Secret consumers of electrical energy

If the battery, which was still working the day before, suddenly stops producing electric current, most often this means that «secret» the consumer in the on-board electrical network has completely discharged the battery. Check this first by checking the voltage at the battery terminals. Isolate if necessary «secret» consumer.



SEQUENCE OF WORK

1. To determine the leakage current, disconnect the wire from the negative terminal of the battery and connect an ammeter between the battery terminal and the disconnected wire. If, with all consumers disconnected, the ammeter shows current, then you have «secret» consumer of electrical energy.

2. Check all electrical circuits one by one. Connect the wire to the negative terminal of the battery, open the cover of the fuse block, remove the fuses one by one and connect the ammeter probes instead of the fuse. If there is no current, the tested electrical network is working. Even a small current is not a cause for concern. Devices such as the on-board computer, clock, radio and burglar alarms are constantly under battery voltage. But they consume much less electrical energy than with a faulty electrical device.

3. Repeat measurements on the fuse box until your meter shows high current consumption. According to the fuse table, it is necessary to determine which electrical consumers are connected to this electrical circuit.

4. Turn off all electrical devices in this circuit one by one and measure the current drawn each time. If the multimeter no longer shows high current consumption, then you have found «secret» electricity consumer.