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> Commercial cells have 500-800 cycles in their lifetime (until their capacity falls to 80%) What does this mean? I feel like I charge my phone more than 500-8
by csours 9y ago
> Commercial cells have 500-800 cycles in their lifetime (until their capacity falls to 80%)
What does this mean? I feel like I charge my phone more than 500-800 times.
- phinnaeus 9y agoOnce a day for ~two years, and then the capacity is at 80% of original. Seems pretty accurate to me.
- hwillis 9y agoUnder standard test conditions. That means 100% depth of rated discharge at a set speed (between 1 and .1 C, ie fully charged/discharged in 1-10 hours) and temperature. Cycle life increases dramatically at lower depth of discharge, so if you normally recharge your phone when it gets to 10% it'll last twice as many cycles. High temperature and fast discharges will reduce that. Essentially your phone is rated to be driven to 0% once a day for ~2 years, give or take a bit. Less if it gets hot, which it will, because the battery is used as a heatsink for the rest of the phone.