Which EcoFlow solar panel is the best value?
The 45W Portable Solar Panel - 45W Type-C ranks #1 of 3 on value, at $1.756/W. The 100W Flexible Solar Panel comes next at $1.990/W, and the 110W Portable Solar Panel sits at $2.355/W. Cost per watt shows what you pay for each watt of rated output.
It helps you compare panels of different sizes. But it leaves out the connector, the warranty and how you plan to use the panel. The 45W Portable Solar Panel - 45W Type-C is also the cheapest to buy outright at $79.00, against $199.00 for the 100W Flexible Solar Panel and $259.00 for the 110W Portable Solar Panel.
The right pick depends on how much power you need, not only on price.
| Product | Best current price | Cost per watt | Value rank |
|---|---|---|---|
 EcoFlow 45W Portable Solar Panel - 45W Type-C | $79.00 at EcoFlow | $1.756/W | #1 of 3 |
 EcoFlow 100W Flexible Solar Panel | $149.00 at EcoFlow | $1.990/W | #2 of 3 |
 EcoFlow 110W Portable Solar Panel | $249.00 at EcoFlow | $2.355/W | #3 of 3 |
Why does the 45W Portable Solar Panel - 45W Type-C rank first on cost per watt?
It ranks first because its value of $1.756/W is lower than $1.990/W for the 100W Flexible Solar Panel and $2.355/W for the 110W Portable Solar Panel. At EcoFlow it sells for $79.00, which comes to $1.76 per watt. The 45W Portable Solar Panel - 45W Type-C is rated at 45 W.
A small panel keeps the entry cost low. Its voltage at peak power is 22 V, and its open-circuit voltage is 25.6 V. Its current at peak power is 1.98 A.
Its short-circuit current is 2.06 A. Its Voc temperature coefficient of -0.25 %/°C is closer to zero than the -0.33 %/°C that both other panels list. A figure closer to zero means the voltage moves less as the panel gets hot or cold.
Check that the cable end matches the input port on your device.
What sets the 100W Flexible Solar Panel apart?
The 100W Flexible Solar Panel has the longest warranty here at 3 years, while the other panels list 1 years. Check what a warranty covers, not only how long it lasts. It costs $199.00 at EcoFlow, or $1.99 per watt.
That places it #2 of 3 on value in this article. The panel is rated at 100 W and ends in an mc4 output connector. Peak power voltage is 17.1 V, and open-circuit voltage is 20.3 V.
Its current at peak power is 5.9 A, and its short-circuit current is 6.3 A. If you plan to fix a panel in one place, think about how it will attach.
How does the 110W Portable Solar Panel handle heat and cold?
EcoFlow lists an operating range from -20 °C to 85 °C for the 110W Portable Solar Panel. It also has the highest rating in this group at 110 W, next to 100 W for the 100W Flexible Solar Panel and 45 W for the 45W Portable Solar Panel - 45W Type-C. More watts from each panel can mean fewer panels to carry and set up.
You pay more for that output, as EcoFlow lists it at $259.00, or $2.35 per watt. On value it ranks #3 of 3, at $2.355/W. Its peak power voltage is 18.4 V and its open-circuit voltage is 21.8 V.
Rated current is 6 A at peak power, and short-circuit current is 6.5 A. Like the 100W Flexible Solar Panel, it uses an mc4 connector. The warranty is listed as 1 years.
What do the voltage and current figures mean for your setup?
Keep a panel's open-circuit voltage under the solar input limit of your power station or charger. Open-circuit voltage is the top voltage a panel puts out when nothing draws power. Your power station or charger will list a solar input limit.
Cold weather pushes panel voltage up, so leave some room below that limit. The 45W Portable Solar Panel - 45W Type-C has the highest open-circuit voltage here at 25.6 V, followed by the 110W Portable Solar Panel at 21.8 V and the 100W Flexible Solar Panel at 20.3 V. Current matters as well, since solar inputs usually list a top current.
On short-circuit current, the 110W Portable Solar Panel leads at 6.5 A, ahead of 6.3 A for the 100W Flexible Solar Panel and 2.06 A for the 45W Portable Solar Panel - 45W Type-C. If you wire panels together, voltage adds up in series and current adds up in parallel. Check both totals against the input limits before you connect anything.
How should you choose between these EcoFlow panels?
Start with what you want to charge and how much power it uses in a day. Then match the panel output and connector to the input on that device. If the lowest cost per watt is your goal, the 45W Portable Solar Panel - 45W Type-C leads at $1.756/W, ahead of $1.990/W and $2.355/W for the larger panels.
For more output from each panel, the 110W Portable Solar Panel at 110 W edges past the 100W Flexible Solar Panel at 100 W. If cover after purchase matters most, the 100W Flexible Solar Panel with its 3 years of warranty stands out. Whatever you pick, read the panel label and the input limits on the device you plan to charge before you plug in.