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With an energy conversion efficiency of up to 22%~25%, Renogy E.FLEX 21 Portable Solar Panel utilizes sunlight and transforms it into usable electric currents for powering your essential electronics.
| Solar panel peak wattage | 21W |
| Solar panel type | Polycrystalline Solar Panels |
| Brand | RENOGY |
| Solar panel power voltage | 7.2V |
| Features | Weather-Resistant |
| Solar panel amperage | 3.7A |
| Height | 0.8 in (2 cm) |
| Mount type | Roof |
| Connection | Usb |
| Rec. use | Boat |
| Manufacturer | Renogy |
| Shape | Rectangular |
| Color | Black |
| Accessories | 23.6 in / 60 cm Micro USB Cable|USB-A to USB-C Cable|2 Carabiners |
| Material | Silicon |
| Number of solar panels | 1 |
| Weight | 28.9 oz (819.32 grams) |
| Maximum input voltage | V |
| Product line | E.FLEX |
| Model | R21EF |
| Activity | Outdoor Activity |
| Color category | Black |
Ideal for campers and hikers needing a compact and lightweight power source for their devices while off-grid.
Perfect for travelers relying on devices like laptops and smartphones, ensuring their gadgets stay charged remotely.
Useful for those wanting a dependable power solution for home or vehicle in case of emergencies or power outages.
May not support high-energy devices effectively, as it has limited output compared to larger solar power solutions.
Not suitable for indoor charging since it requires direct sunlight to function efficiently and generate power.
People looking for a very low-cost power option may find this product relatively expensive compared to alternatives.
Renogy E.FLEX 21 Portable Solar Panel,with USB-C Port for Smartphones, Generators, Rechargeable Power Supplies, Laptops, Off-Grid Outdoor, Camping with Adjustable Nylon Kickstand
Despite mixed reviews from customers, the solar panel charger seems to work fine for some. One customer reported that it charged their phone from 5% to full in about an hour and a half. However, the majority of reviewers had negative experiences with the product. Many customers complained that the solar panel charger never worked for them, even after multiple attempts in the sun. One customer mentioned that they bought it specifically for camping and were disappointed that it did not function as expected. It is worth noting that the packaging of the product could be misleading, as one customer pointed out that the pack sold in stores only contains one panel. This could cause confusion for those who expect to receive multiple panels. Overall, the performance of the solar panels did not impress most customers, with many reporting that it did not charge their devices properly or at all.
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