[MichaelZuo]

You can’t buy a replacement battery through their official channels? Which country are you in?

[ClumsyPilot]

You can pay for battery replacement, but you cannot buy a battery and replace it yourself. They literally refuse to sell you any parts

[mrunkel]

He wants to buy the battery from Apple’s suppliers. Not from Apple or an authorized reseller.

[sudosysgen]

You cannot buy the battery from Apple or an authorized reseller. You can pay for them to replace it themselves, but they won't sell you the part.