How long does the battery last on the HP ZBook Firefly 14 G7, and does it support fast charging?

The HP ZBook Firefly 14 G7 supports up to 23 hours of battery life and includes a 3-cell, 53 Wh Li-ion polymer battery that supports HP Fast Charge Technology. Fast charge delivers approximately 50% charge in 30 minutes when the system is in hibernation or off mode. Battery life will vary depending on configuration, loaded applications, features, use, wireless functionality, and power management settings. (Page 11)