My solar controller lets me adjust float voltage. What’s the ideal float voltage for LiFePO4 storage?
My solar controller lets me adjust float voltage. What’s the ideal float voltage for LiFePO4 storage?
@Evie Clark
For LiFePO₄ (Lithium Iron Phosphate) batteries, the ideal float voltage depends on whether the system requires a float stage at all. Unlike lead-acid batteries, LiFePO₄ cells do not need to be kept at a constant high voltage once fully charged.
✅ Recommended Float Voltage:
13.4V to 13.6V (for 12V systems)
This range keeps the battery topped off without overcharging or stressing the cells.
⚙️ Notes:
If your solar charge controller allows it, you can even disable float charging entirely; LiFePO₄ batteries prefer to rest after full charge.
Avoid float voltages above 13.8V, as this can reduce long-term cycle life.
Always verify with your battery manufacturer’s specifications, as BMS settings may vary slightly.
Könnte sich die empfohlene Float-Spannung bei unterschiedlichen Umgebungstemperaturen ändern? Wenn ja, wie hoch sollte sie bei kühleren Temperaturen sein?
