LED Flashlights with plug-in charging



Hi. I want to get an LED flashlight for daily cycling and have seen some (on ebay - sorry) which have a charger which plugs directly into the flashlight while the 18650 battery is inside. I like this idea because I wouldn't have to remove it from the bike and take the battery out. Eg : here

I can't see these anywhere else, are they commonly available? Perhaps I'm Googling the wrong things but I have only ever seen them on ebay.

P.S. First Post, please, please be gentle.