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In general, there are four types of battery leakage, and the most common one is poor sealing between the top cover and bottom groove, which leads to cracking; And there are also cases of safety valve leakage and wiring leakage, but the probability is not high; The last type is leakage from other parts. There are several ways to handle these four situations:

1. Check the shell of the battery, often due to improper installation of the battery, welding slag in the frame battery box, and bumps caused by the low chassis of the frame, the shell is damaged

2. Open the cover plate to check for any signs of acid leakage around the safety valve, and then open the safety valve to check for any flowing electrolyte inside the battery.

3. If there are no abnormalities in the first two steps, an airtightness test should be conducted, which is to pressurize and inflate the water to check for bubbles. If there are bubbles, it indicates that there is an omission, and if not, it indicates that it is normal.

4. When charging, observe whether there is flowing electrolyte, and if so, remove it.

Once the leak is found, clean the surrounding area with a small knife and use battery specific adhesive to firmly seal the leak. The reason for battery leakage is closely related to the quality of the battery itself, so users must identify genuine and high-quality batteries during the purchasing process. During the use of electric vehicle batteries, various problems are inevitable, and for experts, these are small problems. For laypeople, due to lack of understanding of operational errors, the battery may eventually be scrapped and have to be repurchased. According to the feedback data from the survey, one of the most common problems is battery leakage. There are the following inspection and handling methods for battery leakage

1. Lack of sealing between the upper cover and the bottom groove; Or due to collision, the sealing adhesive may crack and cause leakage.

2. Acid and liquid leakage at the wiring terminals.

3. Acid leakage from the cap valve.

4. Other parts show acid and liquid leakage.

Leakage fault inspection method

1. Firstly, locate the leaking area and determine whether the liquid in the leaking area is water or acid (professional testing can be done using a pH test paper or by smelling the odor. Generally, acid has a pungent odor. Alternatively, wipe off the liquid in the leaking area and check for any liquid after 12 hours).

2. After determining that it is indeed an internal leakage of liquid, check for any damage or impact marks at the leakage point, or for any prying marks on the battery cover.

3. After there are no obvious traces on the appearance, follow the general steps for detecting leaking batteries for confirmation.

Preventive measures for liquid leakage

1. When installing the battery, it should be firm to prevent direct contact with hard objects, and shock-absorbing pads can be added.

2. The terminal to be soldered should not be soldered for too long to prevent damage to the internal structure of the terminal.

3. Do not use too much force when tightening the screws, just tighten them.

4. Do not open and add liquid to batteries during the after-sales period without authorization. After adding liquid to batteries outside the after-sales period, all excess liquid should be drained in a float state.

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