| Primary job | Stores a useful reserve of electricity before you need it. | Generates small amounts of electricity when daylight and positioning are good. |
| Best UK use case | Winter power cuts, home readiness, caring responsibilities, car camping and keeping several devices running. | Camping, hiking, summer travel, topping up a power bank and extending small USB devices during daylight. |
| Reliability in bad weather | Works regardless of darkness, cloud or rain if it was charged beforehand. | Output falls heavily in cloud, shade and short winter daylight, and most panels need careful positioning. |
| Power level | Can recharge several devices and may run some low-wattage mains kit within its rated limit. | Usually best for phones, power banks, head torches and other USB devices; not for household appliances. |
| Maintenance | Needs periodic top-ups and should be checked before Met Office warnings or travel. | Needs little storage maintenance, but must be deployed correctly when you actually need power. |
| Portability | Heavy and bulky compared with a charger, better for home, car boot or base-camp use. | Flat and light enough for a rucksack, though larger folding panels are still awkward in high wind. |
| Typical price band | Roughly 200 to 1,000 pounds depending on capacity, battery chemistry and output. | Roughly 25 to 120 pounds for useful USB solar chargers and folding panels. |
