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The Trafic is a mid-size van that punches above its weight for weekend campers. But the compact dimensions mean every electrical component needs careful placement. The 120A alternator is smaller than larger vans, which limits DC-DC charger sizing.
The Trafic's starter battery is in the engine bay, passenger side. Cable routing to the rear uses the driver-side sill channel — remove the plastic trim and you'll find factory wiring with room to add 1-2 cables. Ground points: chassis bolt behind the rear bench mount is the cleanest spot. The Trafic's 2.0 dCi has a smart alternator on 2019+ models — you need a DC-DC charger, not a relay.
⚡ Expert tip
The Trafic has a factory-installed secondary battery bracket on some commercial models (check under the passenger seat). If yours has it, you can mount a leisure battery there without any custom fabrication — saves hours of work.
Example calculation for your setup
Results based on a typical use case
| Appliance | Power | Usage/day | Wh/day |
|---|---|---|---|
| Compression fridge | 45W | 24h | 1080 |
| LED lighting | 20W | 4h | 80 |
| Water pump | 30W | 0.5h | 15 |
| Phone charging | 15W | 2h | 30 |
| Daily consumption | 1205 Wh | ||
Recommended LiFePO4 battery
126 Ah
(80% depth of discharge)
Recommended AGM battery
201 Ah
(50% depth of discharge)
Recommended solar panels
302 Wc
4h average sun hours
Recommended inverter
No 220V appliances — no inverter needed
Adjust these values with the calculator below
VANPOWERCALC PROYOUR ENERGY PROFILE
YOUR ENERGY PROFILE.
This document contains the sizing of your future electrical installation, calculated based on your appliances.
Minimum Daily Consumption
0 WH / DAY
Inventory:
SYSTEM SIZINGPage 2
Battery
To guarantee 0WH without damaging your bank (80% max discharge):
0 AH
LiFePO4 12V
Solar
Minimum power required to recharge your consumption:
0 W
via MPPT
220V AC
Maximum power (with 25% safety margin).
0 W
No Need
Safety & CablingPage 3
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
FUSIBLE
FUSIBLE
BOÎTE À FUSIBLES 12V
Pompe, Leds, Frigo...
CONVERTISSEUR 220V
NON REQUI
PRO GEARPage 4
SHOPPING LIST
Where to find this equipment? Here is the community-approved selection.
12V 6-way Fuse Box
Mandatory protection
Digital Multimeter
Test your connections
Heavy Duty Crimping Tool
For perfect lugs
Heat Shrink Tubing
Insulation and safety
GENERATED BY VANPOWERCALC PRO - UNLIMITED.
About this tool
Space is the real constraint. The Trafic L1 (short wheelbase) has almost no room for a large battery box. Most builds put the battery under the rear bench or in a custom box behind the driver seat. A 100Ah LiFePO4 is the practical maximum without losing significant living space. Some builders mount a slim battery vertically against the rear panel using a custom L-bracket. For solar, the Trafic's curved roof works better with flexible panels, though rigid panels on low-profile brackets fit the L2 (long wheelbase) model. With a 120A alternator, keep your DC-DC charger at 20A — a 30A unit at full draw plus the van's own systems would push the alternator to 85%+ load, which isn't sustainable in hot weather.
Frequently asked questions
Does the Renault Trafic have a smart alternator?▼
Models from 2019+ (facelift) with the 2.0 dCi engine have a smart alternator. Pre-2019 1.6 dCi models are conventional. Check with a multimeter at idle — fluctuating voltage (12.4-14.8V) means smart alternator.
What battery fits a Renault Trafic conversion?▼
100Ah LiFePO4 is the practical maximum for most Trafic builds. Standard dimensions (330×175×215mm) fit under the rear bench. 200Ah requires a custom mounting solution and sacrifices living space.
What size DC-DC charger for a Trafic?▼
20A maximum. The Trafic's 120A alternator is smaller than a Sprinter or Transit. A 30A DC-DC charger would overload it on hot days when the A/C compressor is also running.
Rigid or flexible solar panels on a Trafic?▼
The L1 (short) roof is too curved for most rigid panels without custom brackets. Flexible panels glue directly and add no height — important if you use car parks with height barriers. The L2 (long) roof has a flatter center section where rigid panels on low-profile rails work.
Is the Trafic big enough for full-time van life electrical needs?▼
For a minimalist or couple doing weekends: absolutely. For full-time digital nomad life: it's tight. The limited battery space (100Ah) and solar area (200W max) mean you'll need shore power or regular driving to supplement. Consider a Transit or Sprinter for heavy electrical needs.