So I just got my vapor no2 and I love it. I've only used it plugged in as it says I need to charge it for 12 hours for the first charge. However I am worried because what I didn't notice is that it only charges when the switch is turned on. However I had my switch off for several hours. So what I am wondering is will it be fine if I let it charge for 8-12 hours now, or have I messed up my battery life because it didn't get to charge for 8-12 hours?