the flashlight be brilliant , literally . once it be charge for the first time it be unreal . and for occasional or rare usage it be extremely practical . but , if you use it for several hour a day , you may find that it take too long to get a full charge back into the battery . in fact , the only chance you can get it to fully charge be over the weekend . two battery ? how can you charge the spare battery pack when it have to be in the flashlight -lrb- which have to be in the charger -rrb- to recharge ? mag Instruments be apparently work on the problem , but to this date they do not have a rapid charger , or a charge cradle for a battery pack only . you could of course buy 2 flashlight and use they on alternate day . rather expensive though .