Can I Charge My Campervan from My House?
Yes, you can absolutely charge your campervan leisure battery from your house — and for most UK van owners, it is the easiest way to ensure you start every trip with a full battery. But there are right ways and wrong ways to do it. This guide covers the safe, efficient methods and explains what equipment you need, how long it takes, and the pitfalls to avoid.
Charging from home is one of the key elements of a complete campervan charging system, working alongside your solar panels and DC-DC charger to keep you powered up. If you are still planning your electrical build, try the VanPower calculator to see how home charging fits with your other sources.
Method 1: Shore Power Inlet + Internal Charger (Recommended)
This is the proper way to charge from home and the setup you should aim for in any conversion.
How It Works
- You install a blue CEE 16A inlet on the outside of your van (the same connector used at campsites).
- Inside the van, this connects to a consumer unit with an RCD and MCBs.
- A mains battery charger (like the Victron Blue Smart IP22) connects to the consumer unit and charges your leisure battery.
- At home, you use an adapter cable: blue CEE coupler on one end, standard UK 13A plug on the other.
You plug the 13A plug into your garage, driveway, or external house socket, connect the other end to your van's inlet, and the charger does the rest.
What You Need
| Item | Approximate Cost |
|---|---|
| CEE 16A shore power inlet | £10-£25 |
| Consumer unit (RCD + MCBs) | £30-£60 |
| Mains battery charger (e.g., Victron IP22 30A) | £95-£160 |
| Adapter cable (CEE to UK 13A plug, 10-15m) | £20-£40 |
| Internal wiring (cable, connectors, trunking) | £20-£40 |
Total: approximately £175-£325
Charging Speed
A UK 13A domestic socket provides up to 3,000W (13A at 230V). A typical campervan battery charger draws far less than this:
- Victron Blue Smart IP22 15A: Draws ~300W from the mains. Delivers 15A to the battery. Charges a 100Ah LiFePO4 from 20% to 100% in roughly 5-6 hours.
- Victron Blue Smart IP22 30A: Draws ~550W from the mains. Delivers 30A to the battery. Charges a 100Ah LiFePO4 from 20% to 100% in roughly 3 hours.
- Victron Blue Smart IP22 30A on a 200Ah bank: Approximately 6-7 hours from 20% to 100%.
In practice, you plug in the evening and wake up to a full battery. Set-and-forget.
Overnight Charging Is Cheapest
If you are on a time-of-use electricity tariff like Octopus Go or Economy 7, charge overnight during the cheap rate period. At around 7.5p/kWh (off-peak) versus 24p/kWh (peak), charging a 200Ah battery costs roughly 12p instead of 38p. The savings are modest per charge but add up over a year.
Advantages
- Clean, proper multi-stage charging that maximises battery lifespan
- No manual intervention — plug in and walk away
- The same setup works at campsites via the standard hook-up cable
- Consumer unit provides RCD and MCB protection
- Works in all weather
What to Watch Out For
- The adapter cable (CEE to 13A) limits you to 13A from the mains. This is fine for battery charging but means you cannot run a 3kW kettle through the van's sockets while charging.
- The 13A plug must go into an RCD-protected socket. Modern UK homes have RCD protection on all circuits, but check older properties.
- Do not run the cable through a closed window or door where it can be pinched or damaged.
Method 2: Portable Charger (No Shore Power Inlet)
If your van does not have a shore power inlet and consumer unit installed (perhaps it is a work in progress), you can use a portable battery charger connected directly to the leisure battery.
How It Works
- You buy a mains-powered battery charger rated for your battery chemistry (LiFePO4, AGM, etc.).
- You run an extension lead from your house to the van.
- You open the van, connect the charger's crocodile clips or ring terminals directly to the leisure battery terminals.
- Plug in and charge.
Recommended Chargers
- Victron Blue Smart IP65 15A (~£110): Waterproof (IP65 rated), Bluetooth monitoring, correct LiFePO4 profile. Ideal for direct battery connection.
- NOCO Genius 10 (~£80): 10A output, multiple battery profiles, compact.
- Ring RSCDC30 (~£80): 30A output, good for larger batteries, budget-friendly.
Charging Speed
The same maths applies as Method 1 — a 15A charger delivers 15Ah per hour to the battery. The difference is convenience: you must manually connect and disconnect, and there is no consumer unit providing overcurrent protection inside the van.
Safety with Direct Connection
When connecting a charger directly to battery terminals, always connect positive first, then negative. Disconnect in reverse order (negative first, then positive). Ensure the charger is switched off before connecting or disconnecting. Never leave crocodile clips loosely attached — they can slip off, short against metal, and cause sparks or fire.
Advantages
- No permanent installation needed
- The charger is portable — use it in the garage, at a friend's house, anywhere with a plug
- Cheaper than a full shore power installation if you already own a charger
Disadvantages
- Manual connection required every time
- No RCD protection inside the van (relying on the house circuit's RCD)
- An extension lead running to the van is a trip hazard and not suitable for permanent use
- Does not charge while you are at a campsite (no inlet for hook-up cable)
Method 3: Solar Panel at Home
This is unconventional but worth mentioning. If your van is parked in a sunny spot, the roof-mounted solar panels charge the battery during daylight hours without any mains connection at all.
