Only 2 modes with NiMh!
It has three modes, mlh. Med and high differ little but they are separate modes.
Not on mine. Press once - HI, another press - LO, another press - HI, another press - LO.
But it has 3 modes with 14500, so, as I said before, I like it has only 2 modes with NiMh.
BTW, serial number is 0311 2218 (first 4 digits: MMYY, month-yeah I think. The other 4 digits - could be a total number of lights they've made)
Mine is 0311 0303. That is an interesting new design. Right, I can see how having only two modes is more convenient.
The medium is useful for me because on high it gets really hot after a while. On medium it doesn't. I think the way they did it is to ramp it up as high as they can get without overheating and make that medium. I like it that way.
Yup, agreed :) Gets slightly warm after 1 min on MED. But it gets too hot after 10-15 sec on HI. It's strange, because HI is about 20% brighter than MED :| With 14500 it's: HI-MED-Turbo :bigsmile:
BTW, I like it more now, after "playing" with it for a while :D I think it will replace my zoomed-out LedLenser for close-up jobs. Quite useful that floody beam.
Ah, other things about serial number: as I said before, first 4 digits could be the date, but no of the current batch, it should be the date when they started to fabricate that model/version. 1110 (nov. 2010) - XPG version, 0311 (march 2011) - XML version. And the other day I saw V3 model, SN started with 0711. Apparently that model has bigger rubber tail cap (and black instead of GIND). Check this site for pics and more info (if you understand Japanise :bigsmile: )
SashiX, those are Japanese.
If your only has 2 modes on nihm, then unfortunately it's defective.
It should be more like the 14500's have two modes, because hi and med only differ by 30-40%.
OK, now it has 3 modes :~ I've changed the batt. Strange. Don't know if it's an issue, but my unit has a very short delay when turned ON with NiMh (about 0.2 sec). No such delay with 14500. Now HI works. Before it was only MED-LO.
UPDATE: ok, I have to change between modes faster :bigsmile: Looks like I was doing it too slow. Could be the switch also, it feels somewhat cheapy. Anyway, excellent light. Thumbs up.
D'oh! :bigsmile: Thanks for telling me that, will update my previous post as well. ;)
My friends 2 year old grabbed hold of mine and ran off with it.(he loves playing with my lights). His 4 year old sister tried to take it off him and after a struggle my Xeno went flying through the air and hit a hard tiled floor. 
Still working perfectly. 
My friends were laughing at me because I was edc-ing 5 lights. They also found it amusing that look at flashlight forums. Soon after we had a blackout. They stopped laughing and I started laughing.
Sure it was like "Muahahaha" J)
edc, you bid me. I only carry 4 lights on me.
Just received my 2nd xeno E03 today... dated 07-11 on the serial , my original was 03-11
Looks like they have made a few changes. It no longer has the smaller GITD tailcap button, instead it has a regular 14mm black button.
The inside dimensions of the tail cap have also changed to accommodate the larger tail cap button.
It also has a less knurling (finer) and the finger grooves seem to not be as deep as the original.
My views:
LIKES : I like the larger tail cap button, since I have spare 14mm's I could replace them with any color I want, or change a damaged one. I wish it would have came with a GITD as stated by the seller. (that's me just be picky)
Dislikes: I miss the more rugged knurling on the body and the deeper finger grooves.
Sorry for the crappy cell phone pics.
Seems to me the v3 is a little brighter than v2... my v2 has a yellowish tint, while the v3 has more cool white tent. Both are "Cool White" models.
Here they are.
I think the black tailcap change is fine. However, it really is too bad that they made the knurling less agressive. The old knurling felt very grippy and nice in the hand.
I'm glad they changed the tailcap to a regular sized one. That way I can have spares. The lack of knurling makes the light feel less "expensive" to me... I don't know why...
I Just bought the Red Cool white version, Will be my high output light on a mt hiking trip as I'm going lightweight now. will be leaving my Solarforce L2 with kadoiman XML drop in
I don't usually edc 5. My friend has a penthouse so I took the skyray 3 xml, L2T,KD C8 to try out (along with my dqg2 and Xeno). I saw a car speeding up a 40km hr street. I was just about to give them a blast with the skyray when I realized it was the police. lol
OK, 3 changes so far (comparing to V2):
- knurling less aggressive (was veeery aggressive before, IMO, you can actually use it as sand paper :bigsmile: )
- Bigger rubber tailcap (black instead of GITD)
- Less deeper finger grooves (after playing with mine for awhile, I can say that those finger grooves are amazing, light feels very comfortable in hand)
I just got the XP-G R5 CW model it was advertised as a V2, but I got the V3 delivered. Medium and high also seem to be very close together depending on battery (NiMH) status. Serial number is 0711 1395. I paid $26 with "make an offer" . Have to charge up some batts to see what's up with that medium-high problem.