Support battery

The car is equipped with a support battery that helps during the Start/Stop function's starting sequence.

The battery is either a 12 V battery or, if the car is the mild hybrid1 type, a 48 V battery that also allows regenerative braking while driving.

Location

P5-1617-S90/V90 Support battery location
The 12 V support battery is located in a box next to the strut tower.
P5-1917-XC90-48V battery
If the car is the mild hybrid type, it will have a 48 V support battery instead, located under the cargo area. The box over the 48 V support battery must only be handled by an authorised workshop.

Support battery maintenance

The support battery normally requires no more service than the normal starter battery. A workshop should be contacted in the event of questions or problems - an authorised Volvo workshop is recommended.

 Important

If the 12 V battery is replaced, make sure you replace it with a battery with the same size, cold starting capacity and type as the original battery. Volvo recommends that you use an authorised Volvo workshop for replacing the battery.

 Warning

48 V voltage can be dangerous in the event of incorrect intervention. Do not touch anything on the batteries that is not clearly described in the owner's manual.

  • 48 V support battery must never be used for jump-starting.
  • External electrical equipment must not, under any circumstances, be connected to the 48 V battery.
  • The 48 V battery may only be serviced and replaced by a workshop – an authorised Volvo workshop is recommended.

Specifications for support battery

Battery typeAGM
Voltage (V)12
Cold start capacity2 - CCA3 (A)170
Size, L×B×H150×90×130 mm (5.9×3.5×5.1 inches)
Capacity (Ah)10

If the car is the mild hybrid1 type, it will be equipped with a lithium-ion type 48 V battery instead.

  1. 1 Cars with engine alternative B4, B5 or B6 are the mild hybrid type.
  2. 2 According to EN standard.
  3. 3 Cold Cranking Amperes.