Phones, tablets, headphones, cameras, torches... the number of devices we charge on a trip keeps growing. Having good USB and 12V sockets spread around the camper van is one of those comforts that make a real difference day to day. What's more, charging directly at 12V is more efficient than doing it through an inverter. Let's see how to make the most of them.
Why charge at 12V instead of through an inverter
When you charge your phone with a normal charger plugged into an inverter, there's a double conversion (12V to 230V and back down to 5V), and energy is lost at each conversion. Charging directly from a 12V USB socket avoids these losses: it's more efficient and uses less battery. For small devices, it's the best option.
Useful types of sockets
- USB-A and USB-C: USB-C with Power Delivery (PD) charges light laptops and modern phones quickly. It's worth having both.
- 12V socket (cigarette-lighter type): versatile, for car chargers, a small portable fridge, and so on.
- Sockets with a voltmeter showing the status, useful for keeping an eye on things.
Where to fit them
Think about where you actually use your devices:
- Next to the bed: to charge your phone overnight without cables trailing across the floor.
- In the living area and at the table: for working or watching series.
- In the cab: for the GPS or your phone while driving.
- Near the kitchen for small appliances.
Smart charging, no waste
Even though each charge is small, it all adds up. Unplug chargers when they're not charging anything (some draw power even when idle) and don't leave devices plugged in unnecessarily. It's one of the saving tricks we cover in how to save battery. And if you want to see how much everything is drawing, your battery's app shows you (monitoring your power consumption).
In summary
Having USB and 12V sockets spread around the camper van is convenient and, on top of that, more efficient than charging through an inverter; fit USB-A and USB-C where you really charge things (bed, table, cab). The step you can take today: check whether you have a USB socket next to the bed and another in the living area; adding a couple of well-placed 12V sockets makes a big difference to comfort while using less power than relying on the inverter.
