What Size Portable Power Station Do You Need for Camping? (2026 Guide)
Quick answer: Most car campers need 500–1,000Wh for a weekend trip with a laptop, lights, and phone charging. Add a 12V compressor fridge or a CPAP machine and that number jumps to 1,000–2,000Wh. Run the formula (watts × hours ÷ 0.85, plus a 20–30% buffer) and you'll land on a specific watt-hour target before you look at a single product.
You searched "what size portable power station do I need" because the product listings gave you numbers (500Wh, 1,500Wh, 2,000W inverter) without telling you which one maps to your actual trip. That confusion is the real problem, and it's fixable with one formula and a device list. Understanding the difference between watts vs watt-hours is the first step — once that clicks, the rest of the sizing math follows quickly. This guide walks the math first, then maps your number to a capacity band, then shows you exactly which TerrainVault-stocked Goal Zero Yeti models cover each band. By the end you'll have a watt-hour target and a short product list rather than a longer collection of specs to compare on your own.
What's the difference between watts and watt-hours, and why does it determine your size?
Short answer: watts measure the rate at which a device draws power right now; watt-hours measure how much total energy a battery can store and deliver over time. Buying a power station without understanding both is the single most common reason campers end up with a unit that's either dead by noon or twice as heavy as it needs to be.
Think of it like a garden hose. Watts are the flow rate; watt-hours are the tank size. A device that draws 40W for 6 hours consumes 240Wh. A laptop pulling 60W for 2 hours uses 120Wh. A phone charging at 20W for 2 hours adds another 40Wh. Add those together and you get 400Wh — the amount of stored energy you need to cover those three devices in one session.
The listed capacity on a power station is the gross number. The amount you can actually use is lower. Conversion losses inside the inverter (the component that turns battery DC into the AC your laptop or CPAP expects) eat roughly 15% of stored energy. The working rule: usable Wh is approximately battery Wh × 0.85. A 500Wh station realistically delivers around 425Wh to your devices. A 1,000Wh station delivers around 850Wh. Size to the usable figure, not the label.
The inverter's watt rating (output wattage) is a separate spec from capacity. It tells you the maximum power the station can push at one moment, which matters for devices with high startup surge, but it is not a substitute for knowing your battery capacity in watt-hours. A station with a 2,000W inverter and 300Wh of capacity can run a coffee maker briefly but will be dead in minutes. Match both specs to your actual load.
How do you calculate exactly how many watt-hours your camping trip actually needs?
Most buyers find that the formula takes under five minutes once you have a device list in hand: multiply each device's wattage by the hours per day you'll run it, sum the results, divide by 0.85 to account for inverter losses, then multiply by 1.2–1.3 as a safety buffer. That final number is your minimum station capacity target.
The formula: Daily Wh = (watts × hours per device) summed, divided by 0.85 for inverter losses, then multiplied by 1.2–1.3 for a safety buffer. For a two-day trip, multiply by 2 before adding the buffer. A weekend family trip with a laptop at 60W for 2 hours, two phones at 20W for 2 hours each, and LED camp lights at 10W for 4 hours totals roughly 220Wh of raw device load per day. Run that through the formula: 220 ÷ 0.85 gives approximately 259Wh, and multiplying by the 1.3 buffer gives approximately 336Wh per day. Over two days that's a 672Wh target. A 700Wh station covers it comfortably; a 500Wh station is tight.
Real families use more. Research on typical four-person weekend camping loads puts estimated daily use at around 675 watt-hours before losses and buffer, landing closer to 1,030Wh as the target when you apply the full formula. If your trip includes a 12V compressor fridge (roughly 50W × 8 hours at a theoretical maximum, or about 134Wh at a realistic 35% duty cycle) or a CPAP machine (65W × 8 hours up to 520Wh, or about 240Wh with the humidifier off), those numbers shift the math significantly. A quick honest estimate for a crew running power-hungry devices: 500Wh/day × 2 days × 1.3 = a 1,300Wh target.
