To charge the original UPRIGHT GO, use the supplied USB-A to Micro-USB charging cable.
For the UPRIGHT GO 2, use the supplied USB-C to USB-C charging cable. Plug it into a standard (i.e., not 'smart') USB port such as a PC USB port or an iPhone charger.
For safety reasons, the UPRIGHT GO 2 is designed to block the current from smart/power chargers such as those used with PCs and Macs.