Battery charge indicator

Details Battery charge indicator Battery charge indicator

1994-07-22

1997-03-25

Nguyen, Matthew V.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

324428, 340636, H02J 704

Patent

active

056148070

ABSTRACT:
A low-cost battery charge indicator is provided which is capable of indicating a quantity of charge upon a battery or battery pack. The charge indicator includes positive and negative battery terminals and a charge gauge circuit mounted within a battery pack or a battery-powered electronic device. The positive and negative terminals are adapted to receive a battery and to test the battery charge within the battery during times in which the charge gauge circuit is active. Activation of the charge gauge circuit occurs by depressing a momentary switch coupled between the charge gauge circuit and the battery terminals. Upon activation of the switch, one of three LEDs will emit light informing the user of the state of charge upon the battery or battery pack. The switch remains normally open to avoid current draw from the battery during non-test times.

REFERENCES:
patent: 4027231 (1977-05-01), Lohrmann
patent: 4536757 (1985-08-01), Ijntema
patent: 4876632 (1989-10-01), Ousterhout et al.
patent: 5105180 (1992-04-01), Yamada et al.
patent: 5345392 (1994-09-01), Mito et al.

Affiliated with

Also associated with

Rating

Battery charge indicator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Battery charge indicator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Battery charge indicator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2206174