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Six problems of Lithium-Ion Battery can be repaired
Battery plate softening and repair method

After discharging the battery to 10.5V, discharge the battery deeply with the bulb for 1-5 hours. Then use a dedicated battery activation instrument for activation and maintenance.

Battery imbalance, maintenance method

First, check the battery, then find out the problem battery, and use the battery with the same capacity, voltage, self-discharge rate, and internal resistance to match the battery, and then use it again.

Repair method of water and liquid loss of battery

Water loss is the most common problem and is easier to repair. First, pry off the cover above the battery, open the rubber cover to expose the vent, and then use a dropper to suck distilled water into the battery through the vent. Cover the vent of the water-filled battery and cover the vent with a breathable protective cover to prevent dust from falling into the vent. The principle of rehydration is to take less but not more. If it's not enough, you can add it. If the dosage is too much, the acid ratio will be reduced and the battery capacity will be insufficient.

Vulcanization and repair method of a battery plate

Vulcanized batteries are repaired with special repair tools. By measuring the state of the battery, it continuously emits positive and negative frequency conversion particle waves during charging and discharging. It takes 10 to 20 hours to remove hard lead sulfate that has crystallized in the battery.

Battery internal short circuit damage and repair method

If a single battery short circuit or fault is detected, please use a soldering iron to open the sealant of the single battery. Remove the connecting strips at both ends of the single battery, and then take out the board group of the single battery. According to the situation, correct the curvature of the plates or replace them with new plates. After that, the repaired batteries must be charged separately. Finally, the whole battery pack should be charged, and the relative density of the electrolyte of each battery should be adjusted.

Battery open circuit and repair method

Use a multimeter to measure the open circuit of the battery, and then use 100A to detect the battery voltage 0V as the open circuit. Use a single measurement method to measure open circuit and weld.

Lead-Acid Battery Knowledge
What is the lead-acid battery?

Lead-acid battery, the electrode is mainly made of lead, the electrolyte is a kind of battery with a sulfuric acid solution. The lead-acid battery is a kind of power supply with the most mature technology, the largest consumption in various fields, the largest market sales, and the longest service life in China. The lead-acid battery used in electric bicycle belongs to lean liquid type, low type valve-controlled sealed type, and square power lead-acid battery.

How does the lead-acid battery work?

Each type of battery has the ability of electrochemical conversion, that is, the stored chemical energy is directly converted into electrical energy. As for the secondary battery (another term is also called the rechargeable portable battery), chemical energy is converted into electrical energy during the discharge process, and the electrical energy is converted into chemical energy during the charging process. This process can be charged and discharged more than 500 times according to the electrochemical system.

What are ideal applications for lead-acid batteries?

Green new energy electric vehicles such as pure electric vehicles, hybrid electric vehicles, electric sightseeing vehicles, electric sweepers, electric cleaning vehicles, electric patrol vehicles, etc., as well as walking cars, lawnmowers, ball cars and medical equipment, Baby carriage, scooter, Forklift, tractor, carrier, underground mining locomotive. As a professional lead acid battery supplier in China, Tianneng Group can provide you with high-quality lead-acid batteries that are suitable for various occasions. 

What are the advantages of the Tianneng lead-acid battery?

Low price: the price of lead-acid battery is 1 / 4 ~ 1 / 6 of the price of other types of batteries. One time investment is relatively low, most users can afford it.

What do I need to know about lead-acid batteries charging?

The battery life can be prolonged by keeping proper charge and discharge. Maintaining 10% - 90% of the lithium-ion battery power is conducive to protecting the battery. It is not necessary to reach the maximum value when charging the batteries of digital products such as mobile phones and laptops.

Lithium-ion batteries’ charging temperature range: 0 ~ 45 ℃, discharge temperature range: 0 ~ 60 ℃.

Lithium-ion batteries must avoid overcharging in the process of charging. Any form of overcharge of the lithium-ion battery will lead to serious damage to battery performance.

Can continual undercharging harm a lead-acid battery?

There is no so-called "memory" phenomenon in a lead-acid battery, and the performance of the lead-acid battery will not be affected if the charging is interrupted. However, in the case of power loss, long-term storage has an impact on battery life. The longer the storage time is, the greater the impact is.

What are the safety precautions for lead-acid batteries?

There is a strong corrosive sulfuric acid solution in the battery, please keep away from children. Please take protective measures during safety inspection. If acid splashes on the skin or clothes, it should be washed with a large amount of water immediately. If it is serious, it should be sent to the hospital for treatment.

The positive and negative poles of the battery can not be short-circuited or reversed, which will easily lead to fire and other major accidents.

When the battery is charged, hydrogen and oxygen are produced, so it can't contact sparks. In summer, the battery can't be exposed to the sun.

It is strictly forbidden to over-discharge, under charge, and overcharge during use.

How to use lead-acid battery correctly?

Initial charging. New or long-term storage batteries should be discharged for the first time before use. The steps are as follows:

① First, screw out the water cap to remove the seal of the small hole on the cover, so that the air is unobstructed.

② Add the prepared electrolyte with a density of 1.285 (note that sulfuric acid should be slowly injected into distilled water when preparing electrolyte), and add it to 10-15mm above the partition plate.

③ After the electrolyte is added, the positive and negative electrodes of the battery and the positive and negative electrodes of the power supply can be connected and ready to discharge after standing for 2-3 h.

④ The initial charging is carried out according to the current and time specified in table 2-59. In the first stage of current charging, the terminal voltage of each small cell was increased to 2.4V, and then the second stage current charging was used until the voltage and electrolyte ratio did not change within 3 h.

Do not short circuit the battery. When the positive and negative electrodes of the battery are electrically contacted by external materials, the battery will be short-circuited. For example, the battery without a package in the pocket will be short-circuited due to contact with metal materials such as keys or coins.

Install the battery correctly so that the polarity mark of battery ("+" and "-") corresponds to the mark of the electric appliance correctly. If the battery is incorrectly installed in the appliance, it may be short-circuited or charged, resulting in a rapid rise in battery temperature.

Don't try to charge the battery. Charging the primary battery that cannot be charged will generate gas and heat inside the battery.

Do not force discharge the battery. When the battery is forced to discharge, its voltage will be lower than the design performance and gas will be generated inside the battery.

Do not heat or directly weld the battery. When the battery is heated or welded, the heat will cause a short circuit inside the battery.

Tianneng Battery Group
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