Your vehicle owner’s manual lists battery specifications. Match to the ratings on the battery label:
Group Size: Battery dimensions and placement of terminals.
Cold Cranking Amps (CCA): Ability of the battery to crank the engine at 0 degrees. (Cold temperatures slow electrochemical activity and thicken engine oil.) Make sure your battery meets or exceeds the CCA for your vehicle.
Reserve Capacity (RC): The number of minutes your car will run on battery power alone. If you live in a warmer climate, you might want to give more weight to this rating.
Freshness: Don’t buy a battery older than six months.