Where This Guide Comes From
The method and every number above come from the source video — its draw tests, its worked example, and the comment section it generated. If you want the full context, this is the video worth your time:
"Which power station should I buy?" is asked a hundred times a season on every camping forum, and the replies are usually brand wars. This guide comes at it differently. It is built from one video — ReeWray Outdoors' unsponsored portable power station guide, with over 2 million views and a comment section full of real buyers — and I have written out the actual method from it, step by step, so you can run the same numbers on your own gear.
The video's top comment sums up why people trust it: a licensed electrician wrote, "Came for a product recommendation. Left a certified electrician." — 1,241 viewers liked that line. The creator has tested and reviewed well over 30 power stations, and he makes no secret of his own expensive mistake at the start.
Start With Somebody Else's $1,400 Mistake
Before the method, the motivation. ReeWray opens the video with his own bad buy: the original Jackery Explorer 1000 plus a 100W solar panel, roughly $1,400 all in. The products were decent and still work today — he just paid too much and got less than he needed. That is the failure this guide exists to prevent: buying a number off the box before you have done the math on what you actually run.
And ignore the marketing photos while you're at it. You have seen the ads — a hiker carrying a 35-pound power station up a mountain, a tent camp running a toaster oven. Nobody does that. You don't need a $5,000, 200-pound system to sit by a tent and charge a laptop. You need two numbers: watt-hours (how long it will run) and watts (how much it can run at once). Here's how to get them honestly.
Step 1: List What You Will Actually Run
The only reliable way to size a station is to start with the devices, not the spec sheet. Two tools help:
- A cheap watt meter. Under $20, you plug the device into it and read its real consumption instead of guessing.
- A typical-power table. ReeWray keeps one as a Google spreadsheet linked in his video description, and the numbers below come straight from it. If you want a number for a device he hasn't listed, his standing offer is to add it — that's exactly the kind of detail a comments section rewards.
Step 2: Do the Watt-Hour Math on Your Own Scenario
Here is his worked example: a two-day weekend of car camping — a 12V fridge, two cups of coffee each morning, two phones charged overnight, and a small USB fan at night. No solar, because the trip is hiking days, not camp days.
| Device | Consumption | Usage | Watt-hours needed |
|---|---|---|---|
| 12V fridge / freezer | ~20 Wh per hour of use; ~45W running, ~200W surge at start | 40 hours over the weekend | 800 Wh |
| Coffee maker | ~75 Wh per 4-cup cycle; ~900W while brewing | 2 mornings | 150 Wh |
| Two phones | ~48 Wh per full charge each | 2 nights | 192 Wh |
| Small USB fan | ~12 Wh per hour | 16 hours (8h × 2 nights) | 192 Wh |
Add that up: 800 + 150 + 192 + 192 = 1,334 Wh. Add about 10% as reserve and you land at ~1,467 Wh of usable capacity.
Step 3: Battery Chemistry — NMC vs LiFePO4
Read the spec sheet carefully. If it only says "lithium" or "lithium-ion," it is almost always NMC. LiFePO4 is almost always labeled LFP or LiFePO4. This distinction matters more than any other spec on the page:
- NMC (ternary lithium) — higher energy density, so a lighter and often smaller unit at the same capacity, plus slightly faster charging in cold weather. Those are its two real advantages.
- LiFePO4 (LFP) — roughly six times the cycle life: about 3,000–4,000 full charge/discharge cycles versus 500–800 for NMC. If a cell ever fails catastrophically, LFP is far less likely to produce a violent fire — heavy smoke is the typical failure signature — and the materials contain no nickel, manganese or cobalt.
His conclusion after testing 30+ units: he no longer reviews NMC-based stations, mainly on safety, and he has been openly critical of brands whose lineups stayed NMC for years. Unless raw weight is the deciding factor for your specific use, LiFePO4 is the sane default — and if you're a daily or weekly user, the cycle-life gap alone settles it.
Step 4: Solar Input — the Rule of Thumb
If you plan to refill from solar, the spec that matters is maximum solar input. The rule of thumb he uses: multiply the max solar input watts by 5 — if that equals or exceeds your battery capacity, you can fully recharge in one day of decent sun.
