I always heard it was better to avoid charging batteries with built-in USB ports available on mods; even a cheapo nitecore does a better job and will make you batteries last longer.
Then again, I guess a rDNA has probably a better charging circuit than any Istick or Kanger Mod...
On an other topic, I just bought my first DNA chip Mod, and it's lovely:
I always heard it was better to avoid charging batteries with built-in USB ports available on mods; even a cheapo nitecore does a better job and will make you batteries last longer.
Then again, I guess a rDNA has probably a better charging circuit than any Istick or Kanger Mod...
On an other topic, I just bought my first DNA chip Mod, and it's lovely: