yesterday I made dual parallel coil, 28g 7 wraps for each coil it gives 0.19 ohm. I tried it out using my efest purple 2100Mah battery with battery voltage was about 3.8. I really liked the result, great flavor and vapor. but, I'm concerned about the safety of the battery. with fresh battery it will giving about 22A which is still under battery discharge current 30A. is it safe to use this setup? does this affect the life of my battery? and if it is safe how long should I wait between each hit?