EcoFlow RIVER 3 Plus

Q: How many nights will the EcoFlow RIVER 3 Plus run a CPAP?

A ResMed AirSense 11 at its typical 56 W runs about 3.5 hours on AC power: less than one 8-hour night (44% of one). ResMed's typical figure includes its humidifier; a higher humidifier or heated-tube setting raises the draw. Running the CPAP from the 12 V socket with ResMed's DC converter avoids the inverter's own draw.

Q: How long does the EcoFlow RIVER 3 Plus take to charge?

EcoFlow states 60 min to full from a wall outlet, and up to 220 W of solar input.

Q: Can you add batteries to the EcoFlow RIVER 3 Plus?

Yes. EcoFlow states it expands to 858 Wh with its extra batteries.

Q: What battery does the EcoFlow RIVER 3 Plus use?

LiFePO4, rated by EcoFlow for 3000 cycles to 80% capacity.

The RIVER 3 Plus is a 286 Wh, 10.4 lb EcoFlow station with 600 W of AC output, for phones, laptops, lights, a Starlink Mini or a 12 V cooler on short trips. It is the only station under 700 Wh on this site that lists an extra battery, up to 858 Wh in all.

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EcoFlow, Under 700 Wh

286Wh

600 WAC output, 1,200 W peak

235 Whusable at 82%

10.4 lbweight

60 min to fullwall recharge

Phones, laptops, lights, a fan, a CPAP for a night or two.

Strengths

600 W continuous and 1,200 W surge, twice the 300 W of the Anker SOLIX C300 and Jackery Explorer 300: it runs a 444 W blender, which those two cannot, and a Starlink Standard kit for about 2.1 hours.
EcoFlow rates it as expandable to 858 Wh with an extra battery; the Anker SOLIX C300, BLUETTI Elite 30 V2 and Jackery Explorer 300 list no expansion battery.
12 V car socket (126 W): runs a Dometic CFX3 35 cooler about 20 hours, or a Starlink Mini about 5.9 hours.
Full in 60 minutes from the wall at 380 W, the shortest wall recharge of the four small stations here, and 220 W solar input, against 100 W on the Anker SOLIX C300 and 200 W on the BLUETTI Elite 30 V2.
LiFePO4 cells rated for 3,000 cycles to 80% capacity, and a 5-year warranty (3 years on the Jackery Explorer 300).

Limits

Cannot run a kettle, microwave or hair dryer: even a compact microwave draws 1,050 W, above its 600 W.
Its 1,200 W surge is below the 1,300 W compressor start-up that Whirlpool's tech sheet gives for a 27 cu ft refrigerator.
One USB-C port, rated 100 W; the Anker SOLIX C300 and BLUETTI Elite 30 V2 have 140 W USB-C.
10.4 lb, the heaviest of the four small stations here; the Jackery Explorer 300 weighs 7.1 lb.

Prices today

Where	Price	Per Wh	Stock	Checked
us.ecoflow.com	$299	$1.05	In stock	Oct 28, 2026, 22:59 UTC	Store
Amazon	$299	$1.05	In stock	Oct 28, 2026, 22:58 UTC	Amazon

Product prices and availability are accurate as of the date/time indicated and are subject to change.

Price history

Price tracking for this model started Oct 28, 2026. The store and Amazon prices are recorded twice a day; the chart appears once there are a few days of readings.

What the RIVER 3 Plus runs

Runtimes for one appliance at a time, from each appliance maker's own figure. They count 82% of the 286 Wh battery as usable and add 10 W for the inverter on AC loads (the method). For a mix of appliances, use the sizing tool.

Appliance	Draw	RIVER 3 Plus
Refrigerator, top freezer (21 cu ft)Whirlpool WRT541SZD (21.3 cu ft top freezer; ENERGY STAR model WRT541SZD0, no ice maker installed)	46 W	4.2 hours
Chest freezer (7 cu ft)Midea MRC07M7AWW (7.0 cu ft compact chest freezer, manual defrost)	26 W	6.6 hours
CPAP (ResMed AirSense 11)ResMed AirSense 11 (AutoSet / Elite / CPAP) with 65 W power supply unit, HumidAir 11 humidifier	56 W	3.5 hours
Wi-Fi router (eero 6+)eero 6+ (Amazon eero)	5 W	16 hours
55-inch TVLG 55UT7570PUB (UT75 series)	127 W	1.7 hours
Starlink StandardStarlink Standard kit (Starlink V4 dish + Router 3; US spec page titled 'Standard 4X')	100 W	2.1 hours
Gas furnace blower (80,000 BTU)Goodman GR9S960803BN (80,000 BTU/h input, 95% AFUE, single-stage, 1/2 HP 9-speed ECM circulator blower)	394 W	35 minutes
12 V cooler (Dometic CFX3 35)Dometic CFX3 35 (CFX335, item 9600024617)	12 W	20 hours
1/3 HP sump pumpLiberty Pumps 257 (1/3 HP, 115 V, cast iron, vertical magnetic float switch; PSC motor)	598 W	23 minutes
Window AC, 5,000 BTUFrigidaire FHWC054TE1 (5,000 BTU, 115 V, R-32)	450 W	31 minutes
Phone chargesSamsung Galaxy S25, 4,000 mAh	15 Wh	15 full charges
Laptop charges (MacBook Air 13)Apple MacBook Air 13-inch (M5)	54 Wh	4 full charges
E-bike battery chargesRad Power Bikes RadRunner Plus (MY2025), Safe Shield Advanced External Battery 13 Ah	624 Wh	37% of one charge

