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Cheap is not the same as good value. Ranked on list price divided by independently measured usable capacity, the Bluetti AC70 is cheapest per watt-hour and the Anker SOLIX C1000 Gen 2 is the best buy.
The EcoFlow River 2 Pro weighs 18.4 lb and recharges in a measured 1 h 18. It also returned just 81% of its rated capacity, the weakest efficiency of any unit we cover.
For camping the number that matters is usable watt-hours per pound of carry weight. The Jackery Explorer 1000 v2 leads at 37.3, with full measured weights and calculated fridge runtimes.
A CPAP draws about 35 W with the humidifier off and roughly double with it on. Here is how many nights each power station actually delivers, calculated from independently measured capacity.
Van and RV power is about capacity you can recharge while moving. The Jackery Explorer 2000 v2 leads on 1,710 measured usable watt-hours at the best weight ratio here, with full comparisons.
Home backup is a question of hours, not watt-hours. The EcoFlow Delta Pro 3 wins on 3,790 measured usable watt-hours and genuine 240 V output. Full calculated runtimes and every source.
The EcoFlow Delta Pro 3 returned 3,790 of 4,096 rated watt-hours in independent testing — 93%, the highest measured efficiency on this site — with native 120 V and 240 V split-phase output.
The Anker beats the EcoFlow on every published number and costs $1,300 less. The EcoFlow is the only one of the two anybody has independently measured. Here is why that decides it.
A generator runs indefinitely but needs fuel, ventilation and maintenance. A battery is silent and safe indoors but finite. Here is the honest comparison, including the case for owning both.
How many hours of refrigeration each class of power station delivers, calculated from independently measured capacity, plus the food-safety window that decides whether you need a battery at all.
Living off-grid means cycling the battery daily, so rated cycle life and solar input matter more than headline capacity. The Bluetti Elite 200 V2 wins on 6,000 cycles and 1,000 W of solar.
Work out the watt-hours you actually need in five steps, with typical appliance draws, the efficiency correction almost everyone forgets, and a worked example carried through to a real unit.
LiFePO4 lasts four to eight times longer and is far harder to set on fire. NMC is lighter. For a power station the answer is almost always LiFePO4 — here is why, and the number that actually matters.
Every portable power station delivers less energy than its rating. Independent testing puts the loss between 7% and 25%. Here is where it goes, how to work out your real number, and which units keep the most.
A 100 W panel was independently measured averaging 50.7 W in full sun. Here is where the rest goes, how to plan around it, and the input ceiling that silently wastes half of some arrays.
The Anker SOLIX C1000 Gen 2 returned 87% of its rated capacity in independent testing, puts out 2,000 W, and recharged in a measured 56 minutes. Our highest-scoring unit, with every figure sourced.
Ten power stations from EcoFlow, Jackery, Bluetti and Anker SOLIX ranked on independently measured usable watt-hours. The Anker SOLIX C1000 Gen 2 wins on measured value; here is the full table and every source.
The Bluetti Elite 100 V2 tied for best measured efficiency in its class at 87%, and takes 1,000 W of solar — double most rivals. Its wall recharge is the slowest here and Bluetti contradicts itself on noise.
The EcoFlow Delta 3 recharged fastest of any 1 kWh unit at a measured 54 minutes and is the only one that expands to 5 kWh. It also gave back the least of its rating. Every figure sourced.
Four brands compared on independently measured efficiency, solar ceilings, cycle ratings and how honest their published claims turned out to be. The answer is not the same for every use case.
The Jackery holds more usable energy and weighs less. The EcoFlow recharges in under an hour and expands to 5 kWh. Six criteria, both independently measured, and a clear answer for each use case.
The Jackery Explorer 1000 v2 delivered the most absolute usable capacity in its class at 910 Wh and weighs least at 24.4 lb. Its solar ceiling and cycle rating are where it loses ground.
The Jackery Explorer 2000 v2 delivers 1,710 measured usable watt-hours at 44 per pound, the best ratio on this site. Its claimed 1 h 45 recharge was independently timed at 2 h 30.