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doxavita

macrumors 6502a
Original poster
Today my battery was fully charged (green led). Then the MBP got used for about 20 minutes without power adapter. Now I connected the power adapter again and it's recharging until battery is full again.

Does using battery for only 20 minutes and recharging count as an entire charge cycle?
 
No, a full cycle is discharges and recharges adding up to 100% of the capacity, so that will not be a full cycle.
 
Next time use the Laptop Battery Guide. It is at the top of the forum.

but a charge cycle counts as emptying the entire capacity of the battery, whether you do that in one use or not.

Examples of a full cycle:
- start at 100%, drain it until 0.
- Start at 100, drain til 80. Then charge back to 100 again. Drain it to 20.
a 20% drain plus an 80% drain is one full cycle (100%)
 
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