Hello all, great forum, I'm new to vaping and just purchased a smokelessimage volt pro. Quick question about the battery(or e-cig batteries in general). Is it best to let them completely die or at least get low and THEN charge. Or can we put and leave it on the charger whenever we want to? For instance, I have a fully charged e-cig, I vape for 10-20 min, does it do harm to put it right back on the charger? I guess it may have to do with battery life, as it says my battery is good for 300 charges.