... time when battery is full: 3h for 8 LED, 6h for 4 LED.7)FM radio working time when battery is full: ... charged by solar for 3h, 8 LED can work for 1h, radio can work for 4 min, alarm can work for 3 min.9 ... )Be charged by hand for 1 min, 8 LED can work for 8 min, radio can work for 1 min, alarm can ... work for 1 min.10) light operation: ...