iPhone X Battery Capacity, Backup, and Charging Speed
iPhone X has a big battery capacity which is 50% larger than the previous iPhone 8. Apple claimed that the iPhone X will get 50% more battery backup than the previous model. Apple has also made big changes to the charging speed of this device.

iPhone X Battery Capacity and Backup
iPhone X has a 2716 mAh non-removable lithium-ion battery which is enough for an all-day backup. Apple claimed that the device can provide up to 13 hours of HD video or 60 hours of audio playback time on a full charge. On our heavy uses, we got about 5 hours and 30 minutes of screen on time.
iPhone X Charging Speed
iPhone X supports up to 15W wired charging which will charge this device normally. Apple advertised that Charging the device with an 18-watt charger will take up to 30 minutes to charge around 50% and up to 80 minutes to charge to 100%. Also, this device supports Qi wireless charging system.