Feature: 1. High Transmittance: High transmittance low iron tempered glass for enhanced stiffness and impact resistance; solar panel connector leads for easy plug and play. 2. Monocrystalline Silicon Material: Solar panels use monocrystalline silicon material, which has high battery efficiency and stable and reliable long‑term output. 3. Efficient Charging: Solar panel charger is especially suitable for any place where sunlight can be obtained, realizing efficient charging, convenient and safe to use, environmental protection and energy saving. 4. ‑40°C to +80°C Temperature Range: Solar panel charger ‑40°C to +80°C temperature range for outdoor activities car yacht battery boat charger. 5. Stable and Reliable: Strict quality control to ensure stability and reliability, and multiple testing procedures for quality control. Specification: Item Type: Solar Panels Material:Monocrystalline Silicon, PET Laminate Size: Approx. 38 x 28cm / 15.0 x 11.0in (Manual Measurement Allowable Error) Solar Panel Type: Monocrystalline Silicon Power: 30w Open Circuit Voltage (Voc): 18V Maximum System Voltage: 18V Temperature Coefficient of Isc: (010+/-0.01)%/C Temperature Coefficient of Volatile Organic Compounds: Minus (0.38+/-0.01)%/C Temperature Coefficient of Power Voc: Minus0.47%/C Temperature Range: Minus40℃ to +80℃ . Package List: 1 x Solar Panel2 x Spare PV Connectors2 x Copper Core1 x User Manual Note: 1. when charging, make sure the appearance of the solar panel is facing the sun. 2. should avoid contact with impacting objects and other acute objects. 3. solar panels should not be bent too much to avoid breaking. 4. keep the appearance of the panel clean when charging to maintain high efficiency of solar power generation. 5. When the product is not put into use, it should be folded and stored.