Since we are on the topic of chargers just want to throw some caution into the wind.
It is possible for the negative plate on these chargers to retract very quickly catching you off guard and perhaps tearing your battery wrap. It has happened to me and I am sure it has happened to many others as well. If your battery wrap is torn even the slightest, DO NOT USE IT! I cannot stress that enough. You will become familiar with your charger and know the tenssion of it springs, but accidents do happen so thought I'd warn about the battery wrap.
Batteries can be rewrapped, it is not difficult but does require a hair dryer or heat gun. Battery wraps are extremely inexpensive and come in all kinds of colours and graphics. If you do not have a hair dryer, you can have a local vape shop rewrap them for you. Just do not ever use a battery with a torn or worn wrap.
Also – at some point of time you will probably want to purchase spare batteries. They do not have to the same make and model you are currently using, but given you are familiar with them it doesn’t hurt either. As you already know just make sure they are authentic. Batteries pairs should be married meaning they are used together and charged together for the entire life of the battery. Do not mix married pairs (one always gets jealous…LOL!!), and always marry the same brand/model battery. If you ever get a single battery mod, you can split (divorce) a married pair but they can not ever be married again. So in other words you would have 2 bachelors. Hope this makes sense.