Description Show Less 1 * Solar panel 1 pair of alligator clips 1 * Car charger 1 * Manual 1 * Optional Solar Charge Controller 1 * 10 in 1 power cord Solar panels Maximum power (watt): 70000W Working voltage (Vmp): 18V ± 0.3V Working current (Imp): 1.6A ± 0.15A Short circuit current (Isc): 1.8A ± 0.15A Open circuit voltage (Voc): 20V ± 0.8V Voltage temperature coefficient: (0.06510 ± 0.15)% / ° C Current temperature coefficient:-(160 ± 10) mA / ° C Temperature coefficient power:-(0.5 ± 0.05)% / ° C Maximum system voltage: 20V Ambient temperature: -40 ° C ~ 85 ° C Air resistance: 50psi (2400pascals) Snow resistance: 113psi (5400pascals) Item size: about 420 * 280 * 2.5MM feature High efficiency, the conversion rate reaches 35-37%, Solar panel for flexible surface mounting Easy to install and easy to install Maximum solar input: Balance: 14.2V / 14.4V / 14.6V Floating point: 13.7V (default, adjustable) Discharge stop: 10.7V (default) Discharge reconnect: 12.6V (default, adjustable) Current consumption: <10mA Working temperature: -35-60 ° C Color: black feature Built-in industrial microcontroller. The large LCD display has all adjustable parameters. Complete 3-level PWM charging management. Built-in short circuit protection, open circuit protection, reverse connection protection, overload protection. Dual USB output, maximum current 2.5A, support mobile phone charging. Double MOSFET reverse current protection, low heat. feature: Suitable for campers, boats, houses, gardens, sheds or farms Provide appropriate power for 12v TVs, laptops, lights, refrigerators and other operating equipment. Flexible board, light and easy to install. Suitable for RVs, boats, small spaces or crowded areas. System connection 1. Connect the battery to the positive and negative poles of the charge regulator. 2. Connect the photovoltaic module to the positive and negative poles of the regulator. 3. Connect the user to the charged positive and negative regulators.