Greetings! I ordered a starter kit. and have had some strange battery issues. My first battery lasted just about 2 weeks. It started only holding a charge for about an hour. I filed a ticket and it was replaced right away (Vapor4Life customer service is awesome!). Now my second battery is doing the same thing only worse. It lasts anywhere from 15 min to an hour. Strange thing is both batteries still took 4+ hours to charge. I usually use the battery until it starts flashing before charging. Is this recommended operation? Also, could there be an issue with my charger? It seems to work fine so far on my replacement for the first battery although it does take a long time to charge. I do use drip tips as well. Any advice or suggestions for me?