battery efficiency

Searching for large vaping cloud, humanist handle design, gorgeous out-looking device? That’s what our products can bring to your life. Welcome consulting. Dear, thank u for reading. This is Doris from Yostatech, we are the Professional vape device supplier,making newest and hottest mods, kits...

Hi everyone I'm a bit new to vaping and I love it but I have an evic vtc mini with a cubis tank running an ni200 coil at 0.24ohms 26watts in variable temp mode and the standard battery is pooh I've seen a LGMJ1 3500MAH 10amp/20amp 18650 but I need to know if this will be safe enough for my evic...

I was told on a Facebook group that running 316L coils on mechs is hard on the cells in some way, is there any merit to this or is buddy blowing hot air?

I apologize if this has been beaten to death, but I am looking for some answers on what dual battery configuration is supposed to be more efficient. I'm looking specifically at regulated mods... I have both a Vapor Flask DNA40, and Sigelei 150TC. The VF is parallel, and the Sig is Series...