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 hybrid* type, a 48 V battery that also allows regenerative braking while driving.

Location

P6-1917-XC40-Support battery location
12 V support battery is located down in the engine compartment. The starter battery is also shown here (top).
P6-2017-XC40-48V battery
If the car is the mild hybrid type, it will have a 48 V support battery instead, located on the left-hand side of the cargo area. The battery must only be handled by an authorised workshop.

Support battery maintenance

The support battery normally requires no more service than the normal 12 V battery (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 capacity1 - CCA2 (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 hybrid* type, it will be equipped with a lithium-ion type 48 V battery instead.

  1. * Option/accessory.
  2. 1 According to EN standard.
  3. 2 Cold Cranking Amperes.