Battery

What it does

Stores the power that starts the engine and runs the electrics when it is off.

Signs it needs replacing

• Slow cranking
• Needs a jump start
• Lights dim at idle

What to tell the shop

• Vehicle make, model and model year
• Engine size, and whether it is manual or automatic
• The number printed on the old part, or a photo of it
• Whether you want genuine, OEM or a local replacement