Why Isn T My Car Battery Charging. So my car battery died 4 months ago while it was unused in my garage during the summer interior dome light left on for months. To check this wait 12 to 24 hours after charging to the full voltage keep the battery out of the vehicle and measure its voltage.

May not be appropriate for all ages or may not be appropriate for viewing at work. My summer Car My battery is not charging. Even at a mild 32 degrees a battery is 35 weaker.
Testing a car batterys charge.
The battery voltage should hypothetically get higher once the engine is started and running since the alternator should be giving power to the engine. This is the standard position for this. To check this wait 12 to 24 hours after charging to the full voltage keep the battery out of the vehicle and measure its voltage. This little light in the shape of a battery will come on for a few seconds when starting the car but if it remains on or comes on while you are driving the car there is a problem.

