I have multiple battery holders that have like 39 x AA slots but only 25 x AAA slots. I was wondering if anyone has found a site that sells small plastic inserts that I could drop into the AA slots to make them into an AAA battery holder, I mainly use these holders for my eneloop/amazon(eneloop)/Ikea LADDA batteries and would like to use my existing holders b/c most of the ones for sale always have more AA than AAA slots.
anyone know of anything like this?
Do you have access to a 3D printer- it wouldnât be too hard to design / make something.
I donât have access to a 3d printer. I wasnât sure if the community here might have already come up with something like this. iâll start searching for some sort of 3d printing service online to see if there are any options.
Iâm thinking one would determine the average diameter of an AA cell and then add sufficient inner diameter to match an aaa cell, with the height being at or slightly above the tray. I will probably need to use the higher capacity nimh eneloops the ?xxx? or pro to make sure there is sufficient spacing.
Throw âSTLâ into any search you try- thatâs the common type of file 3D printers use. Printables is one website that comes to mind.
For storage, surely doesnât have to be this accurate? AA is 14mm diameter, 50mm long and AAA is 10 mm diameter for 44mm long.
This Wikipedia article is good
The only problem you have is the difference in length between AA versus AAA. You have to put on the floor (in the background) of the AA slots a strip along the ground of good rubber foam of the approximate thickness of the difference in batteries, and ready !!! Easier impossible. I canât think of better and more solution.
Greetings.
thanks for all the ideas! i can def find some foam to fill in for now, but I really wanted a cool solution with an insert since i have multiple batteries trays and having the battery just drop in precisely to the slot is so nice.
No, no, you have to go to the practical, and look for the easiest and most elegant solution, if what you want is not to complicate your life.
Obviously that would be to sell all the batteries and flashlights except the one you use, and maybe a backup.
Tubing insulation foam?
Or something like this?
Dc38,
I found two decent options, one WAY more expensive than the other, but much closer to a hard plastic.
$3.73/ft
$33.76/ft
McMaster-Carr (wonder how I would even cut this stuff cleanly!)
do you think the cheaper one would be a decent option?
I donât knowâŚfor what itâs worth, my inch micrometer reads over 0.4" on eneloop and alkaleakâŚunless im reading it wrong.
Dc38,
thanks for the feedback. So, on the larger AAA nimh batteries like the eneloop proâs or the ?Ladda? variants, the 10mm Inner Diameter might be a problem, Ugh! Iâll do some measurements on my end, because this does seem like the best option for an âinsertâ.
What were your thoughts on the specfic tubing at McMaster, otherwise?
The material should be sufficient for storage, though you might see some yellowing or brittling over the years. Should be ok though. As for cuttingâŚhigh speed finer teeth, maybe? I donât remember the type of blade used, but I used to miter some diffuser material for luminaires. Very fast spinning, and if the plastic was secured prior to cutting, there would be minimal to no burring/melting.
The cheapest, simplest, quality option should suffice for storage. If you donât mind semi-ghetto solutions, you could always measure out used toilet roll cardboardâŚit sounds really negative, but toilet cardboard is quite springy and might help to secure your batteries, and for even cheaper.
Just toss in a couple silica gel packs for humidity control and you should be good to go
Cardboard is a solid option. I used to make spacers out of cardboard to run rechargeable AA/AAAâs in cheapo D-cell lights.
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