Check the listing for details. 7AMP 12VOLT SOLAR PANEL 12V BATTERY CHARGE CONTROLLER REGULATOR 7A UP TO 100W. Condition: New. Listed at 22.99 USD. BRAND NEW SOLAR - 7 AMP 12 VOLT SOLAR CHARGE CONTROLLER REGULATOR 7A 12V CONTROL WITH LOW VOLTAGE DISCONNECT FEATURE This is for a Brand New 7 amp, 12 volt Solar Charge Regulator. This reliable solar charge controller has good features and a low cost. Unlike most small controller, this one has leads for direct load connections with the added safety of a low voltage disconnect feature. With this added feature, the controller protects your battery from both overcharging and over discharging. This will prolong the life of your battery. It comes with plugs for easy installation with panels that are equipped with SAE flat body molded connectors. If your panels have bare leads, the connectors can easily be removed to make positive and negative connections to one or more panels with standard wire nuts. A great controller for use with solar panel(s) up to 100watts. Detailed Description:Prevents Overcharging of 12V BatteriesProtect Battery from Over DischargeFor Use with 12 Volt Solar Panels and Batteries OnlyMAX Array Current output: 7 ampsOvercharge Protection: 15.5 volts (+0.5)Over Discharge Protection: 11 volts (+/- 0.3)Handles up to 100 Watts of Solar PowerThree LED status lights Operating Temperature: -10 C to 42 CMaintenance Free Protection of Your Solar Panel and BatteriesMaintains Battery VoltageMaintain 12V Batteries in a Fully Charged State(L x W x H) 7 1/8" x 2 7/8" x 1"Weight .30 lbs Operation:Charging Light Indicates Battery ChargingGreen Light Indicates Full BatteryRed Light Indicates Low Voltage Installation:Connect the Solar Controller "Battery" leads to the Battery TerminalUse Caution Not To Reverse Battery PolarityConnect the leads from the Solar Panel to the "Solar Panel" leads on the controllerLoads can then be connected to the "load" leads of the controller ~A solar panel is basically a battery charger. When exposed to sunlight it produces DC current much like a common battery charger that runs off standard household 110 Volt current. The solar charge controller regulates the amount of energy that the panel puts into the battery. Once the battery is fully charged it opens the circuit to prevent damage caused by overcharging. When you use some of the stored energy, it automatically closes the circuit and starts to recharge the battery during sunlight hours. The amp rating of a controller tell you how much panel current it can safely handle. The voltage rating tells you the panel voltage if can regulate. Controllers with a LVD (low voltage disconnect) also protect your battery from deep discharges. When a load is connected to these leads and the voltage of the battery drops to around 11volts, it will automatically disconnect the load to protect the battery.