The most common sizing mistake is calculating only run time without accounting for inverter losses, then rounding down to the next capacity tier to save money. The 20–30% buffer exists for cold nights (lithium loses capacity in the cold), aging cells, and the devices you forgot to include in the first pass. Round up, not down.
Which capacity band matches your trip?
In practice, four bands cover nearly every camping scenario: 150–300Wh for solo overnighters with phones and lights only; 500–1,000Wh for weekend car camping without a fridge; 1,000–2,000Wh for crews running a compressor fridge or CPAP; and 3,000Wh-plus for extended base camps. The band tells you where to shop; the watt-hour formula tells you exactly where in the band to land.
150–300Wh covers phone charging, LED lights, and a Bluetooth speaker for one to two nights. This is a trail runner's kit or a packable unit for a solo hiker who wants to top off devices at the trailhead. No fridge, no CPAP, no laptop for extended work. The Goal Zero Yeti 150 sits at the entry point of this range, and the Yeti 300 (297Wh, 13.7 lbs) sits at the top.
500–1,000Wh is the weekend car camping band. It covers a laptop, lights, a small fan, and a camera battery charger alongside two or three phones. This handles most couples and small families on a two-night trip without a compressor fridge or CPAP. The Goal Zero Yeti 500X handles the lower end; the Yeti 700 (677Wh) handles a more honest family weekend load with margin to spare.
1,000–2,000Wh is the band for anyone running a 12V compressor fridge, a CPAP machine, or camping with a crew of four or more for two to three nights. A 1,000Wh station at realistic efficiency delivers around 850Wh, which is tight for a fridge-and-CPAP combination over two nights, so the Goal Zero Yeti 1500 (1,505Wh) is the honest pick here rather than a 1,000Wh unit.
3,000Wh+ is base camp, van build, or week-long off-grid territory. Power tools, a full-size compressor fridge, multiple CPAPs, drone charging, and group lighting all fit here. The Goal Zero Yeti PRO 4000 (3,994Wh) is the top of TRV's range and expandable to 20kWh via Tank PRO batteries. Not a first-trip purchase, but the right answer for extended expeditions. Browse the full power station lineup to compare capacity tiers side by side.
What does a 12V compressor fridge or a CPAP machine actually cost you in watt-hours per night?
The honest answer is less than most buyers fear, but only if you use realistic duty-cycle figures rather than continuous-run math. A 12V compressor fridge at 35% duty cycle costs roughly 134Wh per day; a CPAP with the humidifier off costs about 240Wh per night. Both numbers shift meaningfully with ambient temperature and device settings.
The fridge duty-cycle point is the most important sizing concept most buyers miss. A fridge that draws 40W on average doesn't run continuously. The compressor cycles on to maintain temperature, then shuts off. At a 35% duty cycle, a 40W average draw works out to roughly 134Wh per day, not 960Wh (40W × 24h). A 614Wh battery provides roughly 12 to 20 hours of fridge runtime at moderate ambient temperatures, more in cool weather and less in 95°F desert heat. One catch: fridge compressor startup surge is 3–7× running watts. A fridge that draws 40W running may spike to 280W on startup. Your station's inverter must handle that surge rating, or the fridge won't start.
CPAP machines vary more than fridges. A basic CPAP at a standard pressure setting draws around 30W without the heated humidifier, so 8 hours × 30W = 240Wh per night. Switch on the humidifier and the same machine can reach 65W, pushing the nightly draw to 520Wh. If you're a CPAP user, turn the humidifier off for camping nights when station capacity is tight. The ResMed AirSense 11 and similar modern units have a travel or camping mode for exactly this reason.
The combined load of a fridge and a CPAP on a two-night trip, at realistic efficiency figures, runs 134Wh (fridge per day) plus 240Wh (CPAP per night, humidifier off) for 374Wh per day of anchor loads before phones, lights, or a laptop. That's 748Wh over two nights for those two devices alone. Add the buffer and inverter losses and you're targeting 1,100–1,200Wh. A 1,000Wh station is undersized; the Yeti 1500 is the right unit.
