How to choose a battery
A new battery has to match the one in the car now: the same voltage, at least the same capacity in amp hours (Ah) and at least the same cold cranking amps (A). The case dimensions and the side the positive terminal is on decide whether the battery will fit the tray and whether the cables reach the terminals. These figures are on the battery's own label and in the car's owner's manual.
Capacity and cold cranking amps
Capacity in amp hours shows how long the battery can run the car's electrics with the engine off. Cold cranking amps show how much current it can deliver in the cold, and the lower the temperature, the more that figure matters. Almost every battery in our range states its current to the EN standard; DIN and SAE figures are not directly comparable with it.
AGM, EFB and conventional batteries
AGM and EFB batteries are built for cars with a start-stop system, where the engine is cranked many times more often than usual. If the car left the factory with AGM, the replacement has to be AGM too; if it left with EFB, either EFB or AGM will do. The type is stated on the label of the old battery.