A few months ago, Maglite LED upgrade only used to be possible with the application of certain limited numbers of kits that used to fall under the third party. It was done basically by going beyond the authorized warranty period that comes from the part of the manufacturer. But no such voiding of rules has to be done these days. This brand has come up with two models that falls under the Mini line; these are basically upgraded versions and then again marketed as completely new items.
The models of the C and the D series of this brand are nothing but Maglite LED upgrade kits. But there are also other ways that are obtained for transferring the flashlight models to LED lights. If you think that the third party kits were the best ways of Maglite LED upgrade procedure then you can always use them these days. These kits help you in upgrading almost any Mag model. But the sole problem with these devices is that they are not manufactured to have the same consistent quality. If you come across any such kit where the label reads that usage of it might void the original warranty that comes with the Mag device then that means that it will not be appropriate for you to make use of those kits. A bit of research and a searching for them in the right places will help you to get your hands on those kits that are not meant to violate the original warranty period for Maglite LED upgrade.
Maglite LED upgrade can also be carried out by making use of the kits that forms good compatibility with the LED bulbs. All it needs is to replace the old bulbs with that of the advanced LED models. These are available in packages of both multitude and single bulb kits. But if you are up to Maglite LED upgrade processes then the best option can be the single bulb kits.