today I bought a 510 atty usb pass-threw and a ego battery I was using the Ego battery and the thing is unreal! I was so use to the ejoy 510 battery's the ego is a monster! 8 hours later vaping like a lunatic and still the thing is not dead! Love it and at the computer right know vaping on a usb pass threw so no worries on running out of battery power.I have a question when the light turns green on the usb charger on the ego battery that means it is charged right?