The catch
Anker SOLIX C1000 Gen 2
It is 6.7lb heavier.
Side by side
C1000 Gen 2 is the pick when ordinary AC loads can go past 800W or the extra stored energy is worth the added weight. RIVER 2 Pro is the pick when your equipment stays under its limits and USB-C recharging helps your existing kit. The Anker's larger inverter doesn't mean its 2000W battery rating also holds in bypass operation.
Before you buy
Take an ordinary 1200W appliance running by itself. It is above RIVER 2 Pro's 800W rated AC output but below the battery and bypass ceilings of C1000 Gen 2.
Where this comes from
Here the example load is an ordinary 1200W AC load, above 800W and below both the 2000W battery rating and the 1800W bypass rating. Startup surges need a separate check.
The catch
It is 6.7lb heavier.
The catch
Ordinary AC output cannot exceed 800W.


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C1000 Gen 2 and RIVER 2 Pro compared for a temporary work desk, an ordinary AC load above 800W and charging from a USB-C supply.
C1000 Gen 2 is the pick when ordinary AC loads can go past 800W or the extra stored energy is worth the added weight. RIVER 2 Pro is the pick when your equipment stays under its limits and USB-C recharging helps your existing kit. The Anker's larger inverter doesn't mean its 2000W battery rating also holds in bypass operation.
Which one fits
River's 800W rating is below the example. Check startup and the Anker mode limit.
Anker's USB-C specification is for output, whereas River explicitly accepts USB-C input.
At 18.2lb versus 24.9lb, River is lighter, provided the capacity is sufficient.
River's rated output is lower than Anker's bypass limit of 1800W.
In practice
Take an ordinary 1200W appliance running by itself. It is above RIVER 2 Pro's 800W rated AC output but below the battery and bypass ceilings of C1000 Gen 2.
Here the example load is an ordinary 1200W AC load, above 800W and below both the 2000W battery rating and the 1800W bypass rating. Startup surges need a separate check.
Through its USB-C input, RIVER 2 Pro takes up to 100W, which gives a compatible USB-C charger another job. The USB-C rating on C1000 Gen 2 describes output to devices, and its documented recharge routes use AC or DC input.
River explicitly documents bidirectional USB-C operation. A USB-C output rating alone does not establish USB-C input support.
Divide nameplate energy by a constant 100W load and you get ideal upper bounds of about 10.2 hours and 7.7 hours, before conversion loss, reserve and the station's own consumption. If extra energy is worth more to you than carrying 6.7lb extra, choose Anker.
The weight difference is 24.9 minus 18.2 = 6.7lb. 1024Wh ÷ 100W = 10.24h and 768Wh ÷ 100W = 7.68h, while actual runtime is lower and depends on the load.

Anker SOLIX, C1000 Gen 2
This 24.9-pound, 1,024Wh station has a 2,000W inverter, 140W USB-C and a 49-minute fast-charge mode that you switch on in the app.

EcoFlow, EFR620
This 768Wh camping station has 800W continuous AC output and a handy 100W USB-C port. You get extra battery reserve without the weight of a full 1kWh unit.
Spec by spec
| Spec | Anker SOLIX C1000 Gen 2 | EcoFlow RIVER 2 Pro | In practice |
|---|---|---|---|
| Stored energy | 1024Wh | 768Wh | Energy capacity tells you about runtime, and inverter watts decide whether the load can run. |
| Ordinary AC output | 2000W battery output, 1800W bypass limit | 800W rated AC output | Go by ordinary ratings and set aside boosted appliance modes. |
| Weight | 24.9lb | 18.2lb | Carrying the station every day changes what extra output and capacity are worth. |
| USB-C route | Up to 140W output, recharge through documented AC or DC routes | Up to 100W USB-C input and output | A compatible USB-C supply can be reused to recharge River. |
| Solar input ceiling | 600W | 220W | Check a panel's electrical compatibility on its own, apart from the wattage ceiling. |
Trade-offs
Change of plan
Go with Anker SOLIX C1000 Gen 2. The larger ordinary inverter capacity is on C1000 Gen 2.
Go with EcoFlow RIVER 2 Pro. RIVER 2 Pro weighs 18.2lb and can be recharged over USB-C.
Decision guide
Ordinary AC loads that may exceed 800W, or extra stored energy worth the carrying weight, favor C1000 Gen 2. Equipment that stays within its limits, plus a use for USB-C recharging, favors RIVER 2 Pro. Do not assume the Anker's 2000W battery rating carries over to bypass operation just because its inverter is larger.
Picture an ordinary 1200W appliance running alone. It is above RIVER 2 Pro's 800W rated AC output and below the battery and bypass ceilings of C1000 Gen 2. Anker is the choice for that verified load, after you check startup behavior and the appliance's actual label. EcoFlow's boosted appliance mode is no evidence that every 1200W device will work normally. And lower-power electronics may not need the larger inverter at all.
Through its USB-C input, RIVER 2 Pro takes up to 100W, which gives a compatible USB-C charger a second job. The USB-C rating on C1000 Gen 2 describes output to devices, and its documented recharge routes use AC or DC input. River is the choice if reusing that USB-C supply is a real travel or desk requirement. Charging power and time depend on the negotiated profile and not on the number printed on the charger.
At a constant 100W load, nameplate energy divided by the load gives ideal upper bounds of about 10.2 hours and 7.7 hours, before conversion loss, reserve and the station's own consumption. If extra energy is worth more to you than carrying 6.7lb more, choose Anker. If you carry the station often and the lower energy budget is enough, choose River. Neither figure is a promised laptop or monitor runtime.
By the numbers
What we found across the portable power stations we compare, plus the checked facts behind each finding.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Anker SOLIX C1000 Gen 2 |
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| EcoFlow RIVER 2 Pro |
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Ready to buy
Open either model on Amazon for the current price, customer reviews and delivery options.

Power a verified ordinary AC load over 800W that fits the unit's limits
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Refill from a compatible USB-C supply of up to 100W
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