Okay. You can’t believe any length specs anywhere.
I took a chance and went for the NCR18650A 3100 Unprotected Buttontop.
4 X NCR18650 = $28.82 Not bad.
My M170 was shipped today via SingPost. Batteries will come via HongKong Post.
SingPost arrives in Vancouver.
HongKong Post arrives in Toronto
I live in Toronto, so I’ll get the Batts. way ahead of the light.
Keep your fingers crossed, or I’ll be opening my own Battery store.
The flashlight includes adapter for flat-top cells -> the unprotected NCR18650B batteries will work. I just hope the adapter doesn’t build too much, if it does it won’t work either 
Since it’s in parallel and it has low battery warning, using unprotected should be OK 
You really can’t be sure until the flashlight and batteries arrive. You will be my test person, please post updates
I went with the NCR18650A because I had two choices of unprotected. Flattop or Buttontop. I went with the buttontop. I figure if I didn’t have to use the adaptor, it would be better.
I might grab four of those Sanyo 2600 unprotected too, just because the price is so good.
Yeah that might be the best. I only have 2 of those. Might buy 4 new ones from fasttech. But it’s a hard choice, about 1A less in total. Dunno if that will make much of a difference anyway…
finally got yesterday my RM170 too, first impression - awesome flashlight! got the NW version, beamshot more focused comparing SRK, have hidden strobe and SOS modes(for me not necessary), batteries fits any what I have; Panasonic/Trustfire/Senybor/Ultracell, protected & unprotected, buttontop & flattop(with adapter), all fits and works fine. can work just from one battery(not so long time), driver works fine in any way, except then working in the lowest mode(5) - some unpleasant sound coming… but this only when in the 5 lowest mode, overall - very good quality torch, feel good in hand and very bright!
Got a caliper to same the lengths of all your protected batteries?
longest protected battery I have is 69.5mm, and I think 70mm will not make any problems to fit RM170.
To you have those wires in the springs of the tailcap pcb?
Hank from IOS hasn’t shipped mine yet. He told me 2 days ago “it will be shipped today” - nothing 
yep, just like on posted photo. I’ve already ordered Sanyo UR18650ZT 2800mAh from fasttech, according their description they are 70mm long, so will see if they will fit or not to RM170… I suppose they will, Senybor 69.5 fits… but, will see))
on FFL/CHQG is new option for RM170 - 3 mode Hi>Mid>Low [$0.00], nice too!
s. just did the test - protected Trustfire(~68.70mm) with adapter for flat tops(~2.18mm). it works! so… 70mm is not a problem 
Mine is in the system now…electronically.
INFORMATION RECEIVED& (This is not an acknowledgment of the physical receipt of the stated Registered Article)
Order was placed 5 days ago, btw…
I went kinda nuts at FastTech…so I’ll be all set.
4 X Panasonic NCR18650B Protected
4 X Panasonic NCR18650A Ubprotected Buttontop
4 X Sanyo UR18650ZT Protected
4 X Sanyo UR18650FM Unprotected Buttontop
I also have a bunch of Eagletac 3100 mAh protected which are shorter than most Panasonic based protected cells
Now I have to start looking for my next flashlight, so I can utilize all these cells.
best choice I guess at the moment, to order this torch from CHQG/FFL - really in stock. I’ve ordered on 11.12.12, order shipped via Fedex only 27.12.12……
OK, it was shipped yesterday. Late system update, he said… Tracking number is: RF119483444SG
Now I actually hope you get your flashlight + batteries ahead of me, Ouchyfoot, so I know what batteries to buy :bigsmile:
RF119048643SG
Thats great news! Thanks for all the comparisons.
Now available from fasttech, for $84.
well, protected xtars are a + cap shorter than panasonic 18650A protected
If this light is around $100 and you can get a Terminator here in the states currently for just $112, I can't understand why anyone would want this light when it is no brighter than the King. Spend the extra $12 and get a light that will own this one in nearly every aspect. Go with the Terminator. Seriously. Just sayin'...