12 V battery

Updated 28/10/2024

The 12 V battery powers the main electric functions in your car.

Keeping the 12 V battery charged

The 12 V battery is charged whenever the engine is running. However, it charges better when driving the car. Using a lot of energy without allowing the 12 V battery to charge can lead to low battery level and electrical features can be reduced or disabled.

When your aren't driving the car, avoid using electrical functions such as:

air conditioning
headlights
wipers
radio
centre display
or the 12 V socket and USB ports.

If you still need to use certain features while the car is stationary, turn the engine off to use less power.

If the battery level is below a certain point, you will need to charge it with an external charger or jump start the car with an external battery.

Servicing and replacement

The service life of the 12 V battery depends on several factors, such as driving conditions and climate conditions. The capacity will decrease over time.

Maintain the battery by driving for at least 15 minutes every week or connect a battery charger with automatic maintenance charging. Keep the battery fully charged to ensure the longest possible service life.

It is recommended that you contact an authorised Volvo workshop if the 12 V battery needs to be replaced. A replacement battery must have the correct specifications, such as type and capacity.

Warning

If the 12 V battery has been disconnected, the windows' pinch protection needs to be reset.
The battery can generate oxyhydrogen gas which is highly explosive.
The battery contains sulphuric acid which can cause serious burns and corrosion. If the sulphuric acid comes into contact with skin or clothes, rinse them with plenty of water. If the acid gets into eyes, seek medical attention immediately.
Never smoke near the battery.

Important

Do not disconnect the battery while the engine is running.
Ensure that all cables are correctly connected to the battery.
If there is a strap holding the battery in place, make sure it is pulled tight.

12 V battery specifications

Battery type	Voltage	Capacity	Cold start capacity1	Length	Width	Height
H7 AGM	12 V	80 Ah	800 A	315 mm (12.5 in)	175 mm (6.9 in)	190 mm (7.5 in)