I bought myself some 4000 mAh, but bought flat top 65mm instead of a normal button top that's 69mm. It has real bad connection with my TK35 and no connection with my Ultrafire 501. Where can I get a button top or magnetic battery spacer? The only mention of such a contraption is that the TK30 came with one as an accessory. I cannot find this anywhere else.
Like this?
A tiny few mm wide circular neodimium magnet could probably do. Would however rather get proper cells for that one light.
You can use this 8mm or 9mm magnets:
9mm, 10pack, $3,00
8mm, 20pack, $3,40
http://www.dealextreme.com/p/super-strong-rare-earth-re-magnets-8mm-20-pack-4248?r=28318244
They seem to be necessary. These flat top batteries are the same as the ones with a button top. I compared them with my 3000 mAh and they are exactly the same size. There's an indent where they placed the button and of course, the outer jacket is longer.