200-250ish lumens. I work in IT i… I have seen .. a run time around 30 mins.
you may want to reconsider if your initial assumptions and expectations are practical and realistic
1. 200 lumens is too bright to use indoors for close work
2. running a light on HIGH for more than 5 minutes tends to get pretty hot.
3. runtime on small lights is limited by the size of the battery
I agree with the suggestion to consider the TIP, and I particularly encourage you to include HIGH CRI as a feature in whatever light you choose. fwiw the TIP claims to use NoPWM, while the sidekick and MecArmy offerings use PWM. PWM is a type of strobe, I avoid lights that use it.
If runtime is an issue, I also agree that carrying a spare battery and an AAA light could be effective. For example, the AAA Lumintop Tool can be had with a Nichia LED. The light has a reversible pocket clip which makes it useful clipped to a hat as an improvised headlamp to free your hands.
Personally, every time I put a light on my keychain, I end up taking it off because it is easier to hold, both in my hand or mouth, without the extra weight of keys, and I dont want the added weight on my ignition.
I find the Medium mode sufficient for most things I do with a flashlight indoors. Medium mode has MUCH longer runtime than High, and does not overheat. I am a big fan of rechargeable Eneloop batteries.
here is a Titanium Lumintop Tool, when I had it on my keys, note I created a quick release option, I find that important
The TiTool has a reversible pocket clip, which allows it to be worn as a headlamp, on a baseball cap. I dont have a pic of that, but here is a copper tool in that application
I also like the pocket clip because it stops the light from rolling off a table when I set it down. The Ti version will also tailstand, for ceiling bounce light distribution.
The TIP has no pocket clip for use on a hat, but it is brighter for short bursts on High, and is considerably less heavy than a Lumintop Tool. I think the TIP has great potential, it has just been announced, nobody has received one yet. I like the USB charging feature and if you dont expect to run it for long periods on High it is very bright, plus on Medium it has much longer runtime.
good luck with your decision, I hope you share impressions of whatever you end up with.