I love my Lezyne lights from a few years ago, back when they had "Infinite light" (replaceable batteries). The 1200 lumens Mega Drive came with two battery packs (which were two 18650 packed together) and the SuperDrives were 600/800 lumens with one 18650 battery. I've got many batteries but now they're not holding much anymore.
It's so convenient to just bring along a few replacement batteries in my backpack. I'll look into finding good reliable rechargeables 18650 for the SuperDrives. The lights are still as new!