CONVERSION EFFICIENCY: Waterproof solar panel kit saves energy with high 30W conversion efficiency, good output efficiency and low light efficiency. 2、WITH BATTERY CLIP: Polycrystalline solar panel kit can charge the device. Battery clips are of moderate length for easy use. 3、POLYCRYSTALLINE SILICON: 30W 12V solar panel is made of polycrystalline silicon and ABS material, which is robust and long lasting. 4、EASY TO INSTALL: 30W 12V solar panel kit is lightweight, portable, adaptable, easy to install and comes without power storage. 5、APPLICABLE SCENARIOS: Solar panel kit is perfect for camping, hiking, backpacking, horseback riding, fishing or other outdoor activities.