CPC H01M 10/4285 (2013.01) [G01R 31/371 (2019.01); G01R 31/3835 (2019.01); G01R 31/392 (2019.01); H01M 10/446 (2013.01); H01M 10/48 (2013.01); H02J 7/005 (2020.01); H02J 7/00032 (2020.01); H02J 7/0036 (2013.01); H02J 7/00047 (2020.01); H02J 7/0049 (2020.01); H02J 7/0069 (2020.01); H02J 7/00712 (2020.01); H02J 7/00714 (2020.01); H02J 7/00718 (2020.01); H02J 7/007192 (2020.01); G01R 1/203 (2013.01); G01R 13/02 (2013.01); G01R 19/0069 (2013.01); G01R 31/006 (2013.01); G01R 31/364 (2019.01); G01R 31/378 (2019.01); G01R 31/379 (2019.01); G01R 31/3842 (2019.01); H01R 13/025 (2013.01); H01R 13/6616 (2013.01); H01R 13/6625 (2013.01); H01R 13/6683 (2013.01); H01R 13/6691 (2013.01); H02J 7/0048 (2020.01); H02J 7/007194 (2020.01)] | 20 Claims |
1. A battery charger configured to identify a bad battery condition for a lead acid battery, the battery charger comprising:
a processor operatively coupled with a voltage sensor;
a non-transitory memory device operatively coupled with the processor;
a power management device to receive an input power and to output a charging current during a charging process;
a display device electrically coupled to the processor; and
a pair of electrical conductors to electrically couple with the lead acid battery, wherein the battery charger is configured to:
measure, via the voltage sensor, a first battery voltage of the lead acid battery connected across the pair of electrical conductors;
supply, via the pair of electrical conductors, the charging current to the lead acid batter for a first period of time;
measure, via the voltage sensor, a second battery voltage of the lead acid battery connected across the pair of electrical conductors after the first period of time;
determine a rate of change of voltage (dv/dt) for the first period of time; and
display a bad battery indicator via the display device if the rate of change of voltage (dv/dt) is less than a rate of change of voltage value.
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