I have multiple Samsung 30ts. Bought a charger off 18650battery.com. I can use the Samsung 30t all day. Literally 24 hours of vaping a decent amount on a .18ohm build and when i go to charge it, the charger says it's still at 70% or more. Is this right? Seems like it should definitely be lower and, being i use mechs, it feels like they are lower. Is my charger messed up?