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Battery product manual Lead-acid battery maintenance guide: 5 common problems and practical operation skills to extend life

Lead-acid battery maintenance guide: 5 common problems and practical operation skills to extend life

Time:2025-03-01 16:29:01

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Lead-acid batteries are the core components of industrial energy storage, electric vehicles, UPS power supplies and other fields, and their life is directly related to the operating cost and stability of equipment.

Problem 1: Excessive discharge - the "invisible killer" of batteries

Phenomenon: Battery voltage for a long time below 10.5V (12V battery), plate lead sulfate crystallization hardening, capacity irreversible attenuation.

Solving tips:"20% rule" : the depth of discharge (DOD) is controlled within 80%, and the remaining power is ≥20%.

Install a low voltage protector: set an automatic power off threshold (such as 10.8V) to avoid deep discharge.

Problem 2: Sulfation - the culprit of shortened life

Phenomenon: Battery for a long time or long-term insufficient charging, the surface of the plate forms white lead sulfate crystals, internal resistance increases.

Solving tips:Pulse repair technology: The smart repair charger is used to decompose crystals through high-frequency pulses (1 maintenance charge per month is recommended).

"Full charge storage" principle: When idle for more than 7 days, be sure to fully charge and disconnect the load.

Problem 3: Electrolyte imbalance - the double risk of drying and spilling

Phenomenon: Too low liquid level leads to plate exposure oxidation, too high causes leakage corrosion.

Solving tips:"Liquid level calibration method" : Periodically check the height of the electrolyte and maintain it between the highest (MAX) and the lowest (MIN) scale line.

Distilled water supplement: Add only distilled water (never tap water or electrolyte) and check every 2 months in summer.

Problem 4: High temperature environment - every 10 ° C increase, life is halved

Phenomenon: When the ambient temperature is > 35 ° C, the battery self-discharge rate doubles, accelerating plate corrosion.

Solving tips:Physical cooling method: Install a cooling fan or heat shield to ensure air circulation around the battery pack.

Intelligent temperature control BMS: The charger with temperature compensation function is selected to automatically adjust the charging voltage (temperature coefficient: -3mV/℃/ single cell).

Problem 5: The charging method is wrong -- "fast charge" ≠ "good charge"

Phenomenon: High current fast charging leads to battery heating, plate deformation, long-term use capacity plummets.

Solving tips:Three-stage charging method:

1, constant current charging (current ≤0.1C) → 2, constant voltage charging (14.4-14.8V) → 3, floating charging (13.5-13.8V).

Reject "mixed charger" : strictly match the rated voltage and current parameters of the battery.

The ultimate rule of Life extension: 3 Daily habits

Monthly inspection: Check voltage, liquid level, and terminal corrosion, and set up maintenance logs.

Annual deep maintenance: Professional equipment to detect internal resistance and capacity, if necessary to replace the aging monomer.

Cycle activation: The long-lived battery is charged and discharged once every 3 months (10% depth can be).

Conclusion

The life of lead-acid batteries not only depends on product quality, but also is closely related to user maintenance habits. By avoiding the above five "short-life traps" and implementing scientific maintenance programs, the life of ordinary batteries can be extended by 30%-50%, significantly reducing the overall cost of use. For customized maintenance solutions or technical guidance, please contact us!

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