Effect of charging on battery wearĪll lithium ion batteries wear down over time and lose capacity. Without it, people may be mislead that 20% DoD is independent of state of charge level, and that just isn't true as wear (or damage to the battery) above 3.92V doubles every 0.1V above it. On an example page, How to prolong lithium based batteries, Figure 5 is from Choi 2002 which we also cite, the discharge cycles in Table 4 is also seen in Asakura 2003 but I'm not sure where the capacity at full charge is from, but Table 2 shows Depth of Discharge vs cycle life without specifying the start and end state of charge or voltage, and I'd like to see the source paper for the specific test conditions. We try to use primary sources (directly referring research papers) as there are lots of conflicting claims on how batteries work and most articles don't cite their sources.īattery University has a lot of useful information in an easy to digest form, sponsored by Cadex, a battery analyzer manufacturer, but unfortunately, the pages don't cite all their data source. We also have more battery related articles in the research section of the help center. This section goes in depth into the research we've done for the charging section of AccuBattery, and explain how exactly setting a lower charge limit helps and how we estimate our wear cycles. It is well known that charging to a lower maximum percentage reduces wear on lithium based batteries, but very often, it is not explained how these conclusions are reached.

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