To
determine how long your
battery will last,
calculate the
battery's total capacity and divide it by your circuit's power. Multiply the
battery's reserve capacity by 60. With a reserve capacity, for instance, of 120: 120 x 60 = 7,200.
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The battery in your iPhone is capable of around 300 to 400 complete battery cycles, or full charges before reaching 80% of its original capacity. This usually takes about two full years of iPhone use, which is why we tend to think of smartphones as having a two-year lifespan.Jul 31, 2020
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Typically, a modern phone battery's (lithium-ion) lifespan is 2 \u2013 3 years, which is about 300 \u2013 500 charge cycles as rated by manufacturers. After that, the battery capacity will drop by roughly 20%.
