Could there be a duller bit of kit in the van? Possibly so, but this one certainly scores badly on the dullness to price ratio. It simply plugs into mains power – either an extension cable run from the house, or a campsite hookup cable, and then charges the leisure batteries.

This one has a couple of redeeming features:

• Its a lovely shade of blue
• It supports bluetooth, and has an accompanying app, so you can monitor the charge state from your phone, if you’re that way inclined.

It’s made by Victron, so it’s pricey, but well-made. It’s also perhaps a little underpowered for our 220Ah battery setup (30A might be generally recommended), but speed of charging is not really a high priority for us, and that’s the only drawback. It’s also very compact compared to the sine inverter.

£154 from 12V Planet.