[coder543]

The comparison has to be meaningful. This is a term used for grid scale batteries, and the capacity is irrelevant to this number. Lithium ion grid scale batteries are “4 hour batteries”, roughly. Depending on the exact chemistry and configuration, they could be anywhere from 2 hour batteries to 8 hour batteries.

You can compare Form Energy’s 100 hour batteries to traditional lithium ion and see that Form’s batteries are 25x slower. That’s a valuable datapoint, and speaks to a limitation of Form’s batteries.

The time to discharge an iPhone battery at maximum supported output of the battery is entirely irrelevant to iPhones.