EcoFlowSpecification analyzed
EcoFlow 400W Portable Solar Panel
EF-400
Best pairing option for EcoFlow station owners.
EcoFlow 400W foldable monocrystalline panel — high-output ETFE/IP68.
Released 2023All EcoFlow reviews
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28
Weak · /100VerdictRecommended at the right price
Capacity0 Wh
Output— W
Weight35 lb
Best for
Best compatibility with EcoFlow stations; ETFE + IP68 weatherproof
Avoid if
You don't already have an EcoFlow or compatible MC4 station
What It Can Run
- Charges Delta Pro / Delta Pro 3 in a few hr of sun
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
0
Inverter output
0
Charge speed
40
Solar input
0
Battery longevity
0
Portability
73
Overall value
100
Warranty
0
Ports & expandability
20
By Use Case
One product ranks differently for each scenario — see where this one fits.
Home Backup
4
Camping
35
RV Travel
17
Solar Use
19
Full Specifications
Battery capacity0 Wh
Usable capacity0 Wh
ChemistryLiFePO4
Cycle life (80%)—
Inverter output— W
Surge output— W
Wall recharge—
Solar max input— W
AC outlets0
USB-C ports0
USB-A ports0
12V carport0
DC outputs0
Weight35 lb
Dimensions41.4 x 27.4 folded
ExpandableNo
UPS functionNo
App controlNo
Warranty1 yr
Release year2023
Pros & Cons
Pros
- 400W monocrystalline
- Waterproof IP68
- Pairs perfectly with EcoFlow parallel ports
- Industry-leading lightweight
Cons
- Premium price
- Heavy 35 lb
Major weaknesses: Premium $899 retail.
Final Recommendation
Recommended at the right price
Best pairing option for EcoFlow station owners.