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EcoFlow RIVER 2 Max Portable Power Station

No named independent test of this model was found yet, so only rated specs are shown.

Rated specs

Capacity	512Wh [maker]
AC output	120V 50Hz/60Hz, 500W (Surge 1000W) [maker]
Weight	Approximately 13.4lbs [maker]
Dimensions	10.6 x 10.2 x 7.7inches [maker]
Battery chemistry	LFP [maker]
Cycle life	80%+ capacity after 3000 cycles [maker]
USB-A	5V, 2.4A, 12W Max [maker]

Checked against the maker page

Each of these 17 rows quotes the manufacturer page word for word. Some rows add specs from that page that are not in the summary table above.

Spec	Value	Quoted from the page
Capacity	512Wh	Capacity 512Wh source
AC output	120V 50Hz/60Hz, 500W (Surge 1000W)	AC Output 120V 50Hz/60Hz, 500W (Surge 1000W) source
Weight	Approximately 13.4lbs	Net Weight Approximately 13.4lbs source
Dimensions	10.6 x 10.2 x 7.7inches	Dimensions 10.6 x 10.2 x 7.7inches source
Battery chemistry	LFP	Cell Chemistry LFP source
Cycle life	80%+ capacity after 3000 cycles	80%+ capacity after 3000 cycles source
USB-A	5V, 2.4A, 12W Max	USB-A Output 5V, 2.4A, 12W Max source
AC Input	100-120V 50Hz/60Hz, 660W Max	AC Input 100-120V 50Hz/60Hz, 660W Max source
Solar Input	11-50V, 13A, 220W Max	Solar Input 11-50V, 13A, 220W Max source
USB-C Input/Output	5/9/12/15/20V, 5A, 100W Max	USB-C Input/Output 5/9/12/15/20V, 5A, 100W Max source
DC Output	12.6V, 10A/3A/3A, 126W Max	DC Output 12.6V, 10A/3A/3A, 126W Max source
Discharge Temperature	14°F to 113°F/-10°C to 45°C	Discharge Temperature 14°F to 113°F/-10°C to 45°C source
Charge Temperature	32°F to 113°F/0°C to 45°C	Charge Temperature 32°F to 113°F/0°C to 45°C source
Optimal Operating Temperature	68°F to 86°F/20°C to 30°C	Optimal Operating Temperature 68°F to 86°F/20°C to 30°C source
Storage Temperature	14°F to 113°F (68°F to 86°F is best)/-10°C to 45°C (20°C to 30°C is best)	Storage Temperature 14°F to 113°F (68°F to 86°F is best)/-10°C to 45°C (20°C to 30°C is best) source
Car Input	12V/24V, 8A, 100W Max	Car Input 12V/24V, 8A, 100W Max source
DC5521 Output	12.6V, 3A, 36W Max	DC5521 Output 12.6V, 3A, 36W Max source

By rated capacity, the EcoFlow RIVER 2 Max Portable Power Station ranks 91 of 117 portable power stations listed here (1 = largest).

Runtime estimator

Uses the EcoFlow RIVER 2 Max Portable Power Station rated 512 Wh. Set your load and the share of rated energy you expect to get out.

Device load (W) Usable share (%)

About 4.4 hours at 100 W.

Prices by retailer

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Data checked on November 1, 2026. See how we research.

Sources

EcoFlow RIVER 2 Max Portable Power Station product page (checked 2026-11-01)