If a smaller battery is put in will it power everything

Asked by Feb 22, 2018 at 05:24 PM about the 2002 Cadillac DeVille

Question type: Maintenance & Repair

I just biught a 2002 deville guy said it had snaller battery
but i didnt think abiut i pulled off only to find iut the rear
windows didnt work and the trunk wouldnt pop so my
question is will a smaller battery power all the power
options

3 Answers

85,325

Battery size and capacity is only important for starting the engine. Once the engine is running the alternator powers the vehicle and keeps the battery charged. It's always a good idea to have the correct battery in the vehicle. It'll last longer and won't make the starter work too hard to get the engine started. HTH. -Jim

144,815

Cadillac's use a lot of power. A large battery is my advice.

1 people found this helpful.
7,455

Two things to look at - Physical size and electrical power. The correct physical size will keep the battery from bouncing around in the battery tray and, therefore, shortening its life. The electrical power it provides will determine if it is capable of properly operating all of the car's equipment. A battery store can help with both and tell you what you need. Look for a battery with a high CCA (Cold Cranking Amps) rating at least at or above the spec for the car.

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