... Charger optional 5. Working >10hrs/day Home Solar System Model: BS1224-20W - Assortment ITEMSMODELQTYSPECIFICATIONINCLUDINGSolar Panel20W1pcWorking voltage 17.5V, ... 3W bulbs available for option, cost higher. LEAD-ACID BATTERY,12V24AH DATASHEETModel No. OT24-12, Rated Voltage:12V, Rated ... 6ACharging Voltage: 14.5-15.0V/12V77°F(25°C)Floating charging: Maximum charging current: 6ACharging Voltage: 13. ...