Hello, I am interested in GPD Pocket 2 for its ease to recharge with Power Banks and mobile chargers, against 2s yoga laptop which only accepts 12V / 2.5A chargers. According to GPD website, Pocket 2 will recharge with any smartphone charger or power bank with 5V/2A output: https://www.gpd.hk/gpdpocket2 ,Is it true? One standard power bank for smartphones with only 5V-2A(or 1.5A) will recharge Pocket 2 for sure? If not so, what is the minimum Voltage/Amperage necessary to recharge it fine? Thank you very much, Regards.