Imagine the second night of your weekend: the fridge is humming, your phone is charging, and you’re not doing battery math in the dark. This page does that math once, ahead of time, so you can enjoy the trip.
If the 12V compressor fridge is the point of your weekend, a ~1000Wh-class portable power station is the match (examples: Jackery Explorer 1000 v2, ALLPOWERS P1800 or BLUETTI Elite 100 V2) so the cooler, phones, and a fan still have margin after inverter losses. A ~300Wh-class station (examples: Jackery Explorer 300 or BLUETTI Elite 30 V2) is for electronics + lights — with a small fridge, treat it as one mild night at best or a drive-day top-up, not a two-night hot-weather hold.
This page is the fridge-load deep dive. For general phone/fan/CPAP math without a cooler, use 300Wh vs 1000Wh for weekend car camping. Soft cooler vs buying a compressor fridge: soft cooler vs 12V fridge.
Fridge pick: BODEGA G18T 18L / 19 qt 12V fridge (affiliate), or browse BODEGA portable fridges. Not sure which size? See best 12V fridge for SUV car camping (and what power station runs it).
In-stock picks (affiliate, checked October 9, 2026):
- ~1000Wh class: Jackery Explorer 1000 v2 (1070Wh) · ALLPOWERS P1800 (~1024Wh) · BLUETTI Elite 100 V2 (1,024Wh) · ALLPOWERS power stations for refrigerators
- ~300Wh class: Jackery Explorer 300 (293Wh) · BLUETTI Elite 30 V2 (288Wh). ALLPOWERS’ ~300Wh R600 was sold out when we checked.
- Browse: Jackery power stations
Quick answer
| Weekend plan | Power class | Why |
|---|---|---|
| Phones, lights, short fan — no fridge | ~300Wh | Enough with buffer; see Wh comparison guide |
| Fridge only while driving / short camp stops | ~300Wh or car 12V | Station is backup, not the fridge’s sole supply |
| Fridge overnight × 1–2 nights, mild weather | ~1000Wh | Compressor cycling adds up |
| Fridge + fan + cameras, hot weather, little driving | ~1000Wh minimum + solar or drive recharge | Duty cycle rises with ambient heat |
| Fridge + humidified CPAP | Bigger than 1000Wh or DC-specialized CPAP kit | Do not guess — measure your CPAP watts |
What a compressor fridge actually draws
Portable 12V fridges are not a steady 40–60 W all night. They cycle: compressor on (tens of watts) then off. Average Wh depends on setpoint, ambient temperature, how often you open the lid, and shade.
These are the same planning ranges used on every TrailCab fridge page, split by fridge size because a 50L dual zone and an 18L single zone are not the same load. They assume a 35–40°F setpoint, a pre-chilled box and 12V DC power. Daily Wh ≈ rated input watts × compressor duty cycle × 24 h: small fridges list ~45–60 W rated input and run ~15–30% of the time in mild weather, 30–45%+ in heat; bigger and dual-zone boxes run more.
| Fridge size | Mild (60–75°F), shade | Hot (85°F+), sun, frequent opens |
|---|---|---|
| Small: 15–25L single zone | ~6–13 W average · ~150–300 Wh/day | ~13–21 W average · ~300–500 Wh/day |
| Medium: 26–40L single or dual zone | ~10–19 W average · ~250–450 Wh/day | ~19–31 W average · ~450–750 Wh/day |
| Large: 45–60L dual zone | ~15–25 W average · ~350–600 Wh/day | ~25–42+ W average · ~600–1,000+ Wh/day |
What that means in nights: a ~1000Wh station gives roughly 850–900 Wh usable on DC. That is two mild days for a small fridge with room for phones and a fan, about two mild days for a medium fridge with nothing else, and roughly one day for a large dual zone. A ~300Wh station (about 250 Wh usable) is one mild day for a small fridge at best. Hot weather cuts all of these, so plan drive or solar recharge.
Always prefer your fridge’s Wh-per-day estimate or a cheap USB-C / 12V inline meter over influencer round numbers. TrailCab’s rule: size the station for your worst expected day × nights, then add ~15–20% for conversion loss and “oops.”
300Wh vs 1000Wh with a fridge in the mix
~300Wh-class (Jackery Explorer 300 / BLUETTI Elite 30 V2)
Works when:
- Fridge is powered from the vehicle while driving and only sips the station at camp for phones
- You accept the fridge may warm up overnight without car support
- Trip is one cool night with a small (15–25L), pre-chilled box and minimal opens (~150–300 Wh/day vs ~250 Wh usable)
Fails when:
- Hot-weather two-night hold on station alone
- Fridge + all-night fan + camera charging
- You expected “set and forget” like home kitchen power
Picks: Jackery Explorer 300 (jackery.com lists 293Wh, 300W inverter, 500W surge; in stock October 2026) or BLUETTI Elite 30 V2 (bluettipower.com lists 288Wh, 600W). The ALLPOWERS R600 (~299Wh) was sold out when we checked; we will re-add it if it returns.
