Dear @BLUETTI_CARE , I need your help.
One of my Elite 100 charging stations has started shutting down at 60% battery charge. The charge drops sharply from 80% to 60%, and the station shuts down. After turning it on, the station shows 0%. Charging from 0% to 100% happens very quickly in standard mode at 600W (about half an hour).
Looks like a calibration issue…
Charging station details:
SN - EL100V22525004805136
IoT - v8024.12
ARM - v2186.16
DSP - v2200.14
BMS - v1083.08
TL;DR - Discharge it. Let the unit cool for 3-4 hours to balance cells, then limit the AC charging rate to 1-2 amps in the app.
Try discharging the unit again at a constant rate until it reaches 0%. Then let the unit SIT for 3-4 hours to allow cell balancing to occur and also allow time for BMS to reset. When the screen says 0% its really 10% full because the depth of discharge is 90%. You only get to use 90%, the system saves the remaining 10%. The screen will show 0% but thats 0% available to YOU. When you recharge set the charging amps to 1 or 2 to allow the voltage to gradually come up slower and see if that helps with calibration a bit more. I have had to repeat a calibration process of my AC180 MORE than once before so its while uncommon, its not rare to have to do it more than once. Unfortunately if THIS doesn’t work, warranty support is your only option.
Hi @DmitryDr, thank you for contacting us. This does appear to be a calibration issue.
We have applied to push the new BMS firmware, which will take one business day. Please recalibrate the device after upgrading it tomorrow. We look forward to your feedback.
@Special thanks to sealy1986 for your attention and explanations.