The last time I ordered new batteries I was using a provari/ 3ohm carto setup. Now I am using a DNA20 setup with RBAs usually around 1ohm coils. I am currently still using my 18650 AW IMR but they are getting old and I am noticing the time between charges is quickly decreasing. So, which batteries should I be shopping for? I have never fully utilized the 20 watt capacity. On avg I vape around 14v but it would be great if my batteries could handle the 20watt if I do so in the future. Please point me in the right direction