Features 1、Dual USB output, can automatically store various parameters set by the user, and can prevent accidental power failure, data will not be lost when the battery is off, and the solar charge controller can be charged for 2 mobile phones, tablets and other devices that require 5V power. 2、Intelligent safety electrical protection, with multifunctional electrical protection, intelligent control, automatic disconnection, over‑current short‑circuit protection, reverse connection protection, low‑voltage overcharge protection, overheating protection and other functions, effectively ensuring the stability of the system. 3、LCD display, with a clear display of status and data, and easy to switch modes and parameter configuration, suitable for home, industry, business, etc. 4、It can charge acid battery, ternary lithium battery and lithium iron phosphate battery. The USB output voltage is 5V/3A, and the battery voltage is 12V/24V. 5、The controller is made of high-strength plastic, adopts intuitive digital display settings, timing settings and digital displays, and the intuitive display corresponds to one-button operation. Specifications: Item Type: Solar Charge Controller Material: Plastic Color: Black System Voltage: 12V/24V (automatic identification) Maximum Photovoltaic Voltage: When The Battery Is 12V, The Maximum Voltage Is 23V, when the battery is 24V, the maximum voltage: 46V Rechargeable Battery Type: Acid battery / lithium ion battery (ternary lithium) / lithium iron phosphate battery USB Output: 2 USB outputs, maximum 5V/3A Standby Current: <10mA Working Temperature: -35℃ - 60℃ Size: Approx. 145x83mm/5.7x3.3in Package List 1 x Solar Charge Controller 1 x Manual