EcoFlowSpecification analyzed
EcoFlow River 2 Max
R2Max-512
Best value ultralight for weekend campers.
EcoFlow's smallest LFP box — featherweight, fast charge, perfect for casual daypower.
Released 2022All EcoFlow reviews
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48
Fair · /100VerdictRecommended at the right price
Capacity512 Wh
Output500 W
Weight7.7 lb
Best for
Ultra-portable 512Wh camping backup at bargain price
Avoid if
You need to run appliances pulling >500W
What It Can Run
- Phones, tablets, e-readers
- CPAP (no humidifier)
- Lights, laptop charging
Runtimes assume inverter efficiency, depth of discharge and a duty cycle for compressor appliances. See the runtime calculator for exact estimates.
Performance Breakdown
Usable capacity
4
Inverter output
9
Charge speed
100
Solar input
18
Battery longevity
45
Portability
100
Overall value
80
Warranty
80
Ports & expandability
40
By Use Case
One product ranks differently for each scenario — see where this one fits.
Home Backup
23
Camping
64
RV Travel
28
Solar Use
43
Full Specifications
Battery capacity512 Wh
Usable capacity425 Wh
ChemistryLiFePO4
Cycle life (80%)3,000 cycles
Inverter output500 W
Surge output1000 W
Wall recharge0.66 hr
Solar max input220 W
AC outlets3
USB-C ports2
USB-A ports1
12V carport1
DC outputs1
Weight7.7 lb
Dimensions9.8 x 6.1 x 7.1
ExpandableNo
UPS functionYes
App controlYes
Warranty5 yr
Release year2022
Pros & Cons
Pros
- Just 7.7 lb
- 60-min full wall charge
- 5-yr warranty
- X-Boost 500W to 1000W surge
Cons
- 500W max inverter limits who can use it
- If you want more, get R2 Pro
Major weaknesses: 500W inverter ceiling · No expansion.
Final Recommendation
Recommended at the right price
Best value ultralight for weekend campers.