My GaN charger stopped working but my 100wh battery ive used since launch. Rattles a bit so something is loose inside but works completely fine. I just ordered one of the competitors tho as it also has magsafe and a Apple Watch charger built in. Otherwise id recommend their batteriesExcept for their 100 GaN charger, other Hyper products (mainly their hubs) were faulty and the company unresponsive. I stay away from Hyper products though the "specs" on paper look nice. These are bulky items. I do not see them being useful for travel. But the specs for the AC adapter would work for a remote office I travel to, are interesting. I will wait and see what Anker comes up with for the new MBPs.