Best power stations for a CPAP machine

Which portable power station runs a CPAP the most nights?

The EcoFlow RIVER 2 Pro leads this list on CPAP nights per charge (1.5 nights), among the 3 of 56 current models that meet every requirement. From another brand, the DJI Power 500 comes next (1.0 nights).

Leads on CPAP nights per charge

EcoFlow RIVER 2 Pro

768 Wh

1.5 nights

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Lightest that qualifies

EcoFlow RIVER 2 Max

512 Wh

13.4 lb

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Why these requirements?

A CPAP with a heated humidifier draws about 56 W, so 500 Wh gives roughly one 8-hour night after inverter loss; with the humidifier off it lasts far longer. 20 lb or less keeps it packable for travel. Sorted by nights per charge.

For a medical device, follow the CPAP maker’s guidance on backup power and keep a margin above these estimates.

Which models just miss?

These miss exactly one requirement, closest misses first.

• ✕Goal Zero Yeti 500 · needs capacity ≥ 500 Wh; has 499.2 Wh
• ✕Goal Zero Yeti 700 · needs weight ≤ 20 lb; has 20.3 lb
• ✕Jackery HomePower 1000 v2 · needs weight ≤ 20 lb; has 23.4 lb
• ✕BLUETTI Elite 100 mini · needs weight ≤ 20 lb; has 23.6 lb
• ✕Jackery Explorer 1000 v2 · needs weight ≤ 20 lb; has 23.8 lb
• ✕Jackery HomePower 1000 Plus v2 · needs weight ≤ 20 lb; has 23.8 lb

How do the qualifying models score for carrying a CPAP on trips?

Scoring only the 3 models that pass every requirement, the EcoFlow RIVER 2 Pro scores highest (72 of 100), ahead of the EcoFlow RIVER 2 Max (30).

Weights: CPAP nights per charge 40%, capacity 20%, Wh per list dollar 20%, low weight 10% and rated cycles 10%. Models missing a scored spec are marked †. How the score works.

How do the top picks meet each requirement?

Every model below passes all 2 requirements; the matrix shows by how much.

Why is the EcoFlow RIVER 2 Pro ahead of the EcoFlow RIVER 2 Max?

The EcoFlow RIVER 2 Pro beats the EcoFlow RIVER 2 Max on CPAP nights per charge (1.5 nights vs 1.0 nights) and capacity (768 Wh vs 512 Wh).

The EcoFlow RIVER 2 Max is the better pick if Wh per list dollar and low weight matter more to you (1.71 Wh per $ vs 1.45 Wh per $ and 13.4 lb vs 18.2 lb).

When should you not pick the EcoFlow RIVER 2 Pro?

Pick something else in these cases:

• Weight matters most. At 18.2 lb it is heavier than the median qualifying model; the EcoFlow RIVER 2 Max weighs 13.4 lb.
• Budget is tight. Its $529 list price is above the median qualifying model; the EcoFlow RIVER 2 Max lists at $299.
• It doubles as a computer UPS. 30 ms switchover; the DJI Power 500 is rated at 20 ms.

Which requirement rules out the most models?

The weight ≤ 20 lb requirement is the hardest to meet: 44 of the 56 current models fail it. Together the requirements leave 3 qualifying models.

How many 8-hour nights does each qualifying model give?

The humidifier decides most of it: ResMed's typical figures are 56.1 W for the AirSense 11 with its heated humidifier and 6.3 W for the AirMini travel CPAP.

With the heated humidifier, 0 of the 3 qualifying models cover two full nights; without it, 3 do.

How fast do qualifying models recharge?

The EcoFlow RIVER 2 Max refills fastest from solar, about 2.3 h of strong sun at its full input.

Which qualifying models pack the most battery per pound?

The EcoFlow RIVER 2 Pro stores the most energy for its weight among qualifying models, 42 Wh per pound.

What does it cost to meet these requirements?

The cheapest qualifying model is the EcoFlow RIVER 2 Max at $299 list; the median qualifying model lists at $499.

• Price range: $299 to $529 across 3 models with a list price.
• Most capacity per dollar: the EcoFlow RIVER 2 Max at 1.71 Wh per list dollar.
• Cheapest expandable: none of the qualifying models.

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