I do not know how these batteries have a 5.0 ⭐️⭐️⭐️⭐️⭐️ rating. I put new p312 hearing aid batteries in at 7:40am by 9:30am they where already at 80% and dropping. How is this when I let the air charge overnight brand new batteries. Other 312 brand hearing aid batteries like Rayovac/Energizer/Duracell/Walmart brand/Walgreens brand 312 hearing aid batteries last about 3-4 days and that's being connected to Bluetooth and streaming music for almost 10hrs a day. These garbage worthless batteries are a joke I don't even get a full days use b4 the batteries loose power and I'm only using my Oticon Bluetooth hearing app with no streaming. Powerone hearing aid battery manufacturer should be investigated for false advertising and fined for lying to the public. I will never ever use this companies product again. As I sit in silence typing this I'm watching my battery level in both hearing aids slowly die. Do you know and understand how scary it is when the battery dies that fast with no warning. You start to panic thinking the hearing aids just have malfunctioned and need too be fixed or the new batteries you just put in this morning only a few hrs earlier are now dead. We can't hear without the hearing aids and that is a safety issue. Someone or something could sneak up on you and hurt you or you might miss an emergency signal in a building or outside. With these batteries dying so quick you would not be able to hear car or emergency vehicle approaching anf honking there horn at you and you might get hit. DON'T GET THESE BATTERIES FROM HERE. GET NAME BRAND OR STORE BRAND 312 HEARING AID BATTERIES.