How do the Goal Zero Yeti 300, 500, 700, and 1500 stack up for each camping scenario?
For most use cases, the Yeti 700 is the weekend car camping answer and the Yeti 1500 is the fridge-plus-CPAP answer. The full 6th-generation lineup uses LiFePO4 chemistry across all four capacity tiers, meaning every unit offers 3,000-plus cycles and stable cold-weather discharge performance. Which tier you need follows directly from the watt-hour target the formula gives you.
The Yeti 300 (6th gen) comes in at 297Wh, 13.7 lbs, with a 350W inverter and 600W surge, priced at approximately $349. It is a solo overnighter unit suited to phone, lights, and camera charging, plus maybe a small speaker. It won't run a CPAP through a full night on the standard setting, and it won't run a fridge. Its value is weight and grab-and-go portability.
The Yeti 500 (6th gen) offers 499Wh, 16.1 lbs, a 500W inverter with 1,000W surge, at approximately $499. It covers a couple on a two-night trip without power-hungry devices. Add a laptop and a CPAP (humidifier off) and you're at the limit. The 500W inverter handles most standard camping devices but won't start a compressor fridge that surges past 500W at startup.
The Yeti 700 (6th gen) delivers 677Wh at approximately 20.3–20.9 lbs, with a 600W inverter and 1,000W surge, priced at approximately $699. It earned Outdoor Life's 2026 "Most Reliable" designation and is the sweet-spot pick for most weekend car campers. It covers the realistic 675Wh daily estimate for a family of four with margin, handles laptop plus lights plus phone charging simultaneously, and its 1,000W surge handles most compressor fridges on startup.
The Yeti 1500 (2026) provides 1,505Wh at 52.75 lbs, with a 2,000W inverter and 3,600W surge, charges 0–80% in under 1 hour, carries an IPX4 rating, and is priced at approximately $1,499. This is the fridge-and-CPAP unit. It handles the combined load of both anchor devices across two to three nights, accommodates a full family's devices, and its 3,600W surge rating handles any compressor fridge startup confidently. The IPX4 rating matters in an overlanding context where dust and rain are the default environment.
A note on the portable power station vs generator question that comes up at this price tier: the Yeti 1500 costs roughly the same as a quality inverter generator, runs silently, requires no fuel, and is safe indoors. The generator wins only on total energy capacity for trips longer than a week without solar access. For most overlanding and car camping scenarios, the power station is the cleaner and more practical choice.
| Axis | Goal Zero Yeti 700 | Goal Zero Yeti 1500 |
|---|---|---|
| Capacity (Wh) | 677Wh | 1,505Wh |
| Weight (lbs) | ~20.3–20.9 lbs | 52.75 lbs |
| Inverter / surge watts | 600W / 1,000W surge | 2,000W / 3,600W surge |
| Best trip profile | Weekend car camping, laptop + lights + phones, no fridge | Fridge + CPAP + crew, 2–3 nights, overlanding base camp |
| Approx. price (2026) | ~$699 | ~$1,499 |
| Chemistry / cycle life | LiFePO4, 3,000+ cycles | LiFePO4, 3,000+ cycles, IPX4 rated |
How much does adding solar panels change how many watt-hours you actually need to buy?
Generally, solar recharging can reduce the station size you need to buy by 30–50% on multi-day trips, but only if you're camped in a location with consistent direct sun and you match panel wattage to station capacity. The math is straightforward once you know your peak sun hours and panel efficiency.
Recharge time = station capacity (Wh) ÷ (panel watts × peak sun hours × 0.85). Under ideal conditions, a 1,000Wh station paired with a 200W panel in 5 peak sun hours recharges in approximately 1.18 hours. That's the ceiling, and real conditions are lower. According to NREL's solar resource data, panels yield 60–80% of their rated output in real-world field conditions due to temperature, angle, and shading. Plan on 120–160W of usable output from a 200W panel on a clear day in a good site.
