Complete build
The Full-Time Van Life Power Build
The build for people who do not just camp in their van, they live in it. 600W of solar, a 300Ah lithium battery, a 2000W inverter, and a DC-DC charger so your engine tops you up as you drive. It runs a fridge, your electronics, and a work-from-anywhere setup day in and day out, without you ever thinking about rationing power.
Who this is for
This build is for the full-timer. If your van is your home, you work from the road, and you need power you can count on every day, this is your system. It is a clear step up from the Minimalist Van Power build, which is sized for weekends and devices. Where the minimalist setup is one panel and one battery, this one uses three panels and three batteries, adds a big inverter, and uses your engine to charge while you drive. It is the difference between a power supply for a trip and a power supply for a life.
What it powers
Day to day, this setup runs a 12V compressor fridge around the clock, LED lighting, roof fans, a water pump, and all your charging. For working on the road it easily handles a laptop, a monitor, a router, and phone charging through the day. Through the 2000W inverter it also runs a coffee maker, a blender, or power tools, one at a time. It is not sized for air conditioning or all-day high-draw appliances, but for comfortable full-time van living it covers nearly everything you will reach for.
Complete parts list
| Part | Recommended pick | Why | Get it |
|---|---|---|---|
| Solar panels | 3 x Renogy 200W monocrystalline panels (600W) | 600W on the roof keeps a 300Ah battery topped up even when you run a fridge and electronics every single day. | Check Price |
| Battery | LiTime 12V 100Ah LiFePO4 (x3 for 300Ah) | Three 100Ah batteries in parallel give you 300Ah of usable lithium. Each carries roughly a 100A continuous BMS, so the bank can supply about 300A provided the maker permits parallel use and the interconnects are equal length so the three share current evenly. A 2000W inverter pulls close to 200A at 12V. That matters because some single 200 amp-hour batteries ship a 100A BMS and will trip under that inverter at full load, while others ship a 200A BMS and are fine. Check the BMS continuous rating on the exact model you buy, not the amp-hours. | Check Price |
| Charge controller | Victron SmartSolar MPPT 100/50 | 600W at a real charging voltage of 13.6 to 14.4V is roughly 41 to 44A, inside the 100/50's 50A rating and beyond the 30A a 100/30 can pass. Size the cable and fuse between the controller and the battery for the controller's full 50A output and the fuse its manual specifies, not for the 44A your array happens to make, because that circuit has to survive the controller at maximum. | Check Price |
| Inverter | Renogy 2000W pure sine wave inverter | 2000W of clean power runs a laptop, a coffee maker, a blender, or power tools, one at a time, for working on the road. | Check Price |
| Alternator charging | Renogy 40A DC-DC charger | Uses your engine to safely charge the house battery while you drive, so you stay powered through cloudy stretches. | Check Price |
| Wiring & fuses | Heavy-gauge wiring + fuse kit | Daily heavy loads need thick cable and the right fuses. This kit ties the whole system together safely. | Check Price |
Wiring overview
Skill level: Intermediate. Install time: A long weekend, or a couple of unhurried days.
Want to swap parts?
Every part above links to a deeper roundup so you can pick a different brand or size to fit your van and budget.
- Other panels: best portable folding solar panels
- Other batteries: best 12V LiFePO4 batteries
- Other inverters: best inverters for off-grid solar
- Other controllers: best MPPT charge controllers
- 200W and 400W matched bundles: best campervan solar kits
Frequently Asked Questions
How is this different from the Minimalist Van build?
The Minimalist Van Power build uses 100W of solar and a 100Ah battery, sized for weekends and devices. The Classic 400-watt RV build steps up to 400 watts and 200 amp-hours for regular trips. This full-time build reaches 600W and 300Ah, then adds a 2000W inverter and DC-DC charging for daily life and work on the road.
Can I really work from the road on this?
Yes. 300Ah of lithium and 600W of solar comfortably run a laptop, monitor, router, and phone charging all day, plus a 12V fridge and lights. The 2000W inverter handles a coffee maker or a blender between work sessions. As long as you are not running an air conditioner, this build keeps a remote worker powered.
Why add the DC-DC charger if I have 600W of solar?
Because full-timers cannot afford to run low. Solar alone struggles through a week of rain or in shady, wooded campsites. The DC-DC charger lets your alternator safely refill the lithium battery whenever you drive, which turns a string of cloudy days from a problem into a non-issue.
Is 300Ah enough to live on full-time?
For most full-timers, yes. 300Ah of usable lithium runs a compressor fridge around the clock, plus lights, fans, a water pump, and all your charging, with headroom left over. The three batteries also provide about 300A of combined continuous BMS capacity for the inverter, assuming equal-length interconnects so they share current evenly. Watch the BMS rating rather than the amp-hours when you shop: some 200 amp-hour batteries ship a 100A BMS, which will trip under a 2000W inverter at full load, and others ship 200A and are fine. If you run a lot of heavy loads or park in shade for days, you can add another 100Ah battery in parallel later.
How hard is this to install myself?
It is a real project, a step up from the minimalist build. The cable is heavier, there are more connections, and the DC-DC charger ties into your engine wiring. A careful beginner can absolutely do it over a long weekend. Fuse every positive run, match your cable gauge to the loads, and double-check before you power up.