I wouldn't use my laptop or any other device other than a standalone USB charger for my ecig applications. A standalone USB charger is safer and more convenient.
If the worst happens while you are charging from a laptop or desktop it's probably going to involve replacing the motherboard or a dedicated USB port card. Use an external USB charger.
If the worst happens while you are charging from a laptop or desktop it's probably going to involve replacing the motherboard or a dedicated USB port card. Use an external USB charger.