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Figure 1: Voltage vs. Charge
There is very little voltage difference between 10% and 95% full in LiFePO4 batteries. To ensure
batteries are at the same charge level they all must be initially charged to the same voltage at the tail
upper end.
3.1.3.
Add Batteries of Exact Same Model Together
Caution:
All batteries in a bank must be the same model. Mixing different batteries will result in
unexpected shutdowns and possible damage to the system.
When expanding your battery bank only combine the same model batteries together. Do not mix and
match different models or brands. Doing so will result in the batteries unexpectedly shutting down
and possibly cause damage.
3.1.4.
Disable Your Chargers Equalizing Cycle
Caution:
Disable charge equalizing to prevent damage to your system.
If equipped, charge equalizing must be disabled in your charge controller(s), including the one in your
inverter, if it has one.
3.1.5.
Do Not Use a Battery Temperature Sensor (BTS)
Caution:
