Great review selfbuilt. :twothumbs The photos of the SR90 in your hand are almost comical...that thing is HUGE!!!
Yeah, this is where hand shots are a necessity - from the overall shape, you would never know how large it was!
Incidentally, while I have tried to emphasize the weight here, it may not be as bad as some expect. My daughter picked it up last night, and her first comments were that it wasn't as heavy as she thought it would be.
It's big, but then so are HIDs. The SST-90 is a hungry beast, and needs a lot of power. It's also a big LED, so it needs a large reflector.
Good points - although I suspect they went with such a large reflector because they needed a large thermal mass in the head to act as a heatsink, given the current flow. Probably a bit of a chicken-vs-the-egg issue, I suppose - I'm just glad they went with both in the end (i.e. big heatsink and big reflector).
Oh, and I just double-checked my light - the tailcap does indeed unscrew, leaving you with just the handle portion with the battery inside. Also note the retaining ring holding the battery inside the handle (a similar ring was present at the other end of the battery pile). It is thus possible that you can get it out from the handle (but I don't plan to try this unless Olight give me the go-ahead). It would be great if Olight made "spares" available for purchase, one way or the other.
i, too, was surprised by the near-perfect flat regulation. olight did a damn great job on this light
I agree - great job on both regulation and runtime, at both output levels.
I also like the Lo mode output level, given how comparable it is to the previous generation lights. And I'm particularly impressed that they could get more than 6 times the runtime on low, with only 3 times the battery capacity.
Now I'm just waiting for someone to complain about the lack of a moonlight mode ... :laughing:
Can you use the SR90 while charging?
I don't know if you are
supposed to, but you certainly can. I accidentally left it plugged in for half an hour during a Hi mode runtime

, and it added about 14 mins to the total length of the run. A bit surprising that it added so much, given that it takes ~4.5 hours to fully charge the light.
In any case, I don't recommend you do this without confirmation and more info from the manufacturer - I will check with Matt to see what Olight thinks.