Weird PV/battery behavior

[Snotface]

Hi

I got my solar solution installed last week, i didn't DIY it.
It is a Sunsynk inverter with Revov batteries.

I have noticed something strange during the day with good sun, the battery charges to 100%, but then throughout the day it slowly discharges down to 99% before the PV recharges it back up to 100%; this happens a few times during the day.
I have changed my "priority to load" and have switched off my Eskom connection. The PV generates more than enough to run the house so why is the inverter/battery doing this?

Thanks

 

[Flanders]

99%? Sounds pretty normal to me.

 

[UB40]

Sounds normal, all my Ecoflows do the same, only recharges again once it hits 99%

 

[Snotface]

Thanks for the replies. If it is normal, then no worries. Was worried that such shallow discharges over time might undermine my LiFePo4 batteries.

 

[TheChamp]

Thanks for the replies. If it is normal, then no worries. Was worried that such shallow discharges over time might undermine my LiFePo4 batteries.

There's a good reason they say they have a 80% upwards depth of discharge, a 1% is hardly anything to bother the batteries.

Also remember that PV production is not constant so the battery will have to chip in now and again.

 

[wingnut771]

It’s probably BMS related where the BMS turns off charging circuit when battery is full then turns on again when a certain level has been reached.