NOTE: The regulator is only suitable for lead acid batteries: OPEN, , GEL. It is NOT suited for nickel metal hydride, lithium ions or other batteries. When the battery voltage is low, the controller will automatically cut off the load from the system. If the voltage of battery is back to normal and the load will restart working. This MPPT controller has perfect SOC function, control charge current, and supply power to the loads.Prevent the battery from over-charging , over-discharging and reverse charging to solar panels during nights. MPPT solar charge controller MPPT10-60: Compared with normal solar charge controller, this MPPT controller could increase efficiency by 10%-30%. Voltage: 12V/24V Current: 100A colour: blue + black Material: colloid size: 17cm x 9.2cm x 4.5cm Package Contents: 1 x Solar Panel Regulator Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.