EcoFlow 220W Bifacial Portable Solar Panel vs Renogy 400W Portable Solar Panel Blanket
Buy the EcoFlow 220W if you want a rigid bifacial panel that collects light from both sides and folds into a kickstand case for camping. Buy the Renogy 400W blanket if you need maximum watts per setup and a flexible panel that packs flat over a van roof or tent. The Renogy delivers roughly 400W against EcoFlow's 220W, but it is a blanket with no listed kickstand or bifacial gain, so the EcoFlow is easier to aim at the sun.
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Choose the EcoFlow 220W if you want a bifacial rigid panel with a built-in kickstand case and higher per-watt efficiency at 23%.
- Bifacial design captures reflected light from the back, adding output beyond the 220W rating.
- 23% efficiency is high for a portable panel.
- Kickstand case makes angle adjustment easy.
- 18.4V Vmp pairs with many 12V solar charge controllers and power stations.
What separates them
| EcoFlow 220W Bifacial Portable Solar Panel | Renogy 400W Portable Solar Panel Blanket | |
|---|---|---|
| Rated wattage | 220 W | 400 W |
| Panel type | Bifacial rigid panel | Flexible blanket |
| Conversion efficiency | 23% | Not listed |
| Voltage (Vmp) | 18.4 V | 36 V |
| Current | 8.8 A short circuit, 12 A max | 11.9 A |
| Mounting | Kickstand case, adjustable | Folds flat, no stand listed |
| Weight | 9.5 kg (about 21 lb) | Not listed |
| Best use | Aiming at sun on a campsite | Flat packing and large arrays |
Price history
- EcoFlow 220W Bifacial Portable Solar Panel: lowest $399.00 on Nov 1 at Amazon.
- Renogy 400W Portable Solar Panel Blanket: lowest $339.99 on Nov 2 at Off Grid Stores.
Prices at every store
EcoFlow 220W Bifacial Portable Solar Panel
- AmazonCheck price at Amazon
- B&H Photo-Video AudioCheck price at B&H Photo-Video Audio
Renogy 400W Portable Solar Panel Blanket
- Best BuyCheck price at Best Buy
- Off Grid StoresCheck price at Off Grid Stores
- RenogyCheck price at Renogy
Specs compared
| Spec | EcoFlow 220W Bifacial Portable Solar Panel | Renogy 400W Portable Solar Panel Blanket |
|---|---|---|
| Voltage | 18.4V (Vmp) | 36V |
| Wattage | 220 W | 400W |
| Amperage | 8.8 A (Rear, Short circuit current) | 11.9 amperes |
| Conversion Efficiency | 23% | — |
| Battery Capacity | 50Ah extendash200Ah (range of compatible lithiu… | — |
| Electrical Current | 12A | — |
| Electrical Efficiency | 23% | — |
| Solar Panel Wattage | 220 W | — |
| Solar Panel Type | Bifacial | — |
| Solar Panel Voltage | 18.4V (Vmp) |
What reviewers say
EcoFlow 220W Bifacial Portable Solar Panel
Owners of EcoFlow's bifacial panels generally report solid charging performance in direct sun and like the built-in kickstand. The common complaints are weight and bulk for portability, and real-world output below the 220W rating unless conditions are ideal.
- OutputMixedOwners see good charging in full sun but rarely the full 220W.
- Bifacial gainPraisedThe rear face adds measurable watts when set over light, reflective ground.
- WeightCriticisedAt 9.5 kg it is heavy to carry far from the car.
Questions and answers
- Which panel charges a power station faster?
- The Renogy 400W, on paper, because it is rated at nearly twice the wattage. Real output depends on sun angle and shading, and the EcoFlow's bifacial gain narrows the gap somewhat.
- Is the EcoFlow worth it over the Renogy?
- Yes if you value the kickstand, bifacial gain and 23% efficiency in a smaller setup. No if you mainly need the most watts for the money and space.
- Which is better for a van roof?
- The Renogy blanket, since it folds flat and can drape over a curved roof. The EcoFlow's rigid frame and kickstand suit ground or table setup instead.
- Do both work with 12V systems?
- The EcoFlow's 18.4V Vmp is a close match for 12V charge controllers. The Renogy's 36V needs an MPPT controller rated for that input.
- Which lasts longer?
- Rigid glass-front panels like the EcoFlow generally hold up better to repeated setup and weather. Flexible blankets are more prone to creasing and heat damage over years of folding.