We read the spec sheet for every portable power station and do the arithmetic nobody else publishes.
1,152 Wh ·$449
2,560 Wh ·$1,000
1,056 Wh ·$430
3,072 Wh ·$1,400
2,048 Wh ·$950
Each dollar of street price buys this many nameplate watt-hours, so a higher figure means more battery for the same money.
1,152 Wh ·$449
1,024 Wh ·$530
2,560 Wh ·$1,000
1,056 Wh ·$430
3,072 Wh ·$1,400
The price divided by every kilowatt-hour the maker rates the pack to deliver, assuming a linear fade to 80% so the average cycle gives 90% of nameplate; it is the number that separates LiFePO4 from NMC.
2,048 Wh ·$950
99 Wh ·$149
1,024 Wh ·$530
632 Wh ·$499
497 Wh ·$500
The battery you carry per kilogram of unit, so a higher figure means the same energy in a lighter box.
The calculatorapplies this same arithmetic to your own loads, and themethodologyspells out every assumption behind the numbers, including the 85% inverter efficiency and the linear fade to 80% capacity.
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