How To Recognize Whether A Lithium Battery Has Electric Circuit Protective Board?

Lithium battery applications more and more, from small cell phones to electric cars, at present, almost all industries need lithium batteries. It is because of the wide range of applications of lithium batteries, people are also paying more and more attention to the safety of lithium batteries themselves, so lithium battery circuit protective board becomes very important.

The role of lithium battery protection plate we all know, the most basic three points: anti-overcharge, anti-overdischarge and prevent the harm caused by short circuit. But there are a large number of unscrupulous manufacturers on the market, lithium batteries itself is used by second-hand battery cells, the lithium battery protection plate process and quality is not up to standard. There are even some lithium battery manufacturers in order to save costs, there is no lithium battery itself to join the protection plate. This battery flow into the market, although the price is very low, but the potential danger is very big. Therefore, here we advise you not to buy these poor quality cheap lithium batteries for the sake of cheap. Then there are friends will ask, how to know whether they buy lithium batteries with lithium battery circuit protection board?

First of all, let's take 18650 as an example, from the name of 18650 cell, we can know that the height of the battery's cell is 65mm, the diameter is 18mm, so this can be seen, the height of the battery after adding the protection plate should be between 68mm and 72mm, so we can visually inspect the height and roughly identify.

Secondly, we will buy back the lithium battery to discharge, if the battery to 2.3V to stop discharging, then it shows that the lithium battery in the lithium battery protection plate plays a role, if to 2.3V still continue to discharge, we immediately manually disconnect its charging, first of all the battery should not have a protection plate, and secondly on the above mentioned above immediately disconnected from the battery output is also designed to prevent lithium over discharge.

The last way that is to judge by the temperature. If we use lithium batteries on the way to find that the battery itself temperature rises, it is likely to be caused by the positive and negative short circuit, if there is a lithium battery protection board, if a positive and negative short circuit occurs, the protection board will understand the power cut, so there will be no heat this phenomenon exists, on the contrary, if there is no lithium battery protection board, then the battery will not be normal heat.

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