Hardware Any advice on wanting to use a 3DS console on 10.5hr flight?

[astrangeone]

I recently took my 10 000 Anker powerbank and 3DS usb cable with me. Lasted a good amount of time and was great when I landed - HK mains power is 220 volts versus 160 volts here, so I basically used my usb cable to keep a charge on my 3DS.