I am using those batteries in mine, only one didn’t fit the other 6 did, try rotating the battery and see if it fits, it is a snug fit indeed
Ed: The Hi-Max has two layers, white under, clear over. You can remove the outer clear layer but be warned that the under layer is somewhat brittle. Just treat the batteries carefully and inspect them for nicks in the future.
I am kind of new about this, how is it that the batteries can short itself when the wrapper is removed?
The metal casing on the cell is negative so it can touch the spring in the front shorting it.
you’d better not for the short reason.
As mentioned before, the HiMax cells are double wrapped. The white layer is pretty much like the one from the old white-blue Solarforce cells. Its OK but, as said, brittle.
Thanks for the comments
I will cut the clear plastic off one and see how it looks/works/holds up.
You can remove both and wrap it with thin scotch tape
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=320944707574&ssPageName=ADME:B:BOC:US:1348
I think its a good price.
But I dont understant, someone said that Samsungs charge to 4,35V??
Can someone more knowledgable explain?
I can’t explain it, but it is written in the Samsung homepage, that the Samsung 3000mAh 30A needs 4,35V to be full.
The Samsung 2800mAh needs 4,3V.
http://samsungsdi.com/battery/cylindrical-rechargeable-battery.jsp
Can this be dangerous for lights that are specified for 4,2V? Or it snot a problem, just 0,1-0,15V difference?
Not a problem for the most part. However, unless you get a special charge for them (or have a hobby charger) then they are not going to reach that voltage.
This are only 4% more and I don’t think, that this will harmful (in a single 18650 flashlight). But I would not try to use 2-3 of them in a flashlight in serial.
This depends on the actual cell/battery, in my battery review I do test cells/batteries that need higher voltage, both at the high voltage and at 4.2 volt. You are not required to use the higher voltage, but will get less capacity when using the 4.2 volt on a 4.3 or 4.35 volt cell. To see how much you loose, check my reviews.
Thanx
Cottonpickers sells a VERY nice charger that can do the 4.35v batteries to full capacity! They work REALLY well 
-Jamie M.
My Hi-Max 18650 needs to be rotated until the ‘sweet spot’ is found to fit in the UF T50 and then it slides right in, albeit quite snugly. It’s a slight nuisance but manageable. However, if there is going to be trouble with them fitting at all in some lights then it’s a pretty big issue, imo.
Try rotating it as you let gravity (and maybe just a little bit pressure) force it down. It’s the positive end (PCB) that hangs up so once you get past that there shouldn’t be any more issue. That’s the case with mine anyway.
I had to cut the outer clear layer off mine to fit into my UltraFire 2100 and do not see any problem with doing that
I dont know why tere’s not group buy for these here on the forum.
I bought 12pcs (2600mAh) from ebay (from that pingyi seller, something like that) for 59$ with shipment. Thats 5,25$ per cell, great price, and these cells are way better than 2400 TF flames.
Are these the way to go as a step up from Trustfire Flames?
There seems to be so many brands and deals around that I can’t keep up; I realise there are better batteries out there but these seem to be well thought of for the price. Would they be a better buy than the Tank007s from here?