Only 20 minutes' claimed continuous use on a full charge (it began dimming in 15min). But once the spotlight had gone right out (25min) there was still sufficient power to run the tiny (70mm long, 3mm dia) 3W fluorescent tube for another 4.5hrs as the battery recovered, so you won't be left in the dark. Gives a very adequate working light despite its size. No claim is made for its duration on a full charge, which I measured at 14.5 hours.
Test button with three coloured LEDs shows state of charge. Well designed and made, with main beam lock-on/lock-off trigger switch and a rear, labelled press-switch for the side tube. Rubber lens ring acts as non-slip base to use this as a work light, while two moulded fins make it fairly stable when put down.