SCR (Silicon-controlled rectifier (or semiconductor-controlled rectifier) chargers are fully automatic chargers, used about everywhere where batteries are commonplace. A SCR charger allow the owner to place a battery on charage, and not having to worry about overcharing the battery. Overcharged batteries lose power and amperage as well as causing internal damage to the battery, shortening its life. So browse our selection here at All Battery Sales and Service Online, for all your battery needs at low and competitive prices.