Electric Outboard Motors Explained: How They Work & What to Expect

An electric outboard replaces the fuel tank, carburettor and exhaust of a petrol engine with a battery pack and an electric motor. There's no combustion, no fuel to store, and far fewer moving parts — which is why electric outboards are quieter, need less maintenance, and start instantly at the twist of a throttle.

How the power rating works

Electric outboards are rated in kW and given an "HP-equivalent" figure so you can compare them against a petrol engine you already know. Our ePropulsion Spirit 1.0 Plus, for example, is a 1kW motor rated as roughly 3HP equivalent — enough to push a tender or small inflatable at a similar pace to a small petrol engine, just silently.

Real-world range

Range depends on battery size, throttle setting and hull weight rather than a single fixed number. As a guide, a standard 1276Wh integrated battery on a 3HP-equivalent engine will typically deliver several hours of cruising at half-throttle, or a much shorter runtime at full power — the same trade-off you'd expect from any battery-powered tool. Larger pod-drive systems in our range (up to 20kW / 40HP-equivalent) pair with correspondingly larger external battery banks for RIBs and day boats.

Petrol vs electric running costs

Electric outboards have no fuel, oil or spark plug costs, and servicing is minimal since there's no combustion cycle to maintain. The trade-off is a higher upfront price for the same equivalent power, and the need to plan charging around your trips rather than simply topping up a fuel tank.

Our electric range

We stock electric propulsion from ePropulsion, Torqeedo, TEMO, Haswing, Minn Kota and Blade Electric — from compact kayak and canoe trolling motors through to pod drives for larger RIBs. Browse the full range on our Electric & Eco Outboards page.