What does the instruction manual say, if anything?
Personally, I wouldn't. In fact, I would charge the external
batteries in a separate box charger; and
not use an onboard usb charger. My
I know you would like the personal convenience of faster charging. However, realistically slower charging of
batteries is healthier and safer for
batteries than faster charging. Anectdotally, box chargers are safer than onboard usb chargers. You never know the quality of an inexpensive Chinese mod's onboard charger. Buy a reputable brand box charger (Xtar, Nitecore) and have more peace of mind. Again, my
