Rechargeable batteries are a problem because unlike non-rechargeable batteries, which die after shocking someone and battering them up, they can teleport to their charging station to recharge to injure more people. Although they need supplies from a Refinery (Petrol) and Power Generator(Electricity), it is a menial thing compared to a innocent murder of a civilian. They can recharge in as little as 15-30 minutes. NiCD batteries is the most common subspecies of rechargeable batteries. However many other subspecies exist such as NiMH, dilithium ion, and rechargeable alkaline.
Batteries can combine to heighten their voltage. With more voltage comes more beats, and more beats means more pain. A domestication of batteries is the the battery pack. The battery pack allows batteries to combine with ease. Battery packs are similar to batteries, having terminals on their bodies. Also batteries packs can reach high voltages.