IMREN 18650 Battery — Lithium Battery
1 Plug your battery charger into a wall outlet.
To determine whether or not your battery charger is putting out as much voltage as it’s supposed to, you’ll first need to make sure that there’s electricity running to it. Hook the power cord up to a nearby AC outlet. This will cause the charger to begin channeling electricity, which you’ll measure using a multimeter tool.
More things you don't know about the 18650 batteries
18650 batteries are widely used in notebook computers, walkie talkies, portable DVDs, instruments and meters, audio equipment, aircraft models, toys, video cameras, digital cameras and other electronic equipment.