Alright long story short my arizer air charger broke so I needed a new charger asap. I went to a local Vape shop and picked up an efest luc v2. Basically I have no idea how to work these things and don't want to ruin my battery. What is 1a vs .5a charging? It says 1a charges faster but is this bad for my arizer air battery? It's a stock 18650.