E40 · 40W FOLDABLE SOLAR CHARGER
Portable solar power for a more connected campsite.
Bring USB-C, USB-A and DC charging to your outdoor kit with the E40. This 40W monocrystalline solar panel folds for transport and weighs 750g, giving you a practical way to charge compatible portable electronics during camping, hiking and longer trips.
Made for everyday use
A closer look.
Up to 40W from USB-C PD
The USB-C PD 2.0 output is rated at up to 40W for compatible devices. It gives you an option for suitable phones, tablets, power banks and other USB-C equipment. Actual charging power depends on the device's requirements and the solar power available.
USB-A and 19V DC alongside USB-C
Use the QC3.0 USB-A port for compatible USB devices, with profiles up to 18W. A separate 5.5 × 2.1 mm DC output supplies up to 19V/2.1A for equipment with matching input requirements, including suitable small power stations.
Folds down when it is time to move
The E40 opens to 1240 × 282 mm and folds to 207 × 282 × 44 mm for storage. Its 750g weight and two included carabiners support a portable setup. At your destination, open the panel fully and position it in direct sunlight.
A campsite charging station
Set the panel in an unshaded spot to charge a compatible power bank or USB device while you spend time at camp.
A longer outdoor itinerary
Pair the DC output with a compatible small power station to add a solar charging option during daylight stops.
Confirm your device's input before connecting
Use suitable cables and check USB charging requirements. For DC equipment, confirm acceptance of 19V, the 5.5 × 2.1 mm connector, correct polarity and input limits. USB-C laptops require compatible PD input and suitable power requirements; the connector alone does not establish compatibility.
In the box
E40 40W solar panel and two carabiners.
Know your equipment
Technical specifications
Connections, power ratings and practical details at a glance.
| Rated panel power | 40W |
|---|---|
| Solar cells | Monocrystalline |
| Conversion efficiency | Up to 24% |
| USB-A output | QC3.0; 5V/3A, 9V/2A or 12V/1.5A; 18W max |
| USB-C output | PD 2.0; 40W max |
| DC output | 19V / 2.1A max; 5.5 × 2.1 mm |
| Folded dimensions | 207 × 282 × 44 mm |
| Unfolded dimensions | 1240 × 282 × 3 mm |
| Net weight | 750g |
Rated panel power is measured at 1000W/m² irradiance, 25°C and AM1.5; actual output varies with conditions and device requirements. California residents: WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov.
Before you get started
A few useful answers.
Is this the E40PRO?
No. This page is for the E40. Check the model name and dimensions when comparing FlexSolar 40W panels.
Can I charge a USB-C laptop?
Check that the laptop accepts compatible USB-C PD charging at the available power. The port is rated at up to 40W; some laptops need more power or a different charging profile.
Can all outputs deliver their maximum at once?
No. The output ratings are individual limits, and connected devices share the solar power available from the 40W panel.
How should I set up the panel?
Open it fully outdoors, aim it toward direct sunlight and keep the solar surface unshaded. Keep connected devices and electrical connections dry.
