Teardowns I've Worked On
It seems the battery has a higher capacity in English than it does in Chinese: 4440 mAh in English and 4400 mAh in Chinese!
I'm not sure if my edit worked or not, but Step 4 has some incorrect information:
"To make the new EarPods more resistant to water and sweat damage, Apple's designers removed the external microphone grate."
The old microphone grate was actually just for show. There was no hole, just a recessed area and a piece of metal glued to it to indicate that it was a microphone :P