I apologize. I didn’t realize this was for your elderly father. I have a light over here that works on 2 CR123A batteries. It’s about 350 lumens on high, maybe 75 on low. It has a strobe as well. It’s nothing fancy but it’s built like a tank and is about the same size as the VG15. You are more than welcome to it. It sits on the shelf collecting dust. No stings attached or payment necessary. The elderly hold a special place in my heart and it would be my pleasure if you think this would work for him.

Just shoot me an address and I will get it in the mail.

As far as the 18650’s go. Stick with the name brand cells recommended already from the sellers already recommended and a decent charger and you won’t have any problems at all. These things aren’t miniature bombs or anything but do deserve a little respect. Protected cells will make it easier to keep you out of trouble but I haven’t used them since day one and I have never had a problem. Being new to Li-Ion I wouldn’t, as some might suggest, start pulling cells out of battery packs and throwing them on a charger and walking away. Not knowing the condition of the cell and if it’s even safe to charge could get messy and quite expensive.

Anyway, don’t let all the new information scare you away from Li-Ion or flashlights that use them.

PM me if you think your father could use that light.