... battery solar controller 10A 12/24V charge 2 battery(bank) Duo battery solar controller 10A is designed for ... two battery(or two battery bank) charging, with common negative. its suitable for RVs, ... . SLC20-DB, 12/24V, 10A (for both PV and load) 2. SLC20-DB, 12/24V, 15A (for both PV ... SLC20-DB, 12/24V, 20A (for both PV and load)Product Features: 1. State of charge(SOC) 2. ...