I have a system with 2 x 330AH smart lithium batteries = 8 kW
12 volt system
I thought i could discharge to 5% SOC, but at 40% the voltage drops below 11.2 Volt and i have a BMS shutdown. With no big loads connected at the moment.
Charging from 40% to 100% was done in 2 hours @ 195 amps = 4.6 Kwh
Which means the capacity of my victron smart lithium batteries is comparable to lead acid batteries.
Is this a manufacturing problem? or could it have anything to do with my parameters.
The batteries where fully charged a couple days ago and both balanced.
Decreasing the BMS shut down voltage does not look to make any difference, with this rapidly declining voltage.
From 45% SOC the batteries voltage is rapidly declining, so it's looks very empty.
So it looks like i got batteries of 200 AH instead of 330AH.
4600/0.95/2/12=201AH
Below some graphs, the shutdown was @ 05:51
The characteristic of this new batterie looks in no comparison to the graph from the manual.
2022022401 - Bootschappen-1.pdf