I would NOT recommend trying to put it on the positive side of the cell.Īn alternative: Take an existing (discharged) D-cell and solder wires across the terminals. There seems to be no need to insulate the metal block as it’s just going to ground out to the same metal frame that’s the ground plane. If I actually tried this, I’d probably find that a small tab/spring is the preferred option. It needs a tiny spring embedded or you can do optional step 4 for extra cheapness.Ĥ) Pull out the spring and place the block behind the spring after putting the lithium cell in the flashlight. I mean, everyone has a barrel full of their soldering tips and old solder, right?ģ) Make a block the same length as what’s needed to make the lithium cell reach both terminals. You know what… since this is a hacker site, and the best hacks are elegantly simple on the level of the Wozniak drive controller logic, here’s my suggested project:ġ) Get a 32xxx lithium cell (longer is better but no more than 2 D-cells).Ģ) Get some waste lead from your solder barrel. Posted in LED Hacks Tagged maglite, maglite 18650 conversion, maglite battery hack Post navigation Unfortunately this hack does reduce the Maglite’s thief-head-bashing-ability with such light batteries.
Aa to d battery adapter driver#
If you need more inspiration for retrofitting flashlights with LEDs check out this switch-mode driver board hack. In a past project also replaced the halogen bulb with a high power LED, making this flashlight even more powerful - and because the LED driver accepts a broader range of voltages it lasts longer too. It’s a pretty simple hack we admit, but definitely super handy. To center the batteries inside the Maglite he used a few strips of cardboard from a case of beer - again, this is just making use of what was available. That being said however, if you wanted to do a professional job on it, nothing is stopping you! A 3D printed 18650 to D-cell adapter would look quite nice… Finally, in order to make the battery spring contact the smaller surface area of the lithium cells, all you have to do is flip it around backwards and slightly bend the inner spring out. It doesn’t look professional, but it does the job and keeps all the components unmodified so the lithium cells can be used elsewhere if needed.
You could solder tabs on the 18650’s so they better mimic a typical alkaline battery cell, but notes that because most solder tarnishes the electrical conductivity isn’t always the greatest. Not looking to purchase any components performed this hack using simple recycled household parts.
Aa to d battery adapter upgrade#
So decided to upgrade it to make use of the ever-so-common, 18650 lithium-ion battery. Maglite’s used(?) to be the king of flashlights, but replacing those pesky D-cell batteries is kind of ridiculous in this day and age.
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