Apple iPhone 8
Battery Service Life, Usage Duration, Gentle Battery Treatment, Charging Time
Battery Service Life (time after charging until next charging)
Very individual, hard to compare. "Little users" and "Heavy users" define everyone else, not to mention the term "normal user".
Personal definition: private, not allowed in the workplace, professional 5-day-week, heavy use only at weekends and holidays.
Little use: 2-3 days (Assistant Siri, some e-mails, possibly some iMessages, little calendar use, possibly notes, 3h listening to music, minimal web use).
Much use: 1 day (assistant Siri, many e-mails, some iMessages, calendar frequent use, some notes, phone calls, 5 hours listening to music, 3 h web).
Gentle Battery Treatment
In order to save themselves not replaceable battery, I let it never go to the limits, because that will wear it unnecessarily quickly.
At the latest at 30% residual charge I charge the battery again, but only up to max. 80% (I try to keep it in a range of 30 to 70 percent).
When the battery is nearly empty and then charged to 100% (eg. overnight) it stresses the battery and uses a full charge cycle.
Modern Lithium Ion batteries provide about 300-500 charge cycles. In practice, these are about 5 years depending on the treatment.
Fast charging is bad for the life of a battery, so I miss no corresponding power supply.
Therefore, the relatively slow charging the notebook does not disturb me, on the contrary. So the battery is also not hot during charging.
Expectable Charging Time
This list is intended to give you an impression of expected loading times.
Charging time on USB jack: 2:08 h (at 30% residual charge to 80%)(Notebook Sony VAIO Z12X9E/X)
Charging time with 5W power supply: 0:54 h (at 33% residual charge to 80%)(Apple 5W USB Charger)
Charging time with 36W power supply: 0:49 h (at 33% residual charge to 78%)(Anker 36W 5V/7,2A 4-Port USB Charger)
Charging time with battery pack: 0:43 h (at 31% residual charge to 80%)(Anker PowerCore Edge 20.000 mAh)
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