What is an Inverter?
Turns your 12V battery power into normal 230V mains power for laptops, kettles and chargers.
Simplified animation — not to scale.
In plain English
Most appliances you own are built for a three-pin UK plug, not 12V. An inverter takes battery power and converts it into standard mains electricity so you can plug ordinary household gadgets in, even with no hook-up.
"It's the reverse of a phone charger — instead of turning mains power into something a battery likes, it turns battery power into something your laptop likes."
How it works
Electronics inside the inverter rapidly switch the battery's DC power back and forth to create an AC waveform, then step the voltage up to 230V. Bigger appliances (kettles, hairdryers) need bigger inverters and drain the battery fast.
Signs of trouble
- ⚠Inverter won't switch on — check its fuse and battery voltage first
- ⚠Loud fan noise or shutting down under load — usually overheating or overload
- ⚠It works but the battery drains very quickly — normal, mains-hungry appliances use a lot of power
£60 – £500 fitted, depending on wattage.
Ballpark only — depends on your van, converter and local labour rates.