Correct charge/discharge current: It is recommended never to charge or recharge lead batteries at more than 0.2C, i.e. 20% of the capacity of the battery bank (ex: 20A for a battery bank of 100Ah).
When sizing a photovoltaic installation, make sure that the maximum output current is less than 20% of the battery capacity. Let: Imax (A) = Pmax (W) / Ubat (V) < 0.2C
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