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For repaired lithium batteries, a battery pulse protector is usually attached to the battery to prevent it from sulfiding again. The method of equipping a battery protector is to hang one protector every 12V battery. And conduct testing every 3 months to promptly identify batteries with low voltage, and perform separate charging, discharging, and pulse repair on the battery. This can generally increase the battery life by 1 to 4 years.
The damage to electric vehicle lithium battery packs generally includes the following situations:
1. The lithium battery protection board is damaged, and the electronic components on it are densely packed, making it generally difficult to repair;
2. The battery protection board is intact, but individual batteries may experience performance degradation, making it difficult to locate;
3. The lithium battery protection board is intact, but some batteries are short circuited and need to be checked;
In short, after the failure of electric vehicle lithium batteries, it is difficult to repair them. Usually, it is necessary to seek after-sales service and have the manufacturer's technical personnel solve the problem, or replace the same model of electric vehicle lithium battery pack.
What are the common faults of lithium battery UPS uninterruptible power supply?
When there is mains power, the UPS output is normal, but when there is no mains power, the buzzer keeps ringing and there is no output;
A pair of power amplifier transistors in the inverter power stage were damaged. After replacing them with transistors of the same model, they burned out again after running for a period of time due to excessive current;
After the UPS is turned on, there is no display on the panel and the UPS does not work;
When connected to the mains power, every time the lithium battery UPS is turned on, the relay repeatedly sounds, the UPS panel battery voltage low indicator light stays on, and the buzzer keeps ringing.
The above are the methods and techniques for repairing UPS lithium battery systems. Have you learned them?

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