1. Solar Controller Battery Voltage: 12V/24V auto; Rated Charge Discharge Current 30A; USB Output: 5V/2A max; Industrialgrade master chip; Largescreen LCD display, adjustable charging and discharging parameters. 2. Adopts double MOS series circuit control makes the voltage loss dropped by 50%. Dual MOSFET reverse current protection, low heat production (ALL electronic components generate heat when they are running, it is better to shelter them for better heat dissipation, avoid direct sunlight exposure or damp place). 3. Buildin overcurrent, opencircuit protection, reverse protection, Selfrecovery type, no damage to the controller, suitable for home, industrial, commercial etc. 4. The regulator is only suitable for lead acid batteries: open, agm, gel. it is not suited for nickel metal hydride, lithium ions or other batteries.