- A 2,000 Wh station with 300W max solar input: 300 × 5 = 1,500 Wh per day — not enough to go from zero to full in one day.
- A 1,000 Wh station with 600W max solar input: 600 × 5 = 3,000 Wh per day — fully charged in about a third of a day, or a full day while also powering other loads.
If you're not planning to charge from solar, this whole step is a non-issue — most stations charge from solar anyway. But if one-day refills are part of your plan, treat solar input as a first-class spec, right next to capacity and inverter size.
The Extras Worth Knowing (and Two That Aren't)
The four steps above are the core. These are the features that separate a considered buy from a lucky one:
- Warranty: about 2 years is the category average; 5-year warranties exist but usually require registration after purchase. A long warranty is only as good as the brand's survival odds — with so many new brands entering the space, established names like Bluetti, EcoFlow, Jackery and Anker are the safer bet if warranty is your priority.
- App control, UPS mode, wireless charging: nice-to-haves. A rugged, cheaper unit without them can be the better value — his example is Pecron, which he happily uses despite no app support.
- Battery expansion: if home backup or RV use is on your horizon, buy a station that accepts expansion batteries. The best ones charge independently of the main unit and can even output DC while disconnected.
- RV-30 port: handy for plugging into RV shore power or a manual transfer switch wired to your home panel. Two gotchas: not all RV-30 ports actually deliver the full 30A — many are capped at 20A by the inverter — and if the station lacks the port, a standard plug adapter does the job.
- 240V split-phase: a few brands (Bluetti, EcoFlow, Anker) let you pair two units over a special parallel interface for 240V off-grid. It's the pricier end, but it's the only portable path to 240V.
The Four Questions the Comments Keep Asking
Read 5,000+ comments on a buyer's guide and you learn what people actually worry about. Four questions came up again and again, and they're worth answering directly:
1. "Is it healthy to fully charge it, then fully drain it?"
The habits that shorten a station's life, per the video, are constant fast-charging, fast-discharging and use in extreme heat. A modern LiFePO4 with a decent BMS handles normal charge/discharge cycles fine — the BMS balances cells and protects against over-discharge. Practical habit: recharge before the low cutoff, don't store it at 100% in summer heat for months, and stop worrying about the rest.
2. "I camp for a week and only get one charge — I cook with a kettle and rice cooker."
Then cooking is your sizing driver, not your phone. Kettle and rice cooker draws are greedy but brief — count their watt-hours, make sure the inverter handles the simultaneous draw, and if you're off-grid for a week, Step 4's solar rule of thumb is your real check.
3. "I need it for a CPAP at night."
A real, common need the comments keep raising. Size a full night at the CPAP's actual draw — a heated hose pulls noticeably more — and pick capacity for the whole night, not the device's marketing wattage. It's exactly the kind of load the calculation above handles: a number in, a number out.
4. "Most reviewers throw electrical lingo at a greenhorn."
Fair. That's why this guide uses exactly two numbers: watt-hours for how long, watts for how big at once. If you can add and multiply, you can size a station. Everything else in the marketing is noise until those two numbers are right.
What Viewers Actually Said Under This Video
The comment section under ReeWray's guide has over 2,400 replies — real buyers mid-decision, from a certified electrician to someone planning emergency power for a heart pump. Below are the ten most-liked comments, ranked by how many viewers found them useful, with straight answers after each one.
And if you're not hunting for a consumer brand but need the portable power station itself — a custom LiFePO4 pack at a specific voltage and capacity, an OEM or ODM project, or wholesale supply for your own product line — that's what we do. Dajiu Energy is a Chinese manufacturer building portable power stations and LiFePO4 batteries for OEM/ODM projects since 2017. See our portable power station OEM / wholesale supply or more power station guides — tell us your voltage, capacity and size, and we'll engineer the pack to hit it.
Bottom Line
You don't need to be an electrician to pick a power station correctly. You need your own use case, a watt-hour total, a watt ceiling, and a battery chemistry that matches how often you'll use it. The buyers who did that math first are the ones who aren't in the comments asking how to return theirs.