the longer battery is an 18650 which apparently doesn't exist in my vocabulary as I constantly referred to it as an 18350..
Just a quick looky at the Segelei Telescopic mod I purchased. takes 18350 up to 18650 size cells and everything in-between.
For the price I think its a great little mod , really well put together.
I didn't need to find a different spring or snip the included one, I just decompresed the spring that came with it. with the aid of a bic pen just push the spring inside out, reduces the length and therefore tension.
