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DEYE SUN-12K no decharge below 9%

I see your problem there in the picture. A very different looking BMS tool compared to mine (got it from the manufacturer, but don't know even know who's the manufacturer of my BMSs as my batts are prebuilts and very cheap ones, so they probably have cheap/shitty BMSs too).

this is a Seplos V2 ( would assume 10e)
and as stated many times , i run and have run these exclusively for a while now
 
this is a Seplos V2 ( would assume 10e)
and as stated many times , i run and have run these exclusively for a while now
OK. I think there are many Seplos V2/Deye/Sunsynk users here so hopefully OP can get this sorted out. @~3,16V cell voltage he has still some safely usable capacity left in his batts.

@houseofancients are you running closed loop? If so how low does your cell voltages go?
 
OK. I think there are many Seplos V2/Deye/Sunsynk users here so hopefully OP can get this sorted out. @~3,16V cell voltage he has still some safely usable capacity left in his batts.

@houseofancients are you running closed loop? If so how low does your cell voltages go?
closed loop...
approve 3.0v ...

then again, i never go that low as i have ample capacity, and in my TOU is set never to go below 20% as advised by all manufacturers
 
A short update. The Deye inverter is apparently not involved in the Force Charge. it's initiated by the Seplos BMS 2.0 sw 16.6. None of the monomer or packet low voltage values are reached. I disabled all safety features (for now) and other fetures that I think could influence the behavior.
what am i overlooking in the BMS settings that triggers force charge?
 
I also considered this option. But there are some downsides to this.
Another option I considering could be an option is to "cheat" with the SOC value by changing the rated capacity of the cells. in that way I hope that I can use voltages of the cells to determine when the battery is decharged instead of an estimated soc of 9%
 

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