A properly working battery will ensure that the engine starts in virtually any temperature condition. Stable operation of the electrical system as a whole largely depends on the quality of the battery, so the voltage of the car battery from the generator must be applied continuously in order to fully charge the battery without external devices.

Otherwise, you will have to push the car every time you need to start the engine or you will need to frequently change batteries, with an incorrectly working generator.

Content

• 1 Reasons for the discharge of the battery
• 2 Self diagnostics charging
• 3 Conclusion

Reasons for the discharge of the battery

To keep the main source of electricity in the car the driver is obliged in the charged state. This is especially important in the winter, when cooling periods can significantly affect battery performance. Also the following situations can be causes of discharge and poor charge reception:

• development of the battery service life (occurs during prolonged or improper operation when lead plates are destroyed);
• the equipment has electrical outlets that ensure rapid discharge of the battery during parking;
• battery charging from the vehicle's generator is intermittent or does not occur accordingly.

In the first case, it is enough to replace the battery with a new one to eliminate the malfunction. When buying, you need to choose an appliance of the appropriate capacity In the second situation, you need to twist the problem with the wiring or additional voltage consumption. To do this, alternately recline consumers, and at this time they measure with a multimeter. The method helps to determine the problem in the leakage current.

To solve the third problem, the generator is monitored. Before checking the battery charging from the generator, we test the degree of belt tension and possible slippage on the pulleys.

If there is no possibility or ability to perform the procedures independently, then the car is distilled off to the car service center. Diagnosis of such problems does not take much time from specialists, as typical breakdowns are most often detected.

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Self diagnostics charging

For those who do not know how to check the charging of the generator, we will show a simple way. When diagnosing, you will need a digital multimeter with a voltmeter mode. The tester switches to a range of up to 24 V. Monitoring is carried out through the output battery voltage. If it is within the normal range, then the process is proceeding correctly.

We connect the contacts from the multimeter with the corresponding contacts of the battery when the engine is running. Indications on the display should be within 13.7 ... 14.4 V. Errors of 0.1 ... 0.2 V during measurement are allowed. If the charge is less, then this is more evidence of the unstable operation of the generator.

It is necessary to know that regular undercharging leads to deterioration of battery characteristics, and soon, to complete failure of the device.

To check the ability of the generator to charge, you need to press the accelerator pedal to about 2000 rpm, at the same time monitor the readings of the voltmeter. When the data is in the working range, it fluctuates a bit, this indicates the correct operation of the generator. If the values ​​drop significantly below the minimum or are approximately in place, then the generator is not in order.

Especially noticeable problems with the electrician in the winter, when a large number of consumers, such as lighting, electric heating of the cabin and the seat is often turned on simultaneously. Indeed, even while the machine is idling, the engine power is not enough for all consumers. This situation is relevant for large cities with their traffic jams.

When running the engine should listen to the sound of the generator. It should not squeak, and also give out a rumble from the problem bearing.

On a muffled car, battery voltage measurements are also taken. Data in a calm state under normal temperature conditions should not be below 12.6 V. Too low parameters will adversely affect the work at the start of the car.

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In some cases, it is sufficient to periodically charge from an external source to ensure a satisfactory battery charge. A similar procedure is done with or without removing the battery.

To conduct a more thorough check you will need to dismantle the generator. With such a test, the control of the rotor winding is monitored, its inspection data should be within 2.3 ... 5.1 Ohms. On the findings of the stator winding working readings should be at 0.2 ohms.

Conclusion

All checks of the generator charge without disassembly take a few minutes. It is advisable to carry them out regularly, especially with a weak battery, so that the problem does not catch the driver on the way. It is enough to have a multimeter in the car, and to carry out diagnostics indoors or in dry warm weather.