Reliable power solutions for commercial fleets
Choosing the right power system, from batteries to inverters, battery chargers, and monitors, is critical to maximise fleet uptime. Merlin Power specialises in system design and supplies every component for your fleet's onboard power system.
BROWSE FLEET SYSTEM PRODUCTS
Whether it's trucks, vans, utility and emergency service vehicles, or marine vessels, our product range, in-house system design expertise, and 35+ years of industry knowledge mean you can rely on us to keep your fleet on the road or water and performing.
Our products are built for those running, monitoring, and maintaining vehicle fleets. We've built an award-winning reputation for delivering quality solutions to tight deadlines, for fleets of up to 500+ vehicles, so you can rely on us to reduce downtime, streamline installation, and keep costs within budget.
We hold large stock levels as standard. Whatever the supply-chain conditions and whatever your deadline, we're ready to take on your project.
Common applications
Vans
Power tail lifts and driver aids without draining the starter battery.
Utility & service vehicles
Reliable auxiliary power for tools, lighting, and communication equipment.
Refrigerated transport
Maintain consistent power for refrigeration units, even during extended idle periods, regardless of outside temperature.
Welfare Vehicles
Power catering, heating, hygiene and washroom facilities for extended periods of time, without a mains power supply.
Case studies
Real systems, real results.
Powering Public Sector Fleets With A Bespoke Vehicle Power Installation
For a Met Police vehicle, Merlin Power designed a compact high-capacity power system — a Fullriver deep-cycle battery, SmartBank Pro charging, and dual battery monitors — engineered to fit entirely below the wheel arch height without compromising performance.
Read case study →Creating A Vehicle Electrical Build Capable Of Communicating With Satellites
Merlin Power engineered a self-sufficient power system for a next-generation SatComms van — a 38kWh 48V primary bank, 4kWh 12V auxiliary system, and 4kW AC output — modelled in 3D and built to run broadcast and satellite equipment reliably off-grid.
Read case study →500 Covid-19 Mobile Testing Units Produced And Delivered Within 3 Months
Working with TGS Group at the height of the pandemic, Merlin Power designed and supplied custom electrical systems for 500 Mobile Testing Units in just three months, despite Brexit-era supply chain disruption — helping double the UK's testing capacity and earning a Western Morning News Innovation Award.
Read case study →A Pre-Built Power System That Installs With Just Two Wires
Merlin Power's PowerBoard bundles an inverter, flat-battery protection, and a socket into one pre-wired, factory-finished unit — cutting vehicle converters' electrical install down to two wires and one supplier. First fitted in Vansform's demo vehicle, it debuted at RTX 2026.
Read case study →Why Merlin Power for Marine?
Full system coverage
Every component, one supplier.
Expert system design
Our engineers specify the right setup for your load and location.
Premium brands only
Fullriver, TBS, Merlin & more - tested, trusted, UK-Stocked.
UK technical support
In-house specialists to help you get the most from your system.
Fleet products
Deep Cycle Batteries
Fullriver AGM batteries for auxiliary power in vans, trucks, and specialist vehicles.
Shop batteriesStarting Batteries
Full Throttle AGM cranking batteries are built for reliable starting power and extreme high cranking power demands.
Shop batteriesSplit Charging
SmartBank Pro and DC-DC chargers, designed to ensure your auxiliary batteries are automatically charged without compromising your starting batteries.
Shop split chargingFlat Battery Protection
PowerGuard Pro prevents flat batteries and maximises battery health across your fleet.
Shop flat battery protectionBattery monitors
TBS Expert and SmartGauge — always know your state of charge.
Shop monitorsInverters & chargers
Pure sinewave inverters and inverter-chargers for AC loads.
Shop invertersNot sure where to start?
Tell us your application and load requirements — we'll spec the right system.