Description
A GM battery is a rechargeable battery that provides electrical energy to your auto.It’s also called an SLI battery (abbreviation of starting-lighting-ignition) and its chief purpose will be to start the GM engine.
Power for the auto is supplied by the alternator once the engine is operating.
Typically, starting discharges less than three per cent of the battery capacity. SLI batteries are designed to discharge a high burst of current, measured in amperes, and then be immediately recharged.
They’re not designed for deep discharge, plus a full discharge can decrease the lifespan of the battery.