WD40 (or any other penetrating oil) and long nose pliers. If your 10440 does not have a nipple, then it’s a bit harder. You’ll have to go outside, wear gloves and safety glasses and drill a small hole on your battery. Then, put a screw in this hole and you should now be able to pull it out with pliers. Of course, throw this battery in the garbage…
Never had this problem , but remember previous posts on this subject and my favourite method was to tape the flashlight securely to the head of a hammer!
Then with the open end of the flashlight pointing down smash the hammer into your work bench , hitting the bench with the hammer shaft so the head overhangs the bench , the sudden stop of the hammer/flashlight causes the battery to fly out onto the floor :))
Get solder iron good and hot, put solder blob on battery end, then use wire which you have pre tinned and proceed to attach wire to solder blob.
Now pull battery out then remove solder with solder sucker.
I’ve had fantastic luck duct taping lights to the end of a broomstick at a right-angle to the stick and smashing them against a surface that the end of the stick will clear, the battery will continue moving in the direction of the swing and, after a couple hits, exit the tube.
That is strange. The Efest 10440 is very loose in my Pineapple Mini. Was there some sort of shipping wrapper on your battery that you didn’t take off first? I can’t imagine the machining of the battery tube was that far off.
Wouldn’t the opposite happen and the shrink wrap expand?
I had an 18650 get stuck in a first generation DQG 18650 mini once. This was the original twisty version of the light. The tube tapered as you got closer to the spring. If you stuck a fat cell in it would fall in and then get stuck.
I only managed to get it out when I drilled a tiny hole in the bottom of the tube and inserted a large paperclip to push the cell out. I don’t recommend this strategy unless you’re really frustrated as it caused permanent damage to the light including destroying the waterproofing.