Features: 1.High Performance: Adopted high efficiency polysilicon PET material, 30W power deisng, compact size,long service life, can generate more electricity in full sunlight. 2.Voltage Controller: The 50A solar charger controller can prevent battery overcharge, overvoltage, discharge and short circuit, reverse connection, to fully protect battery. 3.Premium Material: Made of premium polycrystalline silicon materials which has good light transmission, good sealing, and very strong ability to absorb strong light. 4.Complete Kit: The kit consists of 30W solar panel, 50A 12V 24V solar charger voltage regulator controller, clips and cigarette lighter harness for battery charging. 5.Application: The polysilicon solar panel kit with charge controller is perfect for 12V batteries, used to charge and maintain AGM, Flooded, GEL and Deep Cycle batteries. Specification: Item Type: RV Solar Panel MaterIal: ABS, Polysilicon PET Power: 30W Sun Panel Size: Approx. 320x145x2mm/12.60x5.71x0.08in Controller Voltage: 12/24V Current: 50A Application: Suitable for car, RVs, cabins, boats, marines, shed, cabin, gate opener, battery operated gates, dry camping, garden watering, back up power and remote power use.