Our solar power bank, with a capacity of 50,000 mAh and high-efficiency solar panels, typically lasts 5-6 days on a single charge. This estimate assumes moderate sunlight exposure, providing around 5 hours of direct sunlight per day. On sunnier days, it can recharge around 10,000 mAh, sufficient to power devices for a day. During cloudy days, the power bank relies on its battery capacity. Actual performance may vary based on environmental conditions and device usage.