I've been using Samsung 25R's and LG HE2's for way over a year now, and at my low wattage, they last me usually a full 2 days, though sometimes on the evening of the 2nd day, I either have to change the battery, or switch to one of my integrated-battery mods. So tonight, I ordered a couple of Samsung 30Q's. Vaping at <10w, 15A is plenty for me, but I'm curious to see how much longer they'll last, being 3000mAh, than the others, which are 2500mAh. At the very least, they should allow me to always get the full 2 days.
I was doing just fine on batteries, until my son came back home and started vaping, and I told him I could carry him for a while, till he figures out exactly what style of vaping he enjoys and acquires the hardware for it. So 2 more batteries will definitely be helpful!
Andria