Source? If you are letting charge drop in that range and charge again, you are creating charging cycles. Charge cycles reduce the capacity of Li-Ion batteries.

Source? If you are letting charge drop in that range and charge again, you are creating charging cycles. Charge cycles reduce the capacity of Li-Ion batteries. https://support.apple.com/en-us/HT201585 https://support.apple.com/en-us/HT201585