EcoFlow RIVER 3
The RIVER 2's replacement — lighter, same hour-long wall recharge.
- Capacity
- 245 Wh
- AC output
- 300 W
- Chemistry
- LiFePO4
- Fridge-days
- ≈ 0.5
$229 MSRP Review pending
Use case
CPAP & Medical
Portable Power Stations
Quiet, reliable overnight power for CPAP machines and medical devices — at camp or during an outage.
Typical range ≈ 300–1,000 Wh
Featured Picks
EcoFlow RIVER 2
Ultralight weekend unit with a 60-minute wall recharge.
- Capacity
- 256 Wh
- AC output
- 300 W
- Chemistry
- LiFePO4
- Fridge-days
- ≈ 0.6
$239 MSRP
Read the review →
BLUETTI EB3A
Twice the inverter of its size class, but the shortest warranty here.
- Capacity
- 268 Wh
- AC output
- 600 W
- Chemistry
- LiFePO4
- Fridge-days
- ≈ 0.6
$299 MSRP
Read the review →
EcoFlow RIVER 3 Plus
The only sub-300 Wh unit that expands — to 858 Wh with an extra battery.
- Capacity
- 286 Wh
- AC output
- 600 W
- Chemistry
- LiFePO4
- Fridge-days
- ≈ 0.6
$299 MSRP Review pending
Explore CPAP & medical Power Content
View All Articles →USE CASE
Best Jackery for CPAP: Which Explorer Actually Covers Your Night
Three Jackery Explorers, sized against real CPAP draw with the arithmetic shown. The humidifier decides which one you need — and it's the reason the Explorer 300 Plus is a travel unit, not a backup unit.
Read article →
HOW TO
How Many Watts Does a CPAP Use? The Numbers, and the Arithmetic
A CPAP draws 10–15 W on DC and 60–90 W with the heated humidifier running — a six-fold difference that decides what size battery you need. Every figure here is worked out rather than asserted.
Read article →
USE CASE
Pure Sine Wave Inverters for CPAP: What You Actually Need
A CPAP needs a pure sine wave inverter, and roughly 300 W of it — but the size question matters far less than the waveform question. What each one means, and why every unit we list already passes.
Read article →
USE CASE
Best Power Stations for CPAP Machines: Quiet Power for a Good Night's Sleep
How to size and choose a battery that reliably runs your CPAP overnight — at a campsite or through a power outage — including the humidifier math nobody tells you about.
Read article →