A battery tester is a product that will help you to figure out the life of your battery by using a battery tester to test the voltage of your battery, and then calculate the time until the battery is completely dead. A battery tester will also tell you how much battery life you have left on your device.
UTL Online Solar PCU (Power Conditioning Unit) is an integrated system consisting of a solar charge controller, an inverter, and a grid charger for surprising power-cuts, short-circuits, or unstable voltage.
The inverter battery is a device that converts electricity from alternating current to direct current. In other words, it converts household AC power to DC power.