While I do agree that using a dedicated battery charger is the best, I will also state that there is nothing wrong with using a good devices internal charging system. As long as you have a dedicated setup for that charging.
I am one of those that uses the magnetic charging systems. I also use quality USB charging ports like the POTEK chargers instead of wall warts. Wife does not use the magnetic system, but she does use the same USB charger I do. Neither of us would use a computer or a simple wall wart for charging.
Know your vaping device, know your charging system, don't just plug and forget and check your vape while charging.
I am one of those that uses the magnetic charging systems. I also use quality USB charging ports like the POTEK chargers instead of wall warts. Wife does not use the magnetic system, but she does use the same USB charger I do. Neither of us would use a computer or a simple wall wart for charging.
Know your vaping device, know your charging system, don't just plug and forget and check your vape while charging.