SN and BMS version number.

3

Thanks. It states the unit is up-to-date. BMS v1033.12.
Serial number: AC1802319001771702. I will try a full charge and discharge…Bill

4

I performed a full charge-discharge and the SOC issue did not appear on the next PV intake.
Thanks for solving my problem. Really appreciate it, Bill