Very clear explanation. Thank you!I'll try to explain. First, an image so you know what I'm talking about.
Obviously the squonk tube will be in the bottle and not in the mod like in the image.
The (-) is spring loaded, the (+) can't be seen because it is slightly covered by a plastic rim that will fit around a battery (+) but prevent contact with a battery (-), that's the physical reverse battery protection.
Now there's little room to place the batteries, you'll have the battery almost vertical (taking care to not touch the squonk tube recepticle with the (+)) and press down on the negative to be able to slip it in under the positive. That isn't really the part where you can damage the wraps.
When taking the battery out it's essential that you do so bottom first, if you just rip it out you can damage your wrap at the (+).
There's a trick: see that ribbon? Put it downwards before installing the battery and it will pull out the battery bottom first.
It doesn't take long for it to get easier, it's just very different to other mods. I'd say it's a combination of the spring slacking a bit and you getting used to that way of putting batteries in and out.
Does the secured end of the ribbon slide up and down or do you just pull the unsecured end down toward the negative end of the battery?