LifePo4 storage charge (60 %) for boats/rev/vacation homes

[danphillips]

Doing some research I came across a comment that LifePo4 batteries should not be stored at 100% charge, but instead at about 40-60%. So while at dock or in storage what do we do?

If this is the case, how can we accomplish this with standard chargers?

How do we account for the BMS draw over maybe a month or two if disconnected ?

We could completely disconnect the LifePo4 batteries and install a standard lead acid battery and leave a small trickle charger on.

 

[JoeHam]

Watch Will’s video with the Battleborn CEO where this issue is discussed.

Not as big a deal as people make it out to be IMHO.

 

[Bob B]

According to the Battleborn CEO, the most important thing is that the charge isn't so low that the self discharge can damage the battery.

I don't know the reason for the 60% recommendation.

 

[grizzzman]

The battery degrades faster the higher the voltage. Long term storage drop the battery voltage,(40 to 60%) and if really long term storage disconnect the BMS (and any parasitic load)

 

[Danny]

You can get cheap charge control modules interface them to your charger so you can turn off your charger at a 60 pct SOC. I have 2 settings 95 pct SOC and 60 pct SOC