Battery Indicator

A Battery indicator is a device which gives information about a battery. This will usually be a visual indication of the battery's state of charge. It is particularly important in the case of a battery electric vehicle.

Read more about Battery Indicator:  Automobiles, Electronic Devices, Computers, Batteries Not Part of A System

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Battery Indicator - Batteries Not Part of A System
... A real battery can be modeled as an ideal battery with a specified EMF, in series with an internal resistance ... As a battery discharges, the EMF may drop or the internal resistance increase in many cases the EMF remains more or less constant during most of the discharge, with ... Determining the charge remaining in many battery types not connected to a system that monitors battery use is not reliably possible with a voltmeter ...