06331761 is referenced by 257 patents and cites 27 patents.

A battery charger (

20

) for charging batteries that evaluates the post-charge state of the batteries. A load resistor (

70

) is associated with each battery. After the charging of the battery, a processor (

124

) receives signals indicating the voltage-at-load of the battery when it is connected to the load resistor. A memory (

282

) internal to the battery stores data indicating the number of times the battery has been charged. The processor, based on the data retrieved from the battery memory determines a minimum charge level for the battery based on the number of times the battery has been charged. Based on the voltage-at-load, the processor determines the charge in the battery and compares this charge to the minimum level. The processor then actuates a display (

34

) on the charger to indicate the results of this comparison. The processor also actuates a display component (

32

) to cause the charger to indicate the charge state of the battery relative to the amount of charge a new, fully charged battery can store.

Title
Battery charger capable of evaluating battery charge state based on the charging history of the battery
Application Number
9/711845
Publication Number
6331761 (B1)
Application Date
November 13, 2000
Publication Date
December 18, 2001
Inventor
Donald Malackowski
Schoolcraft
MI, US
Yashdeep Kumar
Kalamazoo
MI, US
Agent
Flynn Thiel Boutell & Tanis P C
US
Assignee
Stryker Corporation
MI, US
IPC
H01M 10/44
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