🍀Product Description: Solar cell: Monocrystalline silicon Solar panel power: 300W Output tolerance：± 5% Maximum system voltage：700V Working voltage (Vmp): 16V ± 0.3V Working current (Imp): 3.12A ± 0.15A Short circuit current (Isc): 3.43A ± 0.15A Open circuit voltage (Voc): 19.2V ± 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 Standard Test Condition:lrradiance 1000w/mm², Temperature 25℃, AM=1.5 Solar panel size: 1060*280*3mm (41.7* 11in) Junction box: IP67 RETED Working temperature: -40℃+85℃. 🍀Tips: ☛There’s transparent plastic protective film on the surface of the solar panel, pls tear it off before use. ☛Pls do not use the PO BOX address when you place the order. In many cases, the logistics company cannot deliver the PO BOX. ☛The price do not include customs clearance and tariff payment. If necessary, you need to clear customs and pay customs duty. ☛Please ensure that your phone and address information is accurate and valid. When the logistics delivers the package, the invalid phone number and address will affect the transportation and delivery. 🍀Package included: (Battery not included) 1x 300w Solar Panel 1x 12V to 220V 220W Inverter 1x Controller 2x Carabiners 2 set of Connecting Cables 1 set of Connector 🍀Wiring sequence: 1.The battery connected to the controller first, 2.The solar panel connected to the controller, 3.Connected to the DC load. (will need inverter for AC load.) 🍀Product Feature: ☀【High Transformation Efficiency】our monocrystalline silicon efficiency can up to 25% percent. Bypass diodes minimize power drop caused by shade and ensure excellent performance in low-light environments.Note: our solar charger doesn't store the electricity. The battery not included. ☀【Highly Durable】Rigorously tested, the panel was designed to withstand extreme wind and snow loads. ☀【Wide Application】suitable for laptops, Car Batteries, Car, RV, Boat, Ship, Aircraft, Satellites, Space Stations, outdoor breeding, planting, tourism, solar street lamp. Light and Thin, easy to use and carry, suitable forcamping, hiking, climbing,Cycling, mountaineering, traveling or any outdoor activities. ☀【IP67 Waterproof Level 】protects this portable solar panel from occasional rain or wet fog. This portable solar charger is also the perfect gifts for you or your friends because of its delicate look. ☀【Easy to Operate】Metal holes in the corners of the product for fixing screws and mounting.Please put the solar panels under direct sunlight without any covering, it is better to place the solar panels toward the sunray. 🍀What you need to know: 1. This product must not be contacted with highly corrosive substances. 2.Do not drop or hit the junction box or the product, such as stepping on or scratching the surface with hard objects during use. 3. Scratches or dirt on the surface of the solar panel may cause the solar cell module to be inefficient, even burnout. 4. The solar panel must be installed in an area with good sunlight.The long-term work of the solar panel under shadow may have the risk of burning. 5. It is forbidden to connect the positive and negative poles of the product together. 6.Do not put the product into water or fire, and it will damage the product. 7. The total power or the voltage of photovoltaic module must be less than the rated power or the voltage of the controller. It is strictly prohibited to overload the controller. 8. The controller must be connected with battery first. The controller is used to protect the battery from overcharge and discharge. And if you use the power inverter, the inverter can only be connected to the battery, not directly to the controller. 9.The current and voltage parameters of solar panels are tested under standard test conditions. If the sunshine intensity and time are not enough, the power and current cannot reach the standard data.