I leave my original charger at home, plugged in to the wall. When I'm out and about, I carry the Omnicharge 20 USB-C (20,100 mAh, good for ~3 charge cycles vs the 6,500 mAh battery in the One Mix). I pair that with this super cheap Mothca 29W USB-C PD charger, which by itself doesn't charge the One Mix because of the voltage differential, but because the Omnicharge supports passthrough charging it DOES charge the battery pack which then charges the One Mix. So this setup allows you to be completely mobile while out and about and for emergency where you need to be stationary for 8+ hours you can still be plugged in. Added bonus, both items are super portable (the Mothca is smaller than the included charger), and the Omnicharge is the same width as the One Mix so it sits on it in a very stable manner. Since the Omnicharge has TWO USB-C output ports, one on each side, it doesn't matter which way you position the Yoga (tablet, or tent, or display or laptop), there will be a port on the same side. The Omnicharge also has this odd feature where the extra USB-A ports on the charger can also be used as a data hub for the USB-C connection so it expands your USB-A ports from 1 onboard to 3 total. Right now Amazon has them both on sale: Mothca USB Type-C with Power Delivery Wall Charger 29W: $10 minus 20% coupon = $8 Omnicharge 60W USB-C Power Bank: $200 minus 20% coupon = $160 Note that I scrubbed those links, so they aren't referral links. They're just direct links to the items, I get no kickback/benefit from any purchases. Just sharing a good deal.