A portable power station won't replace a built-in house battery bank in a big rig. For trailers, small RVs, and anyone tired of generator hours, though, it's a quiet, no-install way to run the essentials.
What an RV usually needs to run
| Load | Typical draw* | Notes |
|---|---|---|
| Furnace blower (propane furnace) | Often 12 V DC, a few amps | Usually runs on the coach battery, not 120 V. Check yours. On cold nights it's the load that drains batteries. |
| 12 V compressor fridge | ~15–30 W average | Use the unit's 12 V port to skip inverter losses. |
| Residential fridge (120 V) | ~1–2 kWh/day | Check the EnergyGuide label. Needs a unit with real surge headroom. |
| Roof fan | ~10–40 W | Usually 12 V. |
| CPAP | ~30–90 W | The heated humidifier roughly doubles the draw. Many CPAPs offer a DC cord. |
| Microwave / coffee maker | 900–1,500 W | Short bursts. Needs 1,500–1,800 W continuous output. |
| Rooftop A/C | ~1,300–1,800 W running, higher to start | Not realistic for overnight use on any unit in our table. |
Three common RV setups
1. "Quiet hours" helper (~700–1,000 Wh)
Runs devices, lights, fans and a CPAP overnight when generators aren't allowed. Many campgrounds and public lands restrict generator hours (check the specific campground's rules). Candidates: BLUETTI AC70 or Jackery Explorer 1000 v2.
2. Weekend boondocking (~1,000–1,200 Wh + solar)
Adds coffee or microwave bursts and a 12 V fridge. Look for 1,800 W output and strong solar input: BLUETTI AC180 (500 W solar) or EcoFlow DELTA 3 Plus (2 × 500 W solar).
3. Residential fridge, multi-day (~2,000 Wh+)
A 120 V residential fridge alone can use 1–2 kWh/day. You'll want a 2 kWh-class unit such as the Jackery Explorer 2000 v2, plus daily solar or a generator top-up.
Recharging on the road
- Solar: As a rough planning figure, a panel yields its rated watts × "peak sun hours" × 0.7–0.8 after real-world losses. Peak sun hours vary by location and season. The NREL PVWatts calculator gives location-specific estimates. Example: 200 W × 5 h × 0.75 ≈ 750 Wh/day.
- Generator: Fast AC charging (950–1,500 W on several of these units) means a short generator run during allowed hours can refill most of the battery.
- Tow vehicle / alternator: A 12 V socket delivers only around 100–120 W, which is slow. Dedicated alternator chargers (e.g. EcoFlow's 800 W option) are much faster but need proper installation.