A solar watch is a timepiece powered by solar cells, converting sunlight into energy stored in a rechargeable battery, eliminating the need for regular battery changes. Known for eco-friendliness and low maintenance, they're favored for their self-sustaining power source.
Charging lithium batteries is delivering regulated electrical current to store energy inside the battery cells for subsequent use in electronic devices, while using a precise charging voltage and current to avoid overheating and guarantee longevity.