Battery charge indicator
First Claim
1. An improved electrical storage cell for generating electrical charge in response to a chemical reaction comprising:
- a housing having a side region and two end regions;
a charge producing compound in the housing, the charge producing compound being free of charge indicating additives, but itself changing color as the cell charge is depleted;
window means in the housing whereby the charge producing compound can be viewed by a user, the remaining charge of the storage cell being indicated by the color of the charge Producing compound.
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Abstract
An electrical storage cell includes a charge producing compound in the interior of the cell which inherently and without the addition of additives or structure changes color as the charge of the battery is dissipated. The battery includes a window in either the top or the side of the battery to provide visual access to the charge producing compound. A suitable color chart is positioned around the window through the battery housing to enable an observer to see the charge producing compound in the interior of the battery and to compare the color of that charge producing compound against a color on the comparison chart to determine the battery charge remaining in the battery.
87 Citations
12 Claims
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1. An improved electrical storage cell for generating electrical charge in response to a chemical reaction comprising:
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a housing having a side region and two end regions; a charge producing compound in the housing, the charge producing compound being free of charge indicating additives, but itself changing color as the cell charge is depleted; window means in the housing whereby the charge producing compound can be viewed by a user, the remaining charge of the storage cell being indicated by the color of the charge Producing compound. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification