my last Maglite battery finally croak after about seven + year of usage . so after see the price of these item at a local retailer , I look online and find this item at substantial savings . so far so good , my ancient streamlight sl-20 have no idea there be yet another Maglite battery within it . after work in the Police Equipment business for decade , I determine from we repair department -lrb- I -rrb- , that Maglite battery outlast all other and be actually quite competitively price with the cheaper brand of knock-off battery on the market . it have be my experience that the Maglite battery can take slightly more abuse from fumble finger operator .