4 ms·

> Similar to a mechanical device that wears out faster with heavy use, the depth of discharge (DoD) determines the cycle count of the battery. The smaller the d

> Similar to a mechanical device that wears out faster with heavy use, the depth of discharge (DoD) determines the cycle count of the battery. The smaller the discharge (low DoD), the longer the battery will last. If at all possible, avoid full discharges and charge the battery more often between uses. Partial discharge on Li-ion is fine. There is no memory and the battery does not need periodic full discharge cycles to prolong life. The exception may be a periodic calibration of the fuel gauge on a smart battery or intelligent device.[1] Why should we trust your statements over ones like these which seemingly are backed by more data and and explanations of the underlying physics? [1] https://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries https://batteryuniversity.com/learn/article/how_to_prolong_l...

Accacin 7y ago
When Apple displays the battery stats to the user it's not actually even close to 0%. That would mean you are avoiding full discharges so you're both right.
- coldtea 7y ago
  Yeah, I mention that. It works on the other side too: iPhones also won't keep batteries charging when they're at 100% so they're protected from such "trickle charging" as well.
coldtea 7y ago
I already covered this - that li-ion takes a hit if totally drained. The point was the degree to which this happens, that modern devices don't let it happen (the shut down much earlier, around 10% or so, so it's a moot point), and that your battery will lose capacity, anyway, due to natural cycle degradation over the course of 2-3 years. More importantly, that such tracking is marginally useful micromanagement (and, Apple's artificial throttling for degraded batteries aside, has nothing to do with affecting a device's speed. A 90% charged device is not magically faster than a 20% charged one). Apple itself, in their document about battery technology and care ignores the "fully drain" issue completely.

Accacin 7y ago

When Apple displays the battery stats to the user it's not actually even close to 0%. That would mean you are avoiding full discharges so you're both right.

coldtea 7y ago
Yeah, I mention that. It works on the other side too: iPhones also won't keep batteries charging when they're at 100% so they're protected from such "trickle charging" as well.

coldtea 7y ago

I already covered this - that li-ion takes a hit if totally drained. The point was the degree to which this happens, that modern devices don't let it happen (the shut down much earlier, around 10% or so, so it's a moot point), and that your battery will lose capacity, anyway, due to natural cycle degradation over the course of 2-3 years. More importantly, that such tracking is marginally useful micromanagement (and, Apple's artificial throttling for degraded batteries aside, has nothing to do with affecting a device's speed. A 90% charged device is not magically faster than a 20% charged one). Apple itself, in their document about battery technology and care ignores the "fully drain" issue completely.