Battery charger communication system

A charge server (300) comprising:

• a network interface device (326);
• a storage device (330);
• a processing device (310) coupled to the storage device (330) and the network interface device (326), the processing device (310) being configured to:
• receive charge data (120) from a charging unit (200) via a network (110), the charging unit (200) including a charger (210) and the charge data (120) including a charge capacity indicating an amount of charge delivered to a battery (202) during a most recent charging session and a device (20) usage time indicating an amount of time that the battery (202) was off the charger (210) during a period preceding the most recent charging session;
• determine an average discharge rate of the battery (202) based on previously received charge data (120) corresponding to the battery (202);
• determine an estimated state of charge (130) of the battery (202) based on the average discharge rate and a current device (20) usage time, the current device (20) usage time corresponding to a period after the most recent charging session;
• and
• provide the estimated state of charge (130) to a user device (400) for display.

A system (100) comprising:

• a battery (202);
• a charging unit (200) including a charger (210) and a networked device (242), the charging unit (200) being configured to charge the battery (202) and to transmit charge data (120) over a network (110);
• and
• a charge server (300) configured to:
• receive the charge data (120),
• determine an estimated state of charge (130) of the battery (202) after the battery (202) has been removed from the charger (210) based on the charge data (120);
• and
• transmit the estimated state of charge (130) to a networked user device (400), the user device (400) displaying the estimated state of charge (130) to a user (10).

A method (350) comprising:

• receiving, at a processing device (410) of a user device (400), charge data (120) from a charging unit (200) via a network (110), the charging unit (200) including a charger (210) and the charge data (120) including a charge capacity indicating an amount of charge delivered to a battery (202) during a most recent charging session and a device (20) usage time indicating an amount of time that the battery (202) was off the charger (210) during a period preceding the most recent charging session;
• determining, by the processing device (410), an average discharge rate of the battery (202) based on previously received charge data (120) corresponding to the battery (202);
• determining, by the processing device (410), an estimated state of charge (130) of the battery (202) based on the average discharge rate and a current device (20) usage time, the current device (20) usage time corresponding to a period after the most recent charging session;
• and
• displaying, by the processing device (410), the estimated state of charge (130) via a user interface (460) of the user device (400).