5–0 on 6 shared metrics

EcoFlow RIVER 2 vs MARBERO 237wh solar generator with solar panel

On 6 shared published metrics the RIVER 2 leads 5–0. Capacity is nearly matched (243 Wh vs 237 Wh), so the decision turns on the rows below — not size. Choose RIVER 2 when you will move the unit often — it leads on weight and watt-hours per pound.

RIVER 2243 Wh · $177.65 list · as of 2026-10-09

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237wh solar generator with solar panel237 Wh · $209.99 list · as of 2026-10-13

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Carry / campingRIVER 2
Longer runtimeRIVER 2
Value per WhRIVER 2

Who wins which job

Pick RIVER 2 when

EcoFlow RIVER 2

Capacity: 243 Wh vs 237 Wh
Weight: 7.7 lb vs 9.0 lb
List price: $177.65 vs $209.99
Cost per watt-hour: $0.73 vs $0.89

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

Pick 237wh solar generator with solar panel when

MARBERO 237wh solar generator with solar panel

It does not lead a shared published row — buy it only for brand or fit reasons outside this table.

Budget-conscious campers and light-outage households who need a small, cheap backup for phones, lights, and fans.

Spec by spec

A green mark is the better published figure on that row. Blank cells mean the vendor did not publish the number — we do not estimate.

Metric	RIVER 2	237wh solar generator with solar panel	What it means
Capacity	243 Wh	237 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	9.0 lb	The spec buyers most often regret ignoring.
List price lower is better	$177.65	$209.99	Hub catalogue list price (same figure as product pages). Historical lows stay off this column.
Cost per watt-hour lower is better	$0.73	$0.89	Price divided by capacity. The fairest single value metric.
Watt-hours per pound	31.6 Wh/lb	26.3 Wh/lb	Capacity you get per pound carried.
Max solar input	110 W	—	Caps how large an array is useful, and therefore off-grid recharge speed.
AC recharge time lower is better	60 min	—	Vendor-stated time to full from a wall outlet.
Rated 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	—	Stated warranty length from the vendor listing.

How each one ranks overall

EcoFlow RIVER 2

#32 of 51 for Best value (cost per watt-hour) ($0.73)
#40 of 50 for Most portable (Wh per pound) (31.6 Wh/lb)
#28 of 51 for Most inverter headroom (123 W/100Wh)
#23 of 25 for Fastest AC recharge (243 W)
#39 of 40 for Highest solar input (110 W)
#40 of 42 for Longest service life (729 kWh)
#34 of 51 for Most output per dollar (1.69 W/$)
#24 of 25 for Best for home backup (49/100)
#22 of 51 for Longest warranty (60 mo)

MARBERO 237wh solar generator with solar panel

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.

All EcoFlow models →

MARBERO

Price-led entry-level power buyer

Best for: Budget-conscious campers and light-outage households who need a small, cheap backup for phones, lights, and fans.

Not for: Anyone planning to run fridges, medical devices for long periods, or whole-home backup.

All MARBERO models →

Where these numbers come from. WattPicks does not test power stations — this is a spec profile, not a review. 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.

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. WattPicks does not test power stations — this is a spec profile, not a review. Every figure on this page is taken from MARBERO’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: MARBERO listing on Amazon.

Vendor wording for each figure (3)

capacityWh: “237 Wh”
acOutputW: “300”
weight: “9 pounds”

Frequently asked

Which is better for most buyers, the EcoFlow RIVER 2 or the MARBERO 237wh solar generator with solar panel?

The RIVER 2 leads 5–0 on shared published metrics. That edge matters when capacity, weight, list price match what you need; otherwise take the 237wh solar generator with solar panel.

I care most about carry / camping — which should I buy?

Choose RIVER 2 when you will move the unit often — it leads on weight and watt-hours per pound.

Method and sources

Every row on this page is a published manufacturer figure from the WattPicks catalog at build time. WattPicks does not run laboratory tests on these units, and blank cells mean the vendor did not publish that metric — not that we estimated it.

Read our methodology for how the catalog is normalized, and about WattPicks for who publishes it.