All we know based on what is written on the back of the accessory is that the total battery capacity is 1,460mAh or 11.2 watt hours.
However, there was some speculation about the MagSafe Battery Pack having two cells instead of one, and today’s teardown proved the theories right.
The new MagSafe Battery Pack is available at Apple for $99 and works with the entire iPhone 12 lineup.If you’re looking for cheaper alternatives, there are some Qi battery packs available at Amazon that are compatible with MagSafe