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What are the methods to judge the quality of Panasonic battery?

  I believe everyone is familiar with Panasonic battery, so do you know how to judge the quality of Panasonic battery? Let's listen to Xiaobian's introduction for friends who are not clear yet!

  1. Judging from the appearance: observe whether the appearance is deformed, bulged, leaking, cracked, blown, scorched, and whether there is oxide exudation at the screw connection.

  2. On load measurement: if the appearance is normal, the ups works in battery mode, with a certain amount of load. If the discharge time is obviously shorter than the normal discharge time, after 8 hours of charging, the normal standby time cannot be restored, so the battery is judged to be aged.

  3. Measure with Multimeter:

  A. measurement under battery discharge mode: measure the voltage of each battery terminal in the battery pack. If the voltage of one or more battery terminals is obviously higher or lower than the nominal voltage (nominal voltage 12V / section), judge the battery aging.

  B. measurement in mains mode: the charging voltage of each battery terminal in the battery pack. If the charging voltage of one or more batteries is obviously higher or lower than other voltages, the battery aging is determined.

  C. measure the total voltage of the battery pack: the total voltage of the battery pack is obviously lower than the nominal value (take the nominal value of the c1k battery pack as an example). After 8 hours of charging, the battery cannot return to the normal value. Even if it returns to the normal value and the discharge time does not reach the normal discharge time, the battery is judged to be aged.

  D. battery startup measurement: the ups does not start or connect to the mains power. First, use a multimeter to measure the total voltage of the battery pack. Take c1k as an example. At this time, the voltage may be between 36V and 40V, which belongs to the normal value. Do not leave the probe. Keep an eye on the indicator of the multimeter, and then connect the startup key. If the total battery voltage immediately drops below 30V or even more than a dozen volts, the ups will automatically shut down immediately, and power up after shutting down The pressure immediately returns to the original value. Determine battery aging.

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