The practical sizing rule: use 100W of solar per 500Wh of station capacity for a single-day turnaround. Scale to 200–300W per 1,000Wh, and 400W or more per 2,000Wh. Goal Zero stations use MPPT (Maximum Power Point Tracking) charge controllers, which continuously adjust the electrical operating point to extract maximum power from connected panels. A basic PWM controller wastes 10–25% of available solar input by comparison, so the controller type matters. For a deeper look at how to pair panels to your station, see our guide to sizing a portable power station.
The key planning constraint is that solar doesn't eliminate battery capacity requirements — it reduces how much you need to carry. If your site is shaded, the recharge math collapses. For base camp setups with reliable south-facing exposure, a Yeti 1500 with 200–400W of solar can sustain indefinite daily loads that would drain the battery alone in two nights. For canyon camps or overcast climates, size the battery as if solar is a bonus rather than a primary source.
What are the FAA carry-on limits for portable power stations, and can you fly with your unit?
Bottom line: the FAA draws the line at 100Wh for unrestricted carry-on, 160Wh with airline approval, and forbidden above 160Wh in the cabin. Almost every useful camping power station exceeds 160Wh. If you're flying to a trailhead, plan to rent locally or ship the unit ahead via ground freight.
The thresholds are firm. According to FAA regulations: units at or below 100Wh need no special approval and fly as standard carry-on lithium batteries. Units between 101Wh and 160Wh require airline approval but are generally permitted if you call ahead. Units above 160Wh are forbidden in passenger aircraft cabins, full stop. They cannot go in checked baggage either, since all spare lithium batteries are cabin-only and the checked hold is always prohibited for loose lithium cells.
In practice, the only genuinely useful camping unit that fits under 100Wh is a phone-and-lights kit, enough for a backpacking trip but not enough for a car camp with a compressor fridge. The Goal Zero Yeti 300 (297Wh) is more than double the 160Wh cutoff. If you're flying to a remote camp, the realistic options are a rental from an outfitter at your destination, shipping the station ahead via ground freight, or driving instead. The FAA limits aren't a sizing consideration for most overland campers — they define a separate category of trip entirely.
One practical note: portable power stations are also safe for indoor use. LiFePO4 chemistry doesn't off-gas toxic fumes under normal operating conditions the way older lead-acid or NMC cells can. Running a Goal Zero Yeti indoors in a cabin or vehicle is not a ventilation hazard. Running a gasoline generator indoors is a serious carbon monoxide risk — that distinction matters when weighing a portable power station vs generator for any enclosed or semi-enclosed camping setup.
Is LiFePO4 chemistry worth the premium over NMC lithium-ion for a camping power station?
Quick take — yes, for any station you plan to use more than a season or two. LiFePO4's 3,000–5,000+ cycle life versus NMC's 500–800 cycles makes the premium straightforward to justify on cost-per-cycle math alone, and the cold-weather safety profile adds a second reason that matters specifically for overlanding use.
LiFePO4 (lithium iron phosphate) cells offer 3,000 to 5,000 or more charge cycles before meaningful degradation, per peer-reviewed electrochemical studies published via MDPI Energy. The Goal Zero 6th-generation Yeti line uses LiFePO4 across its full range. The older Yeti X legacy line used NMC (nickel manganese cobalt) lithium-ion. Those units are still available at discount but carry a warranty of approximately 2 years and a realistic cycle life of 500–800 charges before capacity starts to fall.
Lead-acid batteries, still common in cheaper generator-style units, lose 20–30% of their rated capacity in conversion losses alone, versus 10–15% for lithium-ion chemistry. They're also heavier, require maintenance, and degrade faster in partial-charge cycling. For camping applications they're a poor choice at any price point.
