What is your favorite 18650 flashlight battery and charger that you use?
At the current time my most used charger is the Xtar VP1, but it will be replaced with VP2 soon. My reason for using these chargers are many:
1) Full CC/CV charging and no pulsing
2) Many currents, i.e. I can charger most of my batteries on it.
3) The slots accepts many battery sizes.
4) The voltmeter, this makes it easy to check if a battery has been mistreated (I do have a pile of DMM's, but it is easier to use the charger).
5) The VP2 adds more voltages and 26xxx battery size to the above.
6) Xtar has shown for some time that they make good chargers, this makes me trust them more than new companies
Usual I uses 3100mAh batteries, mostly batteries I have removed from my charger testing due to age, but my favorite is the 3400mAh batteries, because it allows higher charge current (The capacity difference is not that important for me).