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Deterioration detected—there is no reference value for the internal resistance of the UPS battery.
Release time:
2019-02-20
Professional battery maintenance personnel know that when a battery starts to degrade, significant voltage abnormalities typically don't become apparent until the battery is in the late stages of deterioration—close to complete failure. Therefore, although batteries in base stations and equipment rooms are equipped with online voltage monitoring systems, simply monitoring voltage online isn't sufficient. Regularly measuring battery internal resistance is crucial for detecting deteriorating batteries at an earlier stage and ensuring the reliable operation of the power supply. In the early and mid-stages of battery degradation, the float charge voltage won't show any noticeable changes; it's only when the battery experiences an open circuit, short circuit, or reaches an extremely severe level of degradation that voltage measurements might reveal problems—but by then, it could already be too late. Fun fact: When differences in battery internal resistance cause uneven voltage distribution...
Professional battery maintenance personnel know that when a battery starts to degrade, significant voltage abnormalities typically only become apparent in the later stages, close to the point of failure. Therefore, although both base stations and equipment rooms are equipped with online voltage monitoring systems for batteries, simply monitoring voltage online is insufficient. Regularly measuring battery internal resistance is crucial for detecting degraded batteries at an early stage and ensuring the reliable operation of the power supply system.
In the early and middle stages of battery degradation, the float charge voltage will not show any significant changes—only when the battery is open-circuited, short-circuited, or severely degraded might voltage detection reveal the problem. However, by then, it’s likely already too late.
Fun fact: When the internal resistance of batteries varies, leading to uneven voltage distribution, using the total pack voltage to control charging and discharging can result in overcharging or overdischarging. Additionally, high internal resistance may cause localized high ripple currents, leading to overheating in certain areas. In severe cases, this can trigger fires or explosions during high-current discharges.
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