Like the rest of the EPS V2 components, this battery charger is well build and durable and comes in a smaller form factor than its predesessor. Its basic function is to act as the interface between the energy source (wall outlet) and EPS DTI V2 Power Unit. Simply plug the battery into the charger and then the charger into the wall to charge your EPS V2 battery. There are two LED indicator lights to let you know that the charge is taking place or when the battery is at full charge. EPS Power Cable sold separately.