1Photovoltaic Panel Drive: Portable solar charge controller can use photovoltaic panels to directly drive the solar controller. Dual USB, type C all support fast charging protocol, so that the phone, charging treasure faster charging. 2No Wiring: Portable solar charge controller's dc5521 interface directly connects to the controller, eliminating wiring troubles. 3Applicable Batteries: 12V 24V plumbic acid, lithium ion battery packs, lithium iron phosphate battery packs universal, can be automatically recognized, can also be manually adjusted. 4Widely Used: Portable solar charge controller compatibility, a machine multipurpose, controller output voltage, widely used in a variety of electric vehicles. 5Multiple Safety Protection: Solar panel controller has intelligent charging protection, with overcharge protection, overcurrent protection, reverse current protection, temperature protection, anti reverse protection, short circuit protection.