EcoFlow RIVER 2 vs vtoman FlashSpeed 300

vtoman FlashSpeed 300 portable power station

Pick this if

EcoFlow RIVER 2

Capacity: 243 Wh vs 230 Wh
List price: $219 vs $270
Cost per watt-hour: $0.90 vs $1.17
Watt-hours per pound: 31.6 Wh/lb vs 31.1 Wh/lb

Buyers who want one system to grow from camping into home backup.

Pick this if

vtoman FlashSpeed 300

Weight: 7.4 lb vs 7.7 lb

Drivers who mainly want jump-start capability plus basic backup power.

Spec by spec

A green arrow marks the better figure on each row. Rows where only one unit publishes a number are shown without a winner rather than guessed.

Metric	RIVER 2	FlashSpeed 300	What it means
Capacity	243 Wh	230 Wh	How much energy the unit stores. Sets how long everything else can run.
Continuous AC output	300 W	300 W	The largest load the inverter will run continuously, not counting surge.
Weight lower is better	7.7 lb	7.4 lb	The spec buyers most often regret ignoring.
List price lower is better	$219	$270	Vendor list price at the time of collection; street prices move.
Cost per watt-hour lower is better	$0.90	$1.17	Price divided by capacity. The fairest single value metric.
Watt-hours per pound	31.6 Wh/lb	31.1 Wh/lb	Capacity you get per pound carried.
Max solar input	110 W	90 W	Caps how large an array is useful, and therefore off-grid recharge speed.
AC recharge time lower is better	60 min	150 min	Vendor-stated time to full from a wall outlet.
Rated cycles	3,000 cycles	3,000 cycles	Vendor claim for charge cycles before capacity degrades to 80%.
UPS switchover lower is better	30 ms	—	How long the unit takes to switch to battery. Under 20 ms keeps a desktop alive.
Warranty	60 months	24 months	Stated warranty length from the vendor listing.

How each one ranks overall

EcoFlow RIVER 2

#83 of 104 for Best value (cost per watt-hour) ($0.90)
#80 of 103 for Most portable (Wh per pound) (31.6 Wh/lb)
#50 of 106 for Most inverter headroom (123 W/100Wh)
#42 of 49 for Fastest AC recharge (243 W)
#75 of 83 for Highest solar input (110 W)
#86 of 96 for Longest service life (729 kWh)
#82 of 103 for Most output per dollar (1.37 W/$)
#79 of 106 for Best for home backup (49/100)
#12 of 105 for Longest warranty (60 mo)

vtoman FlashSpeed 300

#98 of 104 for Best value (cost per watt-hour) ($1.17)
#85 of 103 for Most portable (Wh per pound) (31.1 Wh/lb)
#41 of 106 for Most inverter headroom (130 W/100Wh)
#48 of 49 for Fastest AC recharge (92 W)
#83 of 83 for Highest solar input (90 W)
#87 of 96 for Longest service life (690 kWh)
#89 of 103 for Most output per dollar (1.11 W/$)
#95 of 106 for Best for home backup (36/100)
#100 of 105 for Longest warranty (24 mo)

The brands behind them

EcoFlow

The tech-forward buyer who reads the spec sheet and wants room to grow

Best for: Buyers who want one system to grow from camping into home backup.

Not for: Buyers who want the lowest cost per watt-hour and will never use an app.

Full EcoFlow profile →

VTOMAN

The car owner who wants roadside rescue and backup power in one box

Best for: Drivers who mainly want jump-start capability plus basic backup power.

Not for: Buyers whose priority is a refined, well-supported power station.

Full VTOMAN profile →

Where these numbers come from. Every figure on this page is taken from EcoFlow’s own product listing and is stored with the vendor’s exact wording, reproduced below. We do not estimate missing specs — a field the vendor does not publish is shown as “—” and excluded from rankings. Source: us.ecoflow.com/products/river-2-240-portable-power-station.

Vendor wording for each figure (8)

capacityWh: “Capacity => 243Wh”
acOutputW: “AC Output => 120V 50Hz/60Hz, 300W (Surge 600W)”
weight: “Net Weight => 7.7lbs”
solarInputW: “Solar Input => 11-30V, 8A, 110W Max”
rechargeAcMinutes: “0-100% in only 60 min”
cycleLife: “80%+ capacity after 3000 cycles”
upsSwitchoverMs: “<30ms EPS auto-switch for essential devices.”
warrantyMonths: “<td>RIVER 2</td> <td>5 years</td>”

Where these numbers come from. Every figure on this page is taken from vtoman’s own product listing and is stored with the vendor’s exact wording, reproduced below. We do not estimate missing specs — a field the vendor does not publish is shown as “—” and excluded from rankings. Source: vtoman.com/products/vtoman-flashspeed-300-portable-power-station-副本.

Vendor wording for each figure (7)