I have be work night shift highway patrol work for go on 19 year . I be still use the same rechargeable mag Lite that I be issue in 1990 -lrb- the same model as list here -rrb- . I have wear out half a dozen squad car , and receive a new mounting\/charger bracket with each new car , but always keep the same flashlight . I have have to replace the little rubber button over the switch a couple of time as my thumb wear through it finally . but the light be the same one I be originally issue . it be very , very bright and completely reliable . it have be drop -lrb- if you drop it switch on , it will probably knock the bulb dead -rrb- , submerge , chill to 17 below and 150 above , and switch on\/off literally ten of thousand of time . it be have a few high speed ride outside lay on the air intake below my windshield wiper . I have knock out car window with it , have use it as a impact weapon , and have even use the butt end for a hammer . I have work numerous squad car crash , and have never see a instance of a maglite that have jump out of its mount bracket due to a crash . there be room in the endcap to keep a spare bulb tuck in a piece of foam or napkin . the bulb last a long time and be easily replace . the battery stick last a long time -lrb- about 2 hour on a charge -rrb- and it be as easy to replace as change any flashlight battery . if you use the light for public safety work -lrb- police , fire , EMS , security -rrb- , and keep it in you in-car mount\/charger bracket , you will likely never see it go dim ... until it reach end of life , which be every couple of year with heavy use . it be big enough to use for self-defense , and can easily be carry on a duty belt by slip it though the handcuffs carry there , or you can use a ring make for that purpose , or just slip it inside you beltline behind you back . and -lrb- this be important -rrb- it be big enough to be carry by tuck it under you armpit , thus leave both hand free . you can not do that with small flashlight . it be also big enough not to be easily lose in the grass in the dark , like some of the hi-tech minus flashlight . I like this light so much that about 10 year ago I purchase another one out of pocket and mount the charger on the workbench in my garage . that have turn out as equally successful as my shop flashlight . when you buy this kit , you 'll get one charger\/mounting sleeve that you can mount in either home or car , and they include the proper electrical hardware to power it up by plug into either home or car power source . that be my experience . this thing be a workhorse and I consider it a `` partner '' at work . I highly recommend it .