- on Power Supplies
- Published in issue 7/2011 on page 66
Battery Charge Monitor
The circuit described here provides monitoring of the charge status of a battery by the continuous measurement of charge and discharge currents. The battery current is integrated over time (respecting its sign), and net consumption is shown on a display. The charge stored in the battery can be calculated as a result of this process, and this calculation does not involve the battery’s terminal voltage.