DIY BATTERY ADAPTER FOR FINGER-TO-FINGER BATTERIES

Send

Sometimes such a nuisance as unexpectedly sitting down (for example, in a watch or an alarm clock!) AA batteries, in the common people is “finger-type”, and you only have pinky ones (such as “AAA”). You can of course go and buy new ones at the store, or recharge if you have rechargeable batteries. But it would be much more convenient and faster if you had such an adapter for batteries. This will help to postpone the purchase of batteries if you do not want to leave the house for such a trifling purchase.

Will need

To make this adapter, we need the following materials and tools:

Stationery knife,
self-adhesive colored oilcloth,
file,
flat screwdriver
emery machine
latex gloves,
protective glasses,
paper,
foil,
second glue
and an unnecessary, shrunken AA size battery.

IMPORTANT: the battery must be with a solid shell, such as a capsule, and not with seam-joined edges! Alkaline elements are exactly what you need.

Making an adapter for batteries

So, before starting work, all safety precautions must be observed! Wear gloves and glasses. Next, we take our battery, free it from the label (if any) using a stationery knife.

Then carefully cut one fourth of the battery from the bottom (minus side). This is approximately 15 millimeters.

If there was liquid in the battery, let it drain and then continue to work. After removing the specified part, with a flat screwdriver we pick out the contents of the battery in a sealed bag or container, with its further disposal as waste of class 1-2.

We rinse the product with water. After the above procedures, you should get an all-metal capsule. To remove the burrs and align the cut edges, use a file.

Next, we need to make a filler so that the small battery does not hang in this adapter. To do this, take the little finger battery and wrap it tightly with paper until it comes in caliber to the finished capsule.

Another point: so that the twisted roll does not curl inward when we pull out the little battery from it, it is necessary to glue a piece of double-sided tape on the first turn. Next, we roll out a small, not dense ball from foil (so that later it would be easy to adjust the desired length by squeezing this ball) and put it in a capsule. From above we insert a roll of paper made earlier and align it with the edges of the capsule using a clerical knife.

We fix the roll in the capsule with second glue by soaking the edges. We glue the resulting product with self-adhesive oilcloth. Heat-shrink tubes of a suitable size can also be used.