The cold-weather charging rule is the most important LiFePO4 operating constraint to understand. Discharging a LiFePO4 station in cold weather temporarily reduces available capacity, and that reduction reverses once the cells warm up. Charging LiFePO4 below 0°C (32°F) is a different problem: it causes lithium plating on the anode, which is irreversible capacity loss rather than a temporary dip. Modern Goal Zero units include a Battery Management System (BMS) that blocks charging when cell temperature is too low. If the unit won't accept a charge on a cold morning, that's the BMS protecting the cells. Warm the station before connecting it to solar or wall power.
What else should you know about sizing a portable power station for camping?
The honest answer is that most remaining questions come down to three topics: appliance compatibility, power bank versus power station confusion, and cold-weather operation. The answers below cover the questions that come up most often once the core sizing math is done.
Can I run a full-size refrigerator from a portable power station?
A full-size household refrigerator draws 100–200W continuously and uses 1–2kWh per day, which is far beyond what any portable camping station handles sustainably. Portable power stations are sized for 12V compressor coolers (30–50W average draw), not household appliances. If you're camping with a fridge, it should be a 12V or dual-voltage compressor unit, not a standard kitchen refrigerator.
What's the difference between a power bank and a portable power station?
Power banks charge phones and small devices via USB. Typical capacity is 10,000–30,000mAh (37–111Wh) and they have no AC outlet. Portable power stations add an AC inverter, DC outputs, and significantly more capacity (100Wh to 4,000Wh+). If you need to run anything with a standard wall plug (a CPAP, a laptop with a barrel connector, a small appliance) you need a power station, not a power bank. The Goal Zero Venture 70 is a good example of where a power bank fits — waterproof, packable, and right-sized for phones and headlamps on a short trip where you don't need AC outlets.
Is a portable power station better than a gasoline generator for camping?
For most camping applications, yes. A power station runs silently, requires zero fuel logistics, produces no exhaust (safe for enclosed spaces), and needs no maintenance. The trade-off is total energy capacity. A generator can run indefinitely with fuel; a battery is finite. For short trips up to a week where solar recharging is available, a power station is the cleaner and more practical choice. For extended base camps without solar access, a generator may make sense.
Do portable power stations work in cold weather?
Discharging in cold weather reduces available capacity temporarily. Expect 15–25% less runtime at 0°C compared to 20°C, and that capacity returns when the cells warm up. Charging in freezing temperatures is the real concern: charging LiFePO4 cells below 0°C (32°F) causes permanent capacity loss. Modern units with a BMS block cold charging automatically. In winter camp, store the station inside your tent or sleeping area overnight to keep it above freezing.
How do I know if my station's inverter can handle a compressor fridge's startup surge?
Check the fridge's startup (surge) wattage. It's usually 3–7× the running wattage and listed on the unit's spec label or in the manual. If your compressor fridge surges to 280W at startup, your power station's surge (peak) inverter rating needs to exceed 280W with margin. The Yeti 700's 1,000W surge and the Yeti 1500's 3,600W surge handle every 12V compressor cooler on the market without difficulty.
How many solar panels do I need to pair with a 1,000Wh station?
The rule of thumb is 200–300W of solar per 1,000Wh of station capacity for a same-day recharge in 4–6 peak sun hours. Panels deliver 60–80% of rated output in real conditions, so a 200W panel typically delivers 120–160W of actual input. Two 100W panels in a clear, south-facing site will recharge a 1,000Wh station in roughly 6–8 hours of good sun. Plan the site and the day accordingly.
Key takeaways:
- Portable power station sizing starts with one formula: watts × hours ÷ 0.85, then add a 20–30% buffer for your watt-hour target.
- A 12V compressor fridge at 35% duty cycle draws roughly 134Wh per day, far less than a continuous-run calculation would suggest.
- The Goal Zero Yeti 700 (677Wh, ~$699) covers most weekend car campers; the Yeti 1500 (1,505Wh, ~$1,499) covers fridge-plus-CPAP loads.
- LiFePO4 chemistry offers 3,000–5,000+ cycles versus roughly 500–800 for NMC, worth the premium for any station used regularly season over season.