Start battery

The vehicle has a single-pole electrical system that uses the chassis and engine mount as conductors.

The start battery is used to start the electrical system and power the starter motor and other electrical equipment in the vehicle.

The start battery should only be replaced by a workshop1.

The vehicle has a voltage-regulated alternating current generator.

The start battery is a 12 V battery, dimensioned for the carbon dioxide-reducing functions Start/Stop and regenerative charging and to support the function of the vehicle's various systems.

The service life and performance of the start battery are affected by factors such as driving style, driving conditions, climate, battery discharges, number of starts, etc.

  • Never disconnect the start battery while the engine is running.
  • Make sure the cables to the start battery are correctly connected and the clamps are securely tightened.

 Warning

  • Batteries generate hydrogen gas, which is flammable and explosive.
  • Do not connect the jumper cable to any part of the fuel system or to any moving parts. Avoid touching hot manifolds.
  • Battery fluid contains sulfuric acid. Do not allow battery fluid to contact eyes, skin, fabrics or painted surfaces.
  • If contact occurs, flush the affected area immediately with water. Obtain medical help immediately if eyes are affected.
  • Never expose the battery to open flame or electric spark. Do not smoke near the battery. Failure to follow the instructions for jump starting can lead to injury.

Connection points

 Warning

California Proposition 65

Operating, servicing and maintaining a passenger vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to www.P65Warnings.ca.gov/passenger-vehicle.

Use the vehicle's connection points in the engine compartment to connect an external start battery or battery charger.

The battery terminals on the car's start battery in the luggage/cargo area must not be used.

If the start battery is being charged, the support battery will also be charged.

P5-1546-XC90 Battery charging points
  1. P5-Icon red circle 1Positive connection point
  2. P5-Icon red circle 2Negative connection point

 Important

Only a modern battery charger with controlled charge voltage should be used to charge the starter battery and support battery. The rapid charging function should not be used as this could damage the battery.

 Important

Failure to observe the following could cause the infotainment energy save mode to temporarily stop working and/or a message in the driver's display regarding the state of charge of the starter battery may be temporarily incorrect after an external starter battery or battery charger has been connected:

  • The negative battery terminal of the vehicle's starter battery must never be used to connect an external starter battery or battery charger – only the vehicle's negative charging point should be used as a grounding point.

 Note

If the starter battery becomes discharged too many times, it will shorten its service life.

The service life of the starter battery is affected by several factors, such as driving conditions and climate. The starting capacity of the battery reduces gradually over time. The battery must therefore be recharged if the vehicle is not used or a long period of time or if it is only driven short distances. Severe cold further limits the starting capacity.

To keep the starter battery in a good condition, the vehicle should be driven at least 15 minutes per week or the battery should be connected to a battery charger with automatic trickle charging.

A starter battery that is always kept fully charged has the maximum service life.

Location

P5-1617-S90 Starter battery location
The start battery is located in the trunk.

 Warning

If the starter battery is disconnected, the function for automatic opening and closing must be reset to function correctly. A reset is required in order for the pinch protection to work.

 Important

On certain models, the battery is secured with a tensioning strap. Make sure that the tensioning strap is always securely tightened.

Specifications for start battery

Battery typeH7 AGM H8 AGM
Voltage (V)1212
Cold start capacity2 - CCA3 (A)800850
Dimensions, L×W×H315×175×190 mm (12.4×6.9×7.5 inches) 353×175×190 mm (13.9×6.9×7.5 inches)
Capacity (Ah)8095

Volvo recommends that batteries are replaced by an authorized Volvo workshop.

 Important

If replacing the battery, make sure you replace it with a battery of the same size, cold start capacity and type as the original battery (see the decal on the battery).
  1. 1 An authorized Volvo workshop is recommended.
  2. 2 According to EN standard.
  3. 3 Cold Cranking Amperes.