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The last few days my system has been on float (something it hasn't done before) and yet when I try to use power the inverter crashes and sounds low voltage alarm. What could be the cause? And how can I fix this? Any ideas welcome. I am not a techie so please keep answers in simple language, many thanks. 
Here is a second screenshot. 
What battery do you have? What inverter do you have?
At 11.?volts there is it totally discharged. So it is possibly floating because it it not taking a charge anymore.
I am guessing it is a lead acid battery?
The pictures aren't all that clear so it is hard to tell.
Hello Alexandra. Thank you for your comment. My current system is .
1. 4 x 289 watt panels
2. victron charge controller smart solar MPPT 100/50
3. converter orion-TR 24/12-5 DC-DC
4. victron battery protect 12/24 100 AH
5. 2 x batteries monoblock u-power up-gc12 260 ah 12v
6. Inverter - victron phoenix smart 3000va 12/24 battery inverter
If you, or anyone else has some idea why it is suddenly not working well, I would appreciate it.
