Charge a smartphone in four hours on a sunny day with the E.FLEX21 Portable Solar Panel from Renogy. The three-section panel measures 18.7 x 11.4" when open, but packs down to an easily stowed 11.4 x 6.2" when not in use.
Boasting a conversion efficiency rate of up to 25%, the panel has two USB ports (5V @ 4.2A total) for plugging in devices such as phones, tablets, and action cameras. An adjustable kickstand helps position the panel where it can best catch the sun's rays. The auto-optimization function automatically reconnects the panel when the sunlight returns after charging is interrupted by clouds or other obstruction. Technology by iSolar optimizes charging while preventing your device from overheating.
Features
- 21-watt output with two USB ports for charging electronics
- Up to 25% conversion efficiency
- iSolar technology optimizes charging, protects connected devices from overheat damage
- Auto-optimization function automatically reconnects after charging is interrupted by passing clouds
- Adjustable kickstand for best positioning
- Measures 18.7 x 11.4" open, 11.4 x 6.2" folded
Charge Times (Ideal Conditions)
- Smartphone: 2-4 hours
- Tablet: 4-6 hours
- Action camera: 2-4 hours