If using alcohol, make sure to wait for the battery and cartridge to dry completely before screwing them back together and turning it back on. This is by far the most common cause of a battery malfunction. Frequent cleaning of your battery can eliminate this problem altogether.
How to fix ooze pen wont charge?
A loose battery can disrupt the flow of electricity, preventing your vape from fully charging. Thankfully, the fix is usually as simple as unscrewing your battery and reconnecting it. You want to be careful to not overtighten or under-tighten your cartridge to your vape pen.