Portable power stations: size classes, weight and connection limits

The compact class: same capacity, different output

RIVER 3 Plus stores 286 Wh and supplies 600 W of normal AC output; the C300 AC version stores 288 Wh and supplies 300 W. Their weights are about 4.7 kg and 4.13 kg. With capacities this close, the devices you plan to run decide the choice: anything needing more than 300 W of running power rules out the C300 AC before you reach the battery. RIVER 3 Plus also supports one RIVER 3 Plus extra battery, with the EB300 and EB600 named on the US store, while a supported expansion battery for the C300 AC is not established.

The 1 kWh class: four stations, four different limits

DELTA 3 Plus, C1000 Gen 2 and Elite 100 V2 each store 1024 Wh; Explorer 1000 v2 stores 1070 Wh. Their normal AC outputs are 1800 W, 2000 W, 1800 W and 1500 W, and their weights are about 12.5 kg, 11.3 kg, 11.5 kg and 10.8 kg. A difference of 46 Wh in capacity is small next to a 500 W difference in output, so start with the load list from the first guide, then compare weight for how often you will move the station.

Expansion also differs inside this class. DELTA 3 Plus lists compatible EcoFlow extra batteries. Anker states that C1000 Gen 2 does not accept an expansion battery, unlike the original 1056 Wh C1000. Jackery lists Explorer 1000 v2 among models that do not support additional battery packs. For the standalone Elite 100 V2, direct expansion support is not established by the reviewed specifications.

The 2 kWh class: weight becomes part of the decision

C2000 Gen 2 stores 2048 Wh and supplies 2400 W continuous; Explorer 2000 v2 stores 2042 Wh and supplies 2200 W; Elite 200 V2 stores 2073.6 Wh and supplies 2600 W. Their standalone weights are 18.9 kg, 17.9 kg and 24.2 kg, so the heaviest unit weighs about a third more than the lightest for a similar rated capacity. Plan where the station will live and how it will be moved before choosing the highest output. Only C2000 Gen 2 names an expansion battery, the BP2000 Gen 2; Jackery explicitly rules out battery packs for the JE-2000D, and Elite 200 V2 expansion support is unverified.

Connector shapes and boost modes are not ratings

Every station here outputs 120 V for the US market, but individual connections carry their own limits. The TT-30R outlet on C2000 Gen 2 is rated 20 A and 2400 W despite its connector format, so it does not establish 30 A continuous output. Explorer 2000 v2 limits AC output to 1500 W while it is charging at the same time. X-Boost on EcoFlow stations, SurgePad on the C300 and Power Lifting on BLUETTI stations are separate operating modes with device restrictions; the catalogue compares normal AC output only. Transfer-time claims also need their conditions: Jackery specifies 20 ms for Explorer 2000 v2 and warns that this is not a zero-interruption supply for equipment that requires one.

Match the panel to the solar input window, not just the watts

Solar limits rise with the class, but the voltage and current windows matter as much as the watt figure. The C300 AC accepts up to 100 W within 11–28 V and 8.2 A; RIVER 3 Plus accepts 220 W within 11–55 V and 13 A. In the 1 kWh class, DELTA 3 Plus has two inputs each limited to 11–60 V, 15 A and 500 W for 1000 W combined, C1000 Gen 2 accepts 600 W with a 60 V maximum, Elite 100 V2 accepts 1000 W within 12–60 V and 20 A, and Explorer 1000 v2 accepts a combined 400 W across two ports at 16–60 V. In the 2 kWh class, C2000 Gen 2 accepts 800 W within 11–60 V and 17 A, Explorer 2000 v2 a combined 400 W with one input limited to 200 W and 12 A, and Elite 200 V2 1000 W within 12–60 V and 20 A. A panel's open-circuit voltage must fit the window on every input it feeds, and panels, cables and adapters are separate purchases for every package here.

Choosing the class

1. List the devices that will run together and their running power; this sets the minimum output.
2. Decide how far and how often the station will be carried, then compare the listed weights in that class.
3. Check whether a future extra battery is supported, not supported or unverified for the exact model.
4. Read the outlet, charging and transfer-time limits that apply to your equipment.
5. Confirm that your panel's voltage and current fit the solar input window before buying a larger station for its solar limit.

Each figure above is a manufacturer specification for the exact standalone US package. None of them establishes usable energy, runtime for a particular appliance or performance in the field.