NEW 3 In 1 Upgraded 30/20/10A Solar Charge Controller, for Lead-Acid Battery, Lithium Battery, Solar Panel Battery Intelligent Regulator with Dual USB Port 12V/24V Auto PWM Paremeter Adjustable LCD Display Our controller can be used in ternary lithium battery, lithium iron phosphate and Lead-acid battery This controller is a intelligent, multi-purpose solar charge and discharge controller. Fixed LCD display with a very friendly interface is used in this product; various control parameters can be flexibly set, fully meet your various application requirements. This is NEW Solar Controller ,It can fully meet your home Photovoltaic system(including home lighting system)requirements.It can recognize 12V and 24V Lead acid ,Gel battery, nickel metal hydride, lthium ions , Lifepo4 or other batteriesautomatically. Product Features: 1. 10/20/30A PWM solar controller, Intelligent controller able to choose 12V/24V Lead-acid battery (Sealed, Gel, Flooded) and Lithium battery (LiCoMnNiO2, LiFePO4) 2. Multiple load control modes: 24Hours Working Control, Light Control, Light and Dual Time Control 3. Controller Automatic temperature compensation and Full protection, like Reverse-Polarity, Battery Reverse, Over-Heating,Over-Current, Over-Load, Low-Voltage Lightning Protection. 4. 4 stages PWM charging: Bulk, Absorption, Equalize, Float; 5. Double USB output 5V/2A and LCD display with Back-lighting shows devices operating data and working condition There are optional 10A 20A 30A model 10A: if your battery is 12V ,the max solar panel input is 25V 120W if your battery is 24V ,the max solar panel input is 50V 240W 20A: if your battery is 12V, the max solar panel input is 25V 240W if your battery is 24V, the max solar panel input is 50V 480W 30A if your battery is 12V ,the max solar panel input is 25V 360W if your battery is 24V ,the max solar panel input is 50V 720W