US Patent 10071648 Avoidance of electrode plating in a battery cell

A method avoids lithium plating of a negative electrode in a battery cell. A voltage level of a positive electrode is determined in an initial battery charging process having a charging power level. A charging rate is modified in response to the determined voltage by increasing or decreasing the charging rate when the voltage is respectively less or greater than a voltage threshold. A charging profile is recorded for the power level. A subsequent charging process at the same power level is controlled using the recorded profile, which is possibly age-indexed to an age of an actual battery used in the subsequent charging process. A system includes the battery cell and a battery cell cycler device programmed to execute the method. An electric machine may be connected to the battery cell and a load, with a controller controlling the subsequent charging process using the profiles.