As far as the Anker products go with regard to powering the MixPre 3 or 6, there are several options available. I've read through all 12 pages of this thread, but I was hoping someone could clarify which ones work best with the MixPre series.
First you've got the two non-plus models, the regular 20100, $45.99, here:
https://www.amazon.com/Portable-Charger-Anker-PowerCore-20100mAh/dp/B00X5RV14Y/and the regular 26800, $61.99, here:
https://www.amazon.com/Anker-PowerCore-Portable-Double-Speed-Recharging/dp/B01JIWQPMW/My understanding is to stay away from these because they do not use USB-C to USB-C, correct?
Then you've got the plus models, starting with the 20100+, $65.99, here:
https://www.amazon.com/Anker-PowerCore-Ultra-High-Capacity-Portable/dp/B014ZO46LK/I believe this link above (the $65.99 one) is the only one officially endorsed by Sound Devices?
Then you've got, confusingly, 3 variants of the 26800+, starting with this one, $69.99, here:
https://www.amazon.com/Anker-PowerCore-Portable-Ultra-High-Capacity-Recharges/dp/B01N3TVRP2/and this one, $86.99, here:
https://www.amazon.com/Anker-PowerCore-Portable-Capacity-PowerPort/dp/B01K6TA748/and finally a "Power Delivery" or PD version, $119.99, here:
https://www.amazon.com/Anker-PowerCore-Delivery-Charger-Portable/dp/B01MZ61PRW/I gather from this thread that the two models people are using with their MixPres are the 20100+ ($65.99) and the 26800+ PD ($119.99)? I was mainly wondering if the other two (cheaper) variants of the 26800+ should be avoided for some reason? Those variants refer to some unspecified "included cable" but they don't specify that it's a USB-C to USB-C cable the way the $119.99 variant does.
Also, I was wondering, between the 20100+ and the 26800+ PD, if there's any way to tell about how much more runtime one might get by spending the extra $54 on the 26800+ (mainly to determine if that extra runtime is going be way beyond my needs and thus, a waste of $). Sound Devices has a handy chart comparing runtimes with various types of AAs, but they don't say anything about USB batteries (and in fact no variants of the 26800+ are even endorsed by them anyway). Any guidance would be appreciated!