Where it fits
We favor this panel for campsite or roadside setups where you can point the front face toward the sun and leave the back exposed to reflected light. The integrated guide makes aiming part of setup rather than a separate accessory.
EcoFlow · United States
EcoFlow NextGen 220W Bifacial Portable Solar Panel review
Exact revision: NextGen; EF-Fold-G220-04 (User Manual V1.0)
We recommend the NextGen 220W Bifacial when you want a folding panel with a useful rear face and an integrated angle guide. Its added rear-side potential depends on giving reflected light room to reach the back.
View manufacturer product pageBatteryRank review
Our verdict
A strong fit for portable power-station owners who can match the panel’s input ratings and have a bright, open setup area. We like that the case, angle guide, and connection cable are included in the stated package.
View manufacturer product pageSpecifications below are manufacturer claims. Each reading opens its source and check date.
Review notes
Where it fits
What changes the decision
Tradeoffs
The rear face needs light
The back is designed to collect reflected light, so its contribution depends on the surface and surroundings. EcoFlow recommends smooth, light-colored ground for better reflection.
Check the power station input first
Before connecting, we would check cold-weather open-circuit voltage, total current including any rear-side contribution, polarity, and permitted wiring against the exact power station manual. EcoFlow says panel and device electrical limits determine compatibility; this dossier does not certify a pairing.
Keep the rear surface unobstructed
A shaded or covered surface reduces output. The manual advises clearing shade and debris from the panel and checking the angle guide as the sun moves.
Before connecting
Setup and compatibility
Open and aim
Take the panel out of its storage case, open the bracket, and face the junction-box side toward the sun. Adjust the bracket until the angle-guide shadow point reaches the center.
Connect with the supplied lead
Join the panel’s photovoltaic output connectors to the included solar-to-XT60i charging cable, then connect the cable to a compatible XT60 solar input. EcoFlow recommends the cable in the box and checking device input limits before use.
Confirm the full array limits
Before adding panels or choosing series/parallel wiring, compare the array’s total voltage and current—including rear-side contribution—with the exact power station manual. EcoFlow notes that panel open-circuit voltage and short-circuit current vary with temperature, and recommends checking array limits, polarity, and wiring before connection.
Read the exact power-station manual before pairing equipment. Our solar panel pairing guide explains the input checks, and the solar recharge deficit tool estimates whether a setup can keep pace with daily use.
Manufacturer documentation
Specifications
Every reading is marked claimed and links to the source used for this revision.
- Rated power, front side
220 ±5 Wclaimed. Show source
claimed sourceecoflow-service-us-prod.oss-us-west-1.aliyuncs.com ↗checked 2026-10-03- Rated power, rear side
175 ±5 Wclaimed. Show source
claimed sourceecoflow-service-us-prod.oss-us-west-1.aliyuncs.com ↗checked 2026-10-03- Conversion efficiency
25 %claimed. Show source
claimed sourceecoflow-service-us-prod.oss-us-west-1.aliyuncs.com ↗checked 2026-10-03- Cell type
TOPCon monocrystalline siliconclaimed. Show source
claimed sourceecoflow-service-us-prod.oss-us-west-1.aliyuncs.com ↗checked 2026-10-03- Open-circuit voltage
21.5 Vclaimed. Show source
claimed sourceecoflow-service-us-prod.oss-us-west-1.aliyuncs.com ↗checked 2026-10-03- Optimal operating voltage
18.4 Vclaimed. Show source
claimed sourceecoflow-service-us-prod.oss-us-west-1.aliyuncs.com ↗checked 2026-10-03- Short-circuit current, front / rear
12.4 / 9.9 Aclaimed. Show source
claimed sourceecoflow-service-us-prod.oss-us-west-1.aliyuncs.com ↗checked 2026-10-03- Optimal operating current, front / rear
11.9 / 9.5 Aclaimed. Show source
claimed sourceecoflow-service-us-prod.oss-us-west-1.aliyuncs.com ↗checked 2026-10-03- Bifaciality coefficient
80 ±5 %claimed. Show source
claimed sourceecoflow-service-us-prod.oss-us-west-1.aliyuncs.com ↗checked 2026-10-03- Panel weight
Approx. 7 kg (15.4 lb)claimed. Show source
claimed sourceecoflow-service-us-prod.oss-us-west-1.aliyuncs.com ↗checked 2026-10-03- Unfolded dimensions (W × L × H)
615 × 2,155 × 25 mm (24.2 × 84.8 × 1.0 in)claimed. Show source
claimed sourceecoflow-service-us-prod.oss-us-west-1.aliyuncs.com ↗checked 2026-10-03- Folded dimensions (W × L × H)
615 × 590 × 32 mm (24.2 × 23.2 × 1.3 in)claimed. Show source
claimed sourceecoflow-service-us-prod.oss-us-west-1.aliyuncs.com ↗checked 2026-10-03- Panel output lead
1.5 m; photovoltaic connectors adapted to MC4claimed. Show source
claimed sourceecoflow-service-us-prod.oss-us-west-1.aliyuncs.com ↗checked 2026-10-03- Included charging cable
Solar to XT60i; 2.5 mclaimed. Show source
claimed sourceecoflow-service-us-prod.oss-us-west-1.aliyuncs.com ↗checked 2026-10-03- In the box
Storage case; panel; solar-to-XT60i charging cable; Quick Start Guide, Safety Instructions, and Warranty Cardclaimed. Show source
claimed sourceecoflow-service-us-prod.oss-us-west-1.aliyuncs.com ↗checked 2026-10-03- Water and dust rating
IP68claimed. Show source
claimed sourceecoflow-service-us-prod.oss-us-west-1.aliyuncs.com ↗checked 2026-10-03
Exact model questions
Frequently asked questions
What are the front-side and rear-side ratings?
EcoFlow lists separate reference ratings of 220 W ±5 W for the front and 175 W ±5 W for the rear. These are not an additive combined-output promise; rear-side contribution depends on reflected light from the surroundings.
Does the rear panel face need direct sunlight?
The manual describes it as collecting reflected light from the surroundings and recommends smooth, light-colored surfaces to improve reflection. EcoFlow tells users to face the front side toward the sun.
Which cable connects the panel to a power station?
The panel’s photovoltaic connectors join the included solar-to-XT60i charging cable; the cable’s other end goes to a compatible XT60 solar-input port. The manual says to check the power station’s input range first.
Can I assume it works with every EcoFlow power station?
No. EcoFlow says compatibility depends on the panel’s electrical parameters and the power station’s solar-input parameters.
What should I check before wiring more than one panel?
Check total voltage, total current, polarity, and permitted series or parallel wiring against the exact power station manual. The panel manual says electrical output changes with temperature, so the array must stay within the receiving device’s limits under the planned conditions.
Evidence record
Sources
Each manufacturer source below carries its check date.
Reviewed by the BatteryRank Engineering Team for BatteryRank. Review date: 2026-10-03.