ProVari 2.5's have a relatively low 3.5 amp limit, and in my experience Efest red and purple button top varieties have worked fine. They may not perform quite as well as my AW batteries in vape time and overall life but I haven't read of anybody having a problem in these lower amperage applications.
Would I use them in a subohm application at high wattage? No - that's where you need the LG, Sony, Panasonic and Samsung high drain high amp batteries.
Would I use them in a subohm application at high wattage? No - that's where you need the LG, Sony, Panasonic and Samsung high drain high amp batteries.