RV & Travel-Trailer Power 2026: A Towable Backup That Replaces Shore Power
If you tow a travel trailer, fifth wheel, or toy hauler, your power needs look nothing like a built-out van. You've got a 30A (sometimes 50A) shore-power connection, an RV fridge, maybe a roof AC, and a battery bank that's often undersized for real boondocking. A portable power station slots in as silent, fume-free backup — and for many setups, a full shore-power replacement. Here's the RV travel-trailer power plan for 2026.
1. Trailer power is a different beast
- Bigger loads. A trailer roof AC can pull 1,200–1,500W starting; a residential-style RV fridge adds more. Van builds rarely run these.
- Shore-power habit. You're used to plugging into 30A at the site. A station lets you skip the pedestal entirely.
- Tow vehicle separation. Unlike a van, your "house" detaches — so the battery must live with the trailer, not the truck.
2. What a station can and can't do
| Load | RIVER 3 / DELTA 3 | DELTA 3 Max | DELTA Pro 3 |
|---|---|---|---|
| Lights, water pump, USB | Yes | Yes | Yes |
| RV fridge (12V) | Hours | Half-day+ | Days |
| Microwave (1,000W) | No | Brief | Yes |
| Roof AC (1,300W+) | No | No | With extra battery |
For the AC, pair a DELTA Pro 3 with expansion batteries, or run the AC off a generator and everything else off the station. See the van-life guide for smaller-rig ideas you can borrow.
3. Build your towable kit
- Essentials only (weekend trips): a DELTA 3 Max covers lights, pump, fridge, and device charging comfortably.
- Boondocking baseline: the DELTA Pro 3 with an extra battery runs the trailer's 12V systems for days.
- Max independence: a DELTA 3 Max Plus scales capacity for longer off-grid stays.
- Recharge anywhere: add a solar panel and top up at the site or while parked.
4. Solar for the trailer
Trailers have roof real estate for panels, but a portable 400W panel is simpler and adjustable. A DELTA Pro 3 + 400W keeps the 12V systems alive through multi-day stays — the off-grid guide has full sizing.
5. Install tips
- Mount or secure the station. Towing shakes; strap it down in a cabinet or bay.
- Keep it ventilated. Don't seal it in a closed compartment while discharging hard.
- Pre-charge at home. Arrive with a full bank, then let solar maintain it.
- Use 12V where possible. Run the RV fridge and pump on DC to stretch runtime.
6. FAQ — trailer power
Can a station replace my shore power?
For lights, water, fridge, and devices — yes, a DELTA Pro 3 does it silently. For the roof AC, you'll want extra batteries or a generator assist.
Will it run my RV fridge?
A 12V RV fridge draws a few hundred watts; a DELTA 3 Max runs it half a day, a DELTA Pro 3 for days. Check your fridge's exact amps on its label.
Power the trailer, lose the generator
Build a silent DELTA Pro 3 + solar kit for your trailer. New, dealer-backed, 5-year warranty, US support.
Shop Trailer Power →Livvoltpower is an authorized EcoFlow dealer. Every unit ships with a 5-year warranty and US-based support. Verify your trailer's AC and fridge loads against station output before relying on it for shore-power replacement.