Update. A couple three months ago my SuperTank battery died. I contacted Zendure about it for a warranty replacement. After much back an forth I was sent not only a new SuperTank, but also apparently a complimentary 100 watt 4 port charger and a spare cable.
I admit that I’d been getting concerned, and perhaps a bit cranky, but I’m very pleased that this company came through.
My kickstarter link to Zendure is below. I get Zendure brownie points if you use it and buy one of their nice batteries. And it’s STILL the only solution I found to the hum with iPad/iPhone charging while listening to my Audeze LCDi3. Although I have not tried the magnetic charger with my iPhone 12.
https://zendure-supertank-2020.kckb.st/c27c9bd9