~1000Wh-class (Jackery Explorer 1000 v2 / ALLPOWERS P1800 / BLUETTI Elite 100 V2)
Works when:
- Fridge is the primary cold chain for a mild weekend with a small or medium fridge
- You still want phones, lights, and a modest fan
- You can strap a ~20+ lb brick in the cargo bay without crushing the mattress plan
Still plan recharge if:
- Multi-day boondocking in heat
- High setpoint gap (deep freeze + hot ambient)
- You also run AC appliances off the inverter
Live link: ALLPOWERS P1800 (~1024Wh) · BLUETTI Elite 100 V2 (1,024Wh, 1,800W) — browse ALLPOWERS power stations for refrigerators. Jackery option: Explorer 1000 v2 (jackery.com lists 1070Wh, 1500W output, LiFePO₄ rated for 4,000 cycles).
DC 12V vs AC outlet (efficiency)
| Path | Pros | Cons |
|---|---|---|
| Fridge on 12V / car socket from station DC | Usually less conversion loss | Cable length, cigarette-port current limits, voltage drop |
| Fridge on AC via station inverter | Familiar plug | Inverter overhead; check continuous watts + surge |
| Fridge on vehicle while engine/alternator runs | Saves station Wh for camp | Idle/engine rules; don’t drain the starter battery at camp |
Prefer the fridge’s native 12V input into the station’s DC outlet when the station supports the amperage. If you must use AC, budget extra Wh and confirm the compressor’s startup surge fits the station’s surge rating.
SUV packing notes (fridge + station)
- Strap both fridge and station — neither is a soft pillow in a panic stop.
- Keep the station’s vents clear; do not bury under quilts while charging.
- Shade the fridge (reflectix / towel / cargo shadow); every degree you fight ambient costs Wh.
- Pre-chill at home on wall power so day-one duty cycle is lower.
- Cold reduces battery effective capacity — keep LiFePO4 stations inside the cabin overnight in winter.
- Leave a walk path; a fridge + 1000Wh brick + mattress is a tetris problem — see beginner sleep setup.
Buy checklist (before you click)
- Fridge model’s typical Wh/day or average watts (manual, listing, or meter).
- Nights without reliable drive recharge.
- Other loads (fan, CPAP, camera) on the same station.
- Station Wh, continuous W, surge W, and DC outputs.
- Weight/volume fit with your mattress plan.
- Recharge plan: drive days, solar input rating, or campground outlet.
If steps 1–3 already exceed ~250 Wh per day, do not force a 300Wh-class brick to be a fridge battery.
Decision
| You… | Do this |
|---|---|
| Mostly soft cooler + ice, rare meat | Skip the station jump — ice + soft-cooler guide |
| Want fridge weekends, mild climate, drive between nights | ~1000Wh-class; top up while driving |
| Hot climate, 2+ nights, fridge is non-negotiable | ~1000Wh-class + solar or larger; measure real draw |
| Only phones/lights | ~300Wh-class is enough — Wh comparison |
Shop: ALLPOWERS fridge-ready power stations · Jackery power stations · BLUETTI Elite 100 V2 · Fridge: BODEGA G18T.
FAQ
Will a 300Wh station run my fridge all night?
Often no in warm weather. A ~300Wh station has ~250 Wh usable; a small fridge uses ~150–300 Wh per mild day and ~300–500 Wh in heat. One mild night with a pre-chilled small fridge sometimes works; do not plan a hot two-night trip on ~300Wh alone.
Is 1000Wh enough for fridge + CPAP?
Maybe for CPAP without humidifier; often not for both fridge and humidified CPAP. Check continuous watts and nightly Wh for your machines. When in doubt, separate power plans.
Can I charge the station from the SUV 12V socket?
Yes, slowly. Fine for topping up on drive days; bad as the only way to refill a drained 1000Wh unit overnight at camp.
Do I need solar?
Nice for multi-day dry camping. Panel “rated watts” are optimistic in shade and low sun angles. Size solar as a helper, not a fantasy full refill every afternoon.
Which 12V fridge does TrailCab suggest?
A small single-zone compressor fridge (~18–25L) for most SUV weekends. Our fridge pick is the BODEGA G18T (affiliate). Size-by-size draw and power tiers: best 12V fridge for SUV car camping.