I will appreciate any help I can get regarding this problem. I got a brand new VV mini splash from vapecore.com shan's mods, and a new set of 14400 900 mAh batteries and charger from amazon. I am using a map tank with a 3.2 ohm ce2 version 5. I am running the mod at 3.7 and 4.5 volts. Now, here is the problem, I fully charge the batteries they will read 4.18 volts when fully charge; pop them in the mod and vape for about 3 hours then is dead. I check the batteries and one reads 3.85 volts but the other one reads 2.4 volts or so, then no more vapor or very little. Why is only one battery being drained but the other one isn't? Do you think is the battery or is it the mod? Is this normal? I am heavy vaper (4 - 5 ml a day) how long should I expect the batteries to last vaping like I do? Thank you very much for any help you can provide!