![]() The indicator is installed in only one of the six battery banks.If you read the numerous reviews about the work of these devices, it becomes clear that they often show inaccurate data and quickly fail. You should not rely entirely on the hydrometer readings. This built-in gauge will give you a preliminary indication of the battery’s state of charge. However, in the case of a maintenance-free battery it will be problematic to do this. This will indicate the necessity of refilling with distilled water. Then the surface of the electrolyte will be visible through the “eye” of the indicator. And another option is to lower the electrolyte level.Then the “eye” of the indicator will be red Some models add a red colored balloon that goes up the tube when the density is low. This will indicate the need for charging. At this point a black indicator tube will be visible in the “peephole” of the indicator. If the ball is sinking in the electrolyte, it means the density is below normal and the battery charge is insufficient.Normally the green ball floats up when the battery is 65 percent or more charged This causes the green ball-shaped float to rise up the tube and become visible through the light guide in the indicator’s peephole. As the battery is charged, the density of the electrolyte increases.The indicator can show three different positions in the following situations: Most hydrometers have the following principle. Schematic diagram of a battery charge indicator Schematically the construction of the built-in battery indicator can be represented as follows. In the picture below, you can see how this indicator looks like on the battery case. Let’s see what it consists of and how it works. This is a float indicator, also called a hydrometer. Back to content Built-in battery charge indicatorīuilt-in charge indicators can be found mainly on maintenance-free car batteries. Let’s consider all these varieties of indicators for the battery in more detail. In addition, there are uncomplicated schemes for making charge indicators with your own hands on the Internet. ![]() They are easy enough to place somewhere in the cabin and plug into the onboard network. Such charge indicators are also produced by third-party manufacturers. They began to make, both on the batteries in the form of hydrometers, as well as additional information displays on the car. Therefore, all kinds of indicators of battery charge began to appear. For those who are new to the automobile business, we advise to read the material about the rate of charge of the car battery. Older cars may have an analog voltmeter, by which it is quite difficult to understand what state the battery is in. But such features are not available on all cars. Therefore, on modern cars in the onboard computer, among other functions, you can find data on the battery voltage. Technology does not stand still and manufacturers of automotive equipment are trying hard to make travel on the car and its maintenance as comfortable as possible. What are the car battery charge indicators? ![]() About such indicators will be discussed in this material. But it would be much more convenient to have a simple indicator that shows the state of charge of the battery. You just need to periodically measure the voltage of the car battery with a multimeter or voltmeter. Actually, checking the degree of charging itself is not complicated. Therefore, the probability is high that you one day will not start the car because of a dead battery. And how many of us control the level of battery charge? It is called, answer yourself this question. And how successful this start will be depends largely on the degree of charge of the battery. The battery plays a key role when starting a car engine. What are the car battery charge indicators
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