EcoFlow says the IP54 rating applies only to the battery pack, not the entire package. The 858 Wh figure is EcoFlow's expanded maximum, so the runtimes on this page are for the 286 Wh station on its own.

Specifications

Every figure is EcoFlow's own, from the page linked beside it.

Capacity	286 Whsource: "Capacity 286Wh"
AC output, continuous	600 Wsource: "3 outlets, 600W total (Surge 1200W, X-Boost 1200W)"
AC output, peak	1,200 Wsource: "3 outlets, 600W total (Surge 1200W, X-Boost 1200W)"
Boost mode	1,200 Wsource: "3 outlets, 600W total (Surge 1200W, X-Boost 1200W)"
AC outlets	3source: "3 outlets, 600W total (Surge 1200W, X-Boost 1200W)"
Fastest USB-C port	100 Wsource: "USB-C Output 1 port, 5/9/12/15⎓3A Max, 20V⎓5A Max,100W Max"
USB-C ports	1source: "USB-C Output 1 port, 5/9/12/15⎓3A Max, 20V⎓5A Max,100W Max"
USB-A ports	2source: "USB-A Output 2 ports, 5V=2.4A, 12W max per port, total 24W"
12 V car socket	Yessource: "DC Output 12.6V⎓10A, 126W Max"
Battery chemistry	LiFePO4source: "Battery Chemistry LiFePO4, 3000 cycles to 80% capacity"
Cycle life	3000 cycles to 80% capacitysource: "Battery Chemistry LiFePO4, 3000 cycles to 80% capacity"
Weight (lb)	10.4 lbsource: "Net Weight 10.4 lb"
Weight (kg)	4.7 kgsource: "Net Weight Approx. 4.7 kg (10.36 lb)"
Size	9.2 x 9.1 x 5.8 insource: "Dimensions 9.2×9.1×5.8 in"
Wall recharge	0-100% in 60 min at 380W ACsource: "380W 0-100% in 60 min"
Wall charging input	380 Wsource: "AC Input 100~120V, 10A Max, 50/60Hz, 380W 0-100% in 60 min"
Max solar input	220 Wsource: "Solar Input 220W, 0-100% in as fast as 1.5 hr"
UPS switchover	Under 10 mssource: "UPS <10 ms"
Expandable to	858 Whsource: "Expandable up to 858Wh with a wire-free connection". 286 Wh + EB600 572 Wh = 858 Wh (manual: 'supports connecting up to 1 EcoFlow RIVER 3 Plus Smart Extra Battery')
Warranty	5 yearssource: "RIVER 3 Plus \| 5 years"
App	Yessource: "equipped with an LED, app, and software alerts"
Noise	<30 dBsource: "Noise <30 dB"
Certifications	IP54 (battery pack)source: "The IP54 water-proof rating applies only to the battery pack, not the entire package."

Against other under 700 wh models

Spec	EcoFlow RIVER 3 Plus	Anker SOLIX C300	BLUETTI Elite 30 V2	Jackery Explorer 300
Price today (lowest)	$299	Only with a protective bag on Amazon ($369.99)	$279.99	$289
Price per Wh	$1.05/Wh		$0.97/Wh	$0.98/Wh
Capacity	286 Wh	288 Wh	288 Wh	293.8 Wh
AC output, continuous	600 W	300 W	600 W	300 W
AC output, peak	1,200 W	Not stated	Not stated	500 W
AC outlets	3	3	2	2
Fastest USB-C port	100 W	140 W	140 W	60 W
12 V car socket	Yes	Yes	Yes	Yes
Battery	LiFePO4	LFP	LiFePO4	Lithium-ion (cell chemistry not specified)
Cycle life	3000 cycles to 80% capacity	Not stated	3,000+ cycles to 80% original capacity	800 cycles to 80%+ capacity
Weight	10.4 lb	9.1 lb	9.48 lb	7.1 lb
Wall recharge	60 min to full	70 min to full	70 min to full	4.5 h to full
Max solar input	220 W	100 W	200 W	Not stated
UPS switchover	Under 10 ms	10 ms	10 ms	Not stated
Expandable to	858 Wh	Not stated	Not expandable	Not expandable
Warranty	5 years	5 years	5 years	3 years
App	Yes	Yes	Yes	Not stated