button battery cr1620

What are the main inspection methods for button battery cr1620 electric vehicles?

First, you can check for abnormalities such as swelling, leakage, and burning through appearance. When the battery failure cannot be judged by intuitive methods, it is necessary to conduct open circuit voltage testing and button battery cr1620 pack capacity testing on the machine. Batteries that need to be tested on the machine and open circuit voltage testing and battery capacity testing on the machine are divided into abnormal voltage batteries, over-discharged batteries, abnormal discharge time batteries, and charging fever batteries.

1. Use a multimeter to test the quality of electric vehicle batteries

The most accurate method for professional battery capacity testing is to use a discharge meter to test it when it is fully charged. C=W=IUt, that is, the capacity is the discharge current ampere (A) x voltage volt (V) x time second or hour (S or H). Generally, the rated capacity is discharged at a rate of 0.5-2 times. For example, a 12AH battery is fully charged and discharged for two hours at the rated voltage and current. The current size is inversely proportional to the discharge time and discharge capacity. The larger the discharge current, the discharge time is more than one hour at a rate of 2 times, and the discharge capacity is about 8AH. On the contrary, the discharge time can be more than two hours at a rate of 0.5 times, and the discharge capacity can be 15AH.

2. Professional electric vehicle button battery cr1620 pack testing method

1. After the battery is fully charged, connect the battery, ammeter, and resistor wire.

2. The battery is internally broken. Some electric vehicles have internal short circuits in button battery cr1620 packs, which means that the battery has voltage but no current, the vehicle has power but the motor does not rotate. If a new battery is replaced and the vehicle is normal, then it is a battery problem.

3. The green light of the charger does not switch. The green light of the charger does not switch when charging. The green light of the charger is on when it is unloaded. Generally, it is caused by lack of water or dilute sulfuric acid inside the battery. After opening the battery cover, unscrew the one-way valve or safety valve, inject an appropriate amount of special supplementary fluid into the battery, and charge for 6-10 hours to switch.

4. The electric vehicle has a short range. Check whether the no-load current and running current of the vehicle are too large. The no-load current should not exceed 1.2 amperes. The running current should not exceed 7.5 amperes when the load is 75kg, the speed is 20km/h, and the driving is flat cement or asphalt. If the above situation occurs, replace the controller or motor and test again.

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