Step 1: Check the external condition of the battery and check if the shape of the battery is intact. Check if the battery casing protrudes, leaks at night, is damaged, and the battery terminals are corroded. If there is such a phenomenon, it indicates that the battery has already died. Need to be replaced. Step 2: Check if the battery voltage is normal. After charging is completed (two hours later), check the voltage of each individual battery in three times, with an interval of 20 minutes between each time. If the voltage of a single battery exceeds 15V or the voltage of a single battery is always below 13V, it indicates that the battery has some doubts. When the discharge is good, use a multimeter to measure the voltage of each individual battery in three steps, with an interval of 10 minutes between each step. If the voltage drop rate of a single battery is faster than other batteries, below 10V, and the discharge time of this battery is the shortest, then this battery is considered a suspicious battery. 3. Check the static voltage (floating) of the individual battery. When the voltage is zero, there are two possibilities: one is that the battery is completely disconnected, the circuit is blocked, and the voltage is zero; Another type is that the battery has been stored for too long, with a voltage as low as 1-2V or even zero. Step 3: Check if the battery electrolyte has lost moisture. Is the blackened electrolyte deteriorating or losing moisture. After charging the battery for 3-6 hours, touch the side of each battery case with your hand. If the battery is hot and hot, the battery will run out of charge. If it's just heating up and the temperature is around 40 degrees Celsius, and the charger keeps turning on a red light while charging, it indicates that the battery is severely damaged; Water loss.; In addition, you can also open the battery cover for testing& Water loss. Status. Whether the electrolyte turns black can directly determine the quality of the battery plate. Open the cover above the battery and you can see six circular holes. Check the color of the electrolyte in each hole. If it is black, it indicates that the lead powder on the board has fallen off and the battery is dead
Function of testing report:
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1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
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