YOUR ENERGY PROFILE.
This document contains the sizing of your future electrical installation, calculated based on your appliances.
Inventory:
Battery
To guarantee 0WH without damaging your bank (80% max discharge):
Solar
Minimum power required to recharge your consumption:
220V AC
Maximum power (with 25% safety margin).
12V Cable Sizing Guide
Use this professional reference table to select the correct gauge (mm²) for your cables. For 12V in a van, the maximum tolerated voltage drop is 3%. Always use multi-stranded flexible automotive wire.
| Current (A) | Round trip < 2m | Round trip 4m | Round trip 6m |
|---|---|---|---|
| 5A (LEDs, USB) | 1.5 mm² | 2.5 mm² | 4 mm² |
| 10A (Fridge, Pump) | 2.5 mm² | 4 mm² | 6 mm² |
| 20A (Heater) | 4 mm² | 10 mm² | 10 mm² |
| 50A (DC/DC Booster) | 10 mm² | 16 mm² | 25 mm² |
| 100A (Inverter) | 25 mm² | 35 mm² | 50 mm² |
Fuse Sizing
The fuse protects the wire, not the appliance. Always place it as close to the power source as possible (battery or busbar).
- Wire 1.5 mm² → Max fuse 10A
- Wire 2.5 mm² → Max fuse 20A
- Wire 4 mm² → Max fuse 30A
- Wire 6 mm² → Max fuse 40A
- Wire 10 mm² → Max fuse 60A
SCHÉMA ÉLECTRIQUE
PANNEAUX SOLAIRES
0W
REGULATEUR MPPT
BATTERIE AUXILIAIRE
0 Ah
Lithium LiFePO4
BOÎTE À FUSIBLES 12V
Pompe, Leds, Frigo...
CONVERTISSEUR 220V
NON REQUI
SHOPPING LIST
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Comparison table
| Device | Wattage (W) | Amps at 12V (A) |
|---|---|---|
| Gaming Laptop | 120 - 180W | 10 - 15A |
| Desktop (RTX 3060) | 250 - 350W | 21 - 29A |
| Starlink Mini | 25 - 40W | 2 - 3.5A |
| 27-inch LED Monitor | 30 - 50W | 2.5 - 4A |
About this tool
Yes, You Can Game in a Van — Here's the Power Math
Running a gaming PC in a van is completely doable, but it demands serious electrical planning. The difference between a failed gaming van and a successful one almost always comes down to power design.
The hard truth: a mid-range gaming PC (RTX 4070 + AMD Ryzen 7) draws 250-400W under load. At 400W for 4h of gaming: 1,600Wh = 133Ah from your 12V battery. Running daily, that's 1,600Wh/day — more than most weekend van builds produce in total.
Power Consumption by Gaming Setup
| Setup | Idle | Gaming Load | 4h Session |
|---|---|---|---|
| Gaming laptop (RTX 4060) | 30-45W | 70-120W | 280-480Wh |
| Mid-range desktop (RTX 4070) | 80-120W | 200-350W | 800-1,400Wh |
| High-end desktop (RTX 4090) | 120-200W | 350-600W | 1,400-2,400Wh |
| Cloud gaming (GeForce Now) | 10-15W | 10-15W | 40-60Wh |
The gaming laptop is the clear winner for van life. The RTX 4060 laptop delivers ~85% of desktop performance at 20-30% of the power consumption.
What Electrical System Can Support Gaming?
For a gaming laptop (4h session = ~400Wh/day):
- Minimum: 200Ah LiFePO4 + 200W solar + DC-DC charger
- Comfortable: 300Ah LiFePO4 + 400W solar + 30A DC-DC charger
For a desktop gaming rig (4h session = ~1,200Wh/day):
- Minimum: 400Ah LiFePO4 + 600W solar + 30-60A DC-DC + 2,000W pure sine inverter
- Realistic: 600Ah LiFePO4 + 800W solar + 60A DC-DC + 3,000W inverter
The inverter is critical: a gaming desktop running at 350W requires a pure sine wave inverter rated at 800W minimum (2× safety margin for startup load).
Keeping Thermals in Check
A gaming PC in a van generates significant heat. Thermal management is as important as power:
- Keep ambient temp under 35°C for stable performance
- Orient PC to use natural airflow from MaxxFan extraction
- Consider water cooling for the GPU — quieter and more heat-efficient
- Park in shade during summer gaming sessions
Cloud Gaming: The Smart Alternative
Xbox Game Pass Ultimate + xCloud or GeForce Now delivers console-quality gaming at just 10-15W (tablet or mini PC). The quality isn't quite local gaming on RTX 4090, but for van life where every watt matters, cloud gaming lets you game on 100Ah LiFePO4 with 100W solar — a $500 electrical system instead of $3,000+.
Expert tip: Don't size your electrical system "just enough" for gaming. Always add 30-40% headroom. Your GPU under load in a hot van in summer can spike to 20% above rated TDP. Use the VanPowerCalc electrical calculator to size your system correctly for your exact gaming rig.