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1. Car Power Basics > 6. Upgrade Your Car Battery

Upgrade Your Car Battery

If you want to add a lot of electrical devices to your vehicle and still be able to start it up and drive it, you may need to upgrade your car battery.

There are two primary competing purposes for the battery in a vehicle:

  1. To provide a very high-amperage output for several seconds to start the car, then allow the engine to generate any further needed electricity.

  2. To provide a medium- to low-amperage output for many hours when the vehicle is off, to power devices such as car alarms or the station preset memory in car radios.

To meet these two different needs, two types of batteries are used in automotive applications: conventional lead-acid and deep-cycle.


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