Just like mobiles and computers, fully draining will cause damage to the vape battery. Some people don't even notice this and never stop vaping until the battery dead. So you are always recommended to charge your e-cigarette while there's still battery power left.
Full Answer
What happens if you break your vape battery?
Breaks and leaks. Most vaping battery chargers and batteries themselves have mechanisms to stop the flow of charge. But every now and then, a bit of charge will “leak” of higher voltage charging filling it just a tiny bit more. This stretches out the battery and will slowly deteriorate the battery's charge capacity.
Why does my vape battery overheat so fast?
The stress of charging more than necessary can cause the battery to overheat more frequently. Since there is excess charge in the battery, each pull on the vape will try discharge that extra energy straining the battery significantly. Furthermore, the stress manifests in various ways, such as battery cracks.
Can vape pen batteries be left on the Charger?
Similar to cellphone batteries in Samsung or Sony mobile devices, vape pen batteries should not be kept on their charger for excessive amounts of time. Any electronic device that uses at least a single battery needs to be carefully monitored to ensure safety standards and so the battery life does not deplete.
Is it safe to leave my vape plugged in and charging?
Don’t leave battery charging unattended - not keeping an eye on your vape while it’s charging is a safety risk. Most well-made mods have a cut-off point where they stop charging when they are full but unfortunately this function fails sometimes.