tandem mobi anker 622 battery case

while I love the new  tandem mobi insulin pump  the one flaw I  found is  its  really sensitive  about where you  sit it on the  wireless charger  and  if  the pump  vibes while its charging  it  will knock it self off  the  charger.  This is a  simple  case to  slide a  anker 622 wireless battery pack in  and  slide the  mobi on top and  it  keeps it centered on the charger even if your on the  go