Car battery indicator high generator#

To connect the testing device to a battery which is located in the trunk or the passenger compartment, the battery terminals there and not the starting aid contacts in the engine compartment must be used, as the resistance of the cable which is installed in the vehicle would affect the measurement. The sequence for connection and disconnection does not matter. In principle: Connect the red cable to the positive terminal and the black cable to the negative terminal.

Connect the battery tester to the battery terminals to determine the state of charge and the internal resistance.

(Please note the information from the manufacturer of the device.)

To obtain reliable test results, especially with regard to the SOH, it is essential to use modern test devices which are adapted for the new battery technologies. Just as vehicle technology has continued to develop over the years, batteries with new technologies such as AGM or EFB have also developed further. Among other things, the determination of the SOH takes into account the cold start capability (CCA), the residual capacity (Ah) and the charge acceptance (CA).

While the SOC can be simply determined with a voltage measurement, a complex test procedure is required to test the SOH, in order to make a reliable statement about the state of the battery. When testing a start-stop battery, not only the state of charge (also known as the вЂњSOCвЂќ), but also the state of health (вЂњSOHвЂќ) of the battery are important. In addition, the lower the charge (determined by measuring the open circuit voltage), the lower the possible current which can be deliverd during the starting process. Due to aging and wear the capacity of the battery to deliver high currents gradually decreases.

Car battery indicator high generator#

A continuous low charge damages the battery due to sulfation.ДЄs the main load on a conventional starter battery is due to the starting process and after charging by the generator there is no further discharge, the cold start current is decisive in this case. If the voltage falls below 12.4 V, the battery should be recharged as soon as possible. In an ideal case, an open circuit voltage of about 12.8 V is measured with a Multimeter. Correct testing of the battery state by specialist workshopsД«asic principles: Testing of a conventional wet cell battery:ДЄ measuring device which can only measure the state of charge of the battery is suitable to test a conventional car battery. A regular battery check by a specialist workshop is therefore advisable in order to detect an imminent battery failure before a final breakdown occurs. These days, greater demands are made on the battery вЂ“ up to 150 electrical consumers and the automatic start-stop system in modern cars require sufficient power. The reasons for this include the increased electrification of vehicles. According to the latest studies by the German Automobile Club ADAC, in 2017 about 40% of breakdowns were due to the battery.