This adapter is for flash light pewered with 3 pcs of AAA batteries.
These torches are cheap and quite common, but problematic and not economical to power. You need three batteries, but they sels in packs of four. If you replace primary batteries with NiMH, than you get next problem: the most cheap chargers can chare NiMH batteries only in pairs, ie kan charge two or four at a time. Obvously problem is to charge three batteries in a simple charger.
I have replaced batteries in all my torches by Li-ion rechargable batteries of size 18650 (18 mm in diameter and 65 mm long).
Li-ion batteries are very common. They keep lot of energy, are not too expensive and are simple to charge.
Print this adapter, remove original battery holder for 3 AAA batteries. Install Li-ion battery together with this adapter into your flashlight.
How to charge?
How to get Li-ion batteries?
Buy at some reputable store. Do not buy UltraFire or similar on Aliexpress! This is completely garbage. Better solution is to disassemble an old laptop battery, but this is another story…
The another shorter adapter is for a bit shorter 18500 batteries, if you need.
The author marked this model as their own original creation.