Batteries and power supply

The vehicle's own power is supplied by different batteries and components. These enable the vehicle's electric functions.

The vehicle's primary electrical system operates with 12 V voltage and powers electrical equipment.

Mild hybrid1 vehicles are equipped with a 48 V system in addition to the primary electrical system.

Batteries

To supply power to various components, your vehicle is equipped with:

  • a 12 V start battery that powers the vehicle's primary electrical system
  • a support battery that helps during the Start/Stop function's start sequence. The battery is either a 12 V battery or, if the vehicle is a mild hybrid1, a 48 V battery that also enables regenerative braking while driving.

 Warning

48 V voltage may be dangerous if handled incorrectly. Do not touch anything on batteries that is not clearly described in this Owner's Manual.

  • Never use a 48 V support battery to jump-start the vehicle.
  • External electrical equipment may not under any circumstance be connected to the 48 V battery.
  • Only a workshop may replace or perform service on the 48 V battery – an authorized Volvo workshop is recommended.
  1. 1 Vehicles with engine variants B3, B4, B5 or B6 are mild hybrids.