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Related Experiment Videos

Batteries: what causes them to fail?

Isidor Buchmann1

  • 1Cadex Electronics Inc., Vancouver B.C., USA.

Biomedical Instrumentation & Technology
|June 10, 2003
PubMed
Summary

Rechargeable batteries degrade gradually, not suddenly. Implementing a performance-based replacement strategy for batteries, instead of fixed schedules, optimizes performance and reduces costs.

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Area of Science:

  • Materials Science
  • Electrical Engineering
  • Reliability Engineering

Background:

  • Rechargeable batteries exhibit gradual capacity fade over time due to aging, cycling, and environmental factors.
  • Sudden battery failure is uncommon; degradation is a progressive process impacting performance.
  • Current fixed-schedule battery replacement strategies are often inefficient and costly.

Purpose of the Study:

  • To advocate for a shift from fixed-schedule battery replacement to a condition-based maintenance approach.
  • To highlight the economic and operational benefits of proactive battery health monitoring.
  • To reduce unexpected equipment downtime and associated costs.

Main Methods:

  • Analysis of battery degradation patterns.
  • Development of performance thresholds for battery replacement.
  • Evaluation of maintenance program cost-effectiveness.

Main Results:

  • Battery capacity diminishes progressively, influenced by usage and environmental conditions.
  • Condition-based monitoring allows for targeted battery replacement, optimizing resource allocation.
  • Proactive maintenance significantly reduces unexpected downtime and operational expenses.

Conclusions:

  • Periodic analysis and replacement of batteries below performance thresholds are more effective than fixed schedules.
  • Implementing a performance-based battery maintenance program enhances operational reliability and financial savings.
  • This approach mitigates risks associated with unexpected battery failures, improving user safety and reducing potential liabilities.

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