How to identify the "human damage" battery?

1. Man-made excessive discharge

The standard for battery over-discharge is currently defined as if the quiescent voltage of the battery 12V series is less than 10.50V, and the 16V series is less than 14V, it is over-discharge. Over-discharge will seriously damage the battery. It is red, and this will not happen in the normal use of electric vehicles.



Precaution

a. When the battery power is not enough, do not use the recovered power to continue using;

b. When the battery is not used for a long time, do not store it under power loss.
        

2. The external heat source causes the battery to defor

The battery case is made of ABS plastic, which will soften when the temperature exceeds 75°C. The battery shell is baked by an external heat source, and spontaneous bulging will occur due to internal pressure. In severe cases, only a layer of film remains at the deformed part (generally, the deformed surface is limited to a single part, and the appearance of other parts is normal).



Precaution

Keep away from heat sources.



3. Human-induced battery deformation

Frequent use of fast charging stations or overcharging can cause the battery to swell and deform. For example, a 60V charger charges a 48V battery, because the voltage of the 48V battery cannot rise to the highest voltage value of the 60V charger, so the charger will always be in working condition, and the entire charging process has been maintained at a high voltage for a short period of time ( Generally within 10 hours) the battery can be deformed. This kind of battery is forced to charge and deform, so the battery itself does not lack electrolyte, which can be identified according to the detection standards of deformed batteries.

Precaution

a. Use a qualified charger that matches the battery (it is recommended to use a charger with time control and temperature compensation);

b. Avoid charging for a long time (more than 12h) without unplugging the charger, especially in high temperature environments;

c. Try to avoid using fast charging stations for charging.        

4. Battery bur
There are two conditions for burns, one is internal short circuit, and the other is external short circuit or poor contact. Internal short circuit means that the plates are connected. If the plates are seriously connected and the battery cannot be stored, this type of battery cannot theoretically be shipped out of the factory. An external short circuit is a battery whose wire breaks and touches the wire and causes a short circuit to burn out. When the battery is installed or used, the connection wire is loose, the resistance of the contact is increased, and the heat causes the battery to burn out.

Precaution
a. Use the national standard cable that matches the battery;
b. After installation, check whether the connecting wires are firmly connected one by one, and check once every three months.
c. Check whether the line is aging every six months        

5. Disassemble the battery for maintenance without permissio
Some consumers find that the electric car is not running far, and mistakenly believe that there is a shortage of water, so they buy so-called "repair fluid" from the market and add it. Due to lack of maintenance knowledge and professional tools, the battery is scrapped. In response to these situations, the manufacturer made it clear that such batteries will automatically lose their free service conditions even during the warranty period.

Precaution
When you suspect that the battery is abnormal, you should go to the battery after-sales service outlets for professional inspection.        

6. 0V battery break
Battery breakage is generally caused by broken internal connections or poor contact. Generally, the breakage caused by manufacturing reasons will have a virtual voltage, and there will be no 0V voltage phenomenon. The occurrence of 0V voltage is generally due to an external short circuit or multiple severe vibrations of the battery that cause internal connections to fuse or break away.

Precaution
a. It is strictly forbidden to directly connect the positive and negative poles of the battery when installing the battery;
b. The battery must be installed firmly and checked regularly. When riding on bumpy roads or over speed bumps, pay attention to driving slowly.

7. Man-made malicious destruction
In order to defraud the company to replace the battery, a very small number of people maliciously damage the battery, such as filling the battery with salt water, alcohol, glue, smashing steel nails and steel needles into the battery from a secret place, and repeatedly artificially shaking the battery to damage the internal structure , The battery is over-discharged artificially with resistance wire, the wire is used to short-circuit the battery externally to damage the connector, and the single battery is inflated with a large charger, etc. The company has zero tolerance for such malicious acts of sabotage.

Man-made malicious damage identification method

a. Perform discharge detection on the battery. Generally, the battery that is destroyed by man will be seriously insufficient or lagging behind;
b. Check the appearance of the battery, and there are signs of unmanned prying on the upper cover, and whether there are deliberate obstructions or signs of damage;
c. Batteries filled with alcohol or other organic solvents generally have a strong smell;
d. Dissecting the abnormal battery.