The Reality in the UK
In summer, a 200W panel on a parked van generates 20-40Ah per day. If no loads are running (fridge off, everything switched off), this can keep the battery topped up over days or weeks.
In winter, the same panel produces 5-10Ah per day — not enough to fully charge a depleted battery, but enough to prevent it from self-discharging.
Solar at home is a nice passive top-up, but it is not a substitute for mains charging before a trip. You want to leave with a full battery, and solar alone cannot guarantee that in the UK climate.
What About Charging the Starter Battery?
The starter battery (the one that starts your engine) is separate from the leisure battery and is maintained by the alternator when you drive. If your van sits unused for weeks, the starter battery can go flat — but this is a different problem from leisure battery charging.
Solutions for the starter battery:
- Drive the van regularly (once a week for 20-30 minutes)
- Use a CTEK MXS 5.0 or similar trickle charger (~£60) connected directly to the starter battery
- Install a solar trickle charger (a small 5W-20W panel on the dash, ~£20-£40)
Your DC-DC charger does not work in reverse — it does not charge the starter battery from the leisure battery while parked.
How Much Does It Cost to Charge from Home?
The cost is surprisingly low. Here is the maths for a typical UK household:
- Battery capacity: 200Ah LiFePO4 = 2,560Wh (200Ah x 12.8V)
- Charger efficiency: ~85% (the charger draws more from the mains than it delivers to the battery)
- Energy drawn from mains: 2,560 ÷ 0.85 = 3,012Wh = 3.01kWh
- UK average electricity price (2025): ~24p/kWh
- Cost per full charge: 3.01 x £0.24 = £0.72
That is 72 pence to fully charge a 200Ah battery from empty. Even if you charge weekly, that is under £40 per year. Compare that to campsite EHU fees (£3-£8 per night) and you can see why home charging is excellent value.
Use a Smart Plug for Monitoring
A £10 smart plug (like a TP-Link Tapo) between the wall socket and your charger's adapter cable lets you monitor energy consumption, set charging schedules, and switch off remotely from your phone. It also confirms the charger has finished and is in float mode.
Outdoor Sockets and Weatherproofing
If you plan to charge regularly from home, consider installing a weatherproof outdoor socket near your parking spot:
- A 13A RCD-protected outdoor socket costs about £20-£40 for the unit plus an electrician's time to install (typically £50-£100).
- Mount it at a convenient height on the house wall or garage.
- Use an IP66-rated socket with a closing cover.
- This eliminates trailing cables through doors and windows.
Alternatively, many UK homes already have an outdoor socket near the back door or in the garage. Check whether it is RCD-protected before using it for van charging.
Can I Charge from a Car Park at Work?
Technically yes, if you have your employer's permission and access to an outdoor socket. The same adapter cable (CEE to 13A) connects your van's inlet to a standard socket. Charge during working hours and you effectively get free electricity.
Some workplaces with EV charging points may also have 16A CEE sockets — ideal for van charging without an adapter.
However, drawing power from a socket without permission is theft of electricity (under the Theft Act 1968), so always ask first.
Plan Your Home Charging Setup
Use our free calculator to see exactly how long home charging takes with your battery size and charger rating, and how it fits with your other charging sources.
Frequently Asked Questions
Can I leave the charger connected permanently?
Yes, if it is a smart charger with a proper float stage. Chargers like the Victron Blue Smart IP22 reduce to a trickle when the battery is full and maintain it at the correct float voltage indefinitely. Leaving a good charger connected for weeks will not overcharge or damage the battery.
Will charging damage my household wiring?
No. A typical battery charger draws 300-550W from the mains — less than a microwave. A standard UK 13A ring main handles up to 3,000W per socket. There is no risk to your household wiring.
Do I need a special charger for lithium batteries?
Yes. A charger must have a LiFePO4 profile to charge lithium batteries safely. This profile uses 14.2-14.6V bulk/absorption voltage and 13.5V float voltage, and it does not apply an equalisation charge (which would damage lithium cells). Most modern smart chargers (Victron, NOCO, CTEK) include a LiFePO4 setting.
How often should I charge before a trip?
Charge the night before you leave. A full battery gives you maximum flexibility on arrival. If the van sits unused for more than two weeks, a monthly top-up charge is good practice to prevent the battery from dropping below 50% SoC (which reduces the lifespan of LiFePO4 cells if sustained over long periods).
Can I charge through a window or under a door?
Do not trap a cable under a door or through a window. The pinch point damages the insulation over time, creating a shock and fire risk. Route the cable through an open door or window, or better yet, use an external socket. If you must pass through a gap, use a purpose-made flat cable designed for the job (about £15-£20).
What if I live in a flat with no outdoor socket?
This is more challenging. If your van is parked on the street, you cannot safely run a cable from your flat. Options include:
- Driving the van regularly to charge via the DC-DC charger
- Using solar to maintain the battery while parked
- Finding a friend or family member with a driveway and an outdoor socket
- Visiting a campsite with EHU for an overnight charge occasionally
- Using a portable generator (noisy and expensive, but functional)
If your van is in a shared car park, ask the management about access to a socket.