Renogy 20A MPPT Solar Charge Controller 12V 24V Auto with LCD Backlit Display, Temp Sensor, for Gel Sealed Flooded and Lithium Battery, Rover Elite

[Innovative MPPT Design]: Renogy Solar Charge Controller features advanced MPPT Technology with up to 99% high tracking efficiency, peak conversion efficiency of 96% and Lithium-reawakening feature. It is the best charging solution even in cloudy environments where the max power point of the solar panels will fluctuate all day. [Multiple battery adaptation]: MPPT Charge Controller supports four types of Deep Cycle Batteries: Gel, Flooded, Lithium-Iron Phosphate (12.8V), and Sealed/AGM Battery.Backlit LCD displays system information and identifying error codes. [12V/24V Automatically Detect]: 12V /24V Automatic System Recognition (for non-lithium batteries). [Full System Protection]: Renogy 20A MPPT Charge Controller safeguard your solar system. MPPT controller with self-diagnostic capability can assess and protect against reverse polarity, battery overcharging, battery over-discharging, overload, short-circuiting, and reverse current. [4-Stage Safely Charging]: Features 4-stage charging (Bulk, Absorption, Float, and Equalization) of Lead Acid Batteries and 2-stage charging (Bulk and Absorption) for Lithiuim batteries as well as Lithium Reactivation.