Originally posted by Apet-Sure The sticker on the bottom plate shows '5/9/12V'. Multiple battery options coming? Or just multiple charger options?
USB charging offers multiple options. I assume that you could use a regular USB charger, they use a USB Type A outlet and provide 5V (max 2A). Proprietary systems have chargers with the same outlet, but they are specified for an output of either 5/9/12 V, depending on the abilities of the device to be charged ( Quickcharge etc.). A new Standard is implemented for chargers in the newest generation of USB, they would normally have an USB-outlet of Type C and have a system called Power Delivery, that can provide 5-20 Volt with 5 A, thus a Notebook can be charged with that. If the K-3III can accept 15V this will probably be used for faster charging (with the provided charger). Chances are high this might work with other chargers too, that support Power Delivery. And, I would assume, if you use any other (regular) charger or attach a normal powerpack you will charge it with 5V.
Edit: unfortunately all this things also require a cable capable for higher voltage, in worst case an old cable will just limit charging to 5V. Still, if I forget the dedicated charger or cable I can't do anything now with my KP, here I can still charge the battery over night...