Waterproof USB Solar Panel with 10A Solar Cell Controller Outdoor Charging for Car Yacht Battery Boat Condition: Item Type: Solar Panel Color: As picture shown Solar Panel: ISC: 3,33 Voc: 20V Technical Analysis Vpmax: 18 V Power: 400W Ipmax: 2.77 A Output: 5 V / 18 V Size: Approx. 660 x 280 x 2.5mm/26 x 11 x 0.1in Waterproof Rate: IP65 Conversion Rate: 19.6-20% Material: Monocrystalline Silicon Battery Application: Suitable for Cycling, Climbing, Hiking, Camping, Travel, etc. Controller: Model: PWM Step-down Charging: 28.8 V Floating Charge: 27.4 V USB Output: 5 V / 3A Autoconsumo: <10mA Discharge Stop: 21.4 V Maximum Solar Input: <50 V Current: 10A / 20A / 30A / 40A Rated Working Current: ≤20A Uninstall and Reconnect: 25.2 V Working Temperature: -35 ℃ -60 ℃ Safety Instructions: 2. The battery cable should be as short as possible to minimize losses. 3. The regulator is only applicable to lead-acid batteries: open circuit, AGM, GEL (not applicable to NiMH, Li-ion or other batteries). 4. The charging controller is only suitable for adjusting solar cell modules. Never connect other load sources to the charge controller. System Connection: 1. Connect the battery to the charging controller - positive and negative. If a 12v battery is detected, 1 will be displayed, and if a 24v battery is detected, 2 will be displayed. .2. Connect the photovoltaic modules to the regulator plus and minus. 3. Connect consumers to charge controllers-less and less.