I have 4 Xtar XP-1 Hummingbird single bay, multi-chem USB chargers. They’re good for 14500/AA sizes and below and have 250mA and 500mA rates, so good for 10440s/16340s.

I also have the Xtar MC-1+ USB charger, which does most cells, is li-ion only and has 500mA and 1A charging rates, which is a little high for the smaller cells listed above. Still for 18650 type cells, it’s faster.

I also have the Liitokala 100 and 202 USB chargers (2 each) and these are neat, multi-chem, multi-voltage USB chargers, both 1 bay and 2 bays respectively.

All of the above can be had for under $10.

I have a VC-4 and while nice, it’s a little finicky regarding the power supply.

I would consider the VC-2 Plus Master, but some of the other ones do a bit more, or are lighter, easily carried.

Chris