Volvo heavy‑duty trucks typically run on a 24‑volt electrical system formed by two 12‑volt batteries in series, using lead‑acid or AGM technology. Electric Volvo trucks, by contrast, use high‑voltage lithium‑ion packs for propulsion, with a separate 12‑volt system for auxiliary devices.
Standard Volvo trucks: the 24‑volt backbone
The following outlines the common setup found on Volvo’s conventional diesel and hybrid trucks used for freight and long-haul service.
Battery configuration
Most Volvo trucks employ a 24‑volt electrical system created by two 12‑volt batteries wired in series to supply starting power and essential electronics.
- Configuration: two 12‑V batteries in series to form a 24‑V system.
- Battery types: primarily flooded lead‑acid or absorbed glass mat (AGM) batteries, chosen for cost, reliability, and vibration resistance.
- Location and installation: batteries are typically mounted in the engine bay or under the cab, with standard maintenance access.
- Capacity range: individual 12‑V batteries commonly fall in the roughly 100–200 Ah range, with the combined bank sized to meet the truck’s electrical load.
- Replacement approach: Volvo manuals generally advise replacing batteries in pairs to maintain balanced performance.
For owners and operators, the exact battery type and capacity depend on the model year and configuration, so checking the vehicle’s service manual or battery labeling is advised.
Electric Volvo trucks: high‑voltage packs and the 12‑V backbone
Electric models shift the focus to propulsion energy storage while still maintaining a low‑voltage system for controls, lighting, and sensors.
Propulsion and auxiliary battery systems
Electric Volvo trucks use high‑voltage lithium‑ion battery packs to power the electric motors, with pack sizes sized to deliver the required range and performance. A separate 12‑V system (or a DC‑DC converter from the high‑voltage pack) powers cab electronics and standard accessories.
- Propulsion battery packs: large lithium‑ion energy storage modules (hundreds of kilowatt‑hours, depending on model and range target).
- Voltage configuration: packs are designed to supply high voltage to traction motors via appropriate power electronics and thermal management.
- 12‑V auxiliary system: a conventional 12‑V system (or a DC‑DC converter from the HV pack) feeds lighting, instrumentation, and low‑voltage devices.
- Battery management: a robust BMS monitors cell health, temperature, state of charge, and safety interlocks.
- Service considerations: high‑voltage components require trained technicians and safety procedures during maintenance and replacement.
When assessing an electric Volvo truck, consult the manufacturer’s specifications for battery pack size, charging options, range targets, and warranties, as these vary by model and market.
Maintenance and replacement considerations
Regardless of propulsion type, proper battery care extends life and reliability. Diesel and hybrid models follow traditional lead‑acid maintenance practices, while electric models rely on HV battery health monitoring and safe handling protocols.
Summary
Volvo’s traditional trucks rely on a 24‑volt system built from two 12‑V batteries, typically lead‑acid or AGM, with capacity depending on model. Electric Volvo trucks use high‑voltage lithium‑ion packs for propulsion and a separate 12‑V system for accessories. Always verify model‑specific specifications in the owner’s or service manual, as battery type, capacity, and configuration can vary by year and market.
What type of battery does Volvo use?
At Volvo, we create superior replacement batteries with exceptional durability, reliability, and performance in mind. All modern Volvo vehicles are outfitted with one of the following three types of batteries: PowerFrame, Enhanced Flood, and AGM.
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How much is a battery for a Volvo semi truck?
The best part is, our Volvo VNL Batteries start from as little as $174.99.
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How much does a new Volvo battery cost?
How much to replace the battery in my Volvo? Depending on power, size, and quality, prices for a replacement car battery range from about $45 to $250.
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How many batteries does a Volvo truck have?
We use lithium-ion batteries. Depending on the model, Volvo trucks can be offered with anything from 2 to 8 battery packs. For our heavy-duty trucks we offer two different types of batteries: one cube battery with 90 kWh installed, and one L-shaped battery with 98 kWh installed.
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