I've read over a lot of the info here and on candlepowerforums but much of it is presented in battery lingo that I don't understand. I just bought a second ZebraLight and need to buy more 18650 batteries. I bought the ones I could get the fastest last time and have been using Tenergy 3.7v 2600mAh with no problems yet. I'm looking at Panasonic 3.6v 3100mAh right now after some attempts at research.
Could someone explain what the difference in v and mAh rating means in practical terms (and small words), and let me know if there are any batteries that should be absolutely avoided?
Also, are 18650 chargers as vital to the long term success of the battery as AA chargers seem to be for AAs? If so, what chargers can you recommend.