{"id":2079,"date":"2023-03-03T10:10:13","date_gmt":"2023-03-03T10:10:13","guid":{"rendered":"https:\/\/harveypoweress.com\/?p=2079"},"modified":"2023-09-11T05:30:55","modified_gmt":"2023-09-11T05:30:55","slug":"self-discharge-of-battery","status":"publish","type":"post","link":"https:\/\/harveypoweress.com\/sp\/self-discharge-of-battery\/","title":{"rendered":"Comprender correctamente la autodescarga de la bater\u00eda"},"content":{"rendered":"

Correctly Understand the Self Discharge of Battery<\/span><\/h1>\n
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Views: 8535<\/span><\/div>\n
Author: admin<\/span>\n <\/div>\n
Publish Time: 2023-03-03<\/span><\/div>\n <\/div>\n

\"The<\/p>\n

Are you using or buying batteries? It's important to understand a battery's self-discharge\u2014the process by which the energy stored in a battery decreases even when it's not in use.<\/i><\/em><\/span><\/p>\n

Don't worry if you don't know what this means, we'll dive into all aspects related to self-discharge and how it can affect your use.<\/i><\/em><\/span><\/p>\n

In<\/i> today's blog post, we'll discuss what causes batteries to self-discharge, understand why this phenomenon is necessary, so we can take appropriate steps to extend lithium battery cycle life<\/a> <\/i>.<\/em><\/span><\/p>\n

So let's start to better understand how self-discharge works!<\/i><\/em><\/span><\/p>\n

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What is Self\u00a0Discharge\u00a0of Battery?<\/span><\/h2>\n

Theoretically, the batteries do not react with each other when they are not in use, and the redox reaction only occurs when the appliance is connected to the battery.<\/span><\/p>\n

However, in real life, ordinary batteries, including dry batteries<\/span><\/a> (alkaline), will produce chemical reactions inside the battery. That is, there is no connection between the electrodes, and a very small amount of chemical substances in the battery will react.<\/span><\/p>\n

Many see circuits as just one possible way to direct the flow of electrons to their desired location. There are also things like degraded electrolytes, leaks<\/a>, etc., but the most prominent ones are due to the chemistry of the battery itself.<\/span><\/p>\n

These internal reactions reduce the battery's stored charge, gradually reducing the battery's capacity<\/span><\/a><\/span>. This phenomenon is called self-discharge.<\/span><\/p>\n

The Major Causes of Self Discharging in Battery<\/span><\/h2>\n

(1) 3 Main points<\/span><\/h3>\n
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  1. After the battery is stored for a long time<\/span><\/a><\/span>, the sulfuric acid will sink, causing a potential difference between the upper and lower plates, and the electrolyte overflowed from the battery will accumulate on the surface of the battery cover, and the positive and negative polarities will form channels, resulting in self-discharge.<\/span><\/li>\n
  2. The electrolyte and battery plate materials are impure, and a potential difference is formed between impurities and the plate and between different impurities deposited on the plate, and partial discharge is generated through the electrolyte.<\/span><\/li>\n
  3. The active material of the battery<\/a> plate falls off, and the lower part of the deposit is too much, resulting in a short circuit of the plate, and the upper and lower layers of the battery electrolyte, resulting in self-discharge.<\/span><\/li>\n<\/ol>\n

    (2) Physical factors<\/span><\/h3>\n

    Why does a battery placed in a circuit breaker lose its charge<\/a>? Physical factors mainly come from the loss of electrochemical substances inside the battery and internal short circuits.<\/span><\/p>\n

    The loss of battery material is irreversible and will cause the loss of battery capacity, but loss refers to the embodiment of capacity recovery performance. For example, the power loss caused by a short circuit will consume current power, and the capacity will not be affected by this part of the reaction.<\/span><\/p>\n

    The sum of capacity loss (irreversible) and simple power loss (reversible) is the self-discharge amount.<\/span><\/p>\n