EJ Smart Battery monitors are easy-to-use devices that visibly and effectively display how long the battery's charge will last. It also calculates how much power the battery has versus how much charge is going out, while providing the approximate amount of time the battery will remain charged. There is a wide range of battery monitors, depending on the specific application. Some of the more identifiable monitors include RV battery monitors, marine battery monitors and car battery monitoring systems.

EJ smart battery monitor can be used with Lead Acid, Lithium Iron Phosphate, AGM, Gel Cell and Nickel Metal Hydride batteries with a voltage range of 8V to 120V.

It's designed to measure the current state of a battery's function, measuring voltage, current and capacity in real time by Phone, The monitor will show both power consumption as well as power replenishment.