Medical Device Battery: Signs Of End Of Life And What To Do

Part of troubleshooting your battery-powered medical device involves checking battery life. These items become subject to wear and tear and require specific handling guidelines. Part of the assessment process includes the use of run-down testing procedures. Consider the following factors during the end of life of your medical device battery and the things you need to do.

Capacity to Store Energy

One way to measure the life of a medical device battery involves the capacity to store energy. The approach examines the reliability of battery packs and determines whether performance continues to address acceptable range. In some machines, specific indicators provide data on the number of energy received and distributed. The decrease in coulomb count helps in the diagnostics.

It is also essential to perform calibration on batteries. For instance, a 7.4v Lithium Ion Battery pack require calibration to maintain the accuracy of reading capacity levels. The typical approach for calibration involves performing full charge, discharge, and charge cycles. Larger batteries, on the other hand, feature the use of rapid test methods to provide a non-invasive way to assess current capabilities.

Internal Resistance

Another test to determine the end of life involves internal resistance. The process focuses on the analysis of how a battery pack delivers current to the device. The test allows users to determine whether the battery continues to perform on its optimal or starts to dwindle in capacity. Having consistent lower internal resistance in your medical device is an indication of the need to replace the battery.


Self-discharge helps in identifying mechanical integrity of a battery. For instance, a medical device with a 7.4v Lithium Ion Battery pack can undergo testing to determine acceptable levels. Measuring self-discharge involve performing readings and monitoring voltage neutralization. These will help identify the percentage of the rated AH. A good battery should show around the levels of 5% per month. Consider seeking manufacturer's assistance if the percentage starts to go down or up on a consistent basis.

Replacement and Disposal

After validating a battery’s end of life, it is essential to address replacement and disposal. The replacement part focuses on changing batteries either through in-house or through the manufacturer. Consider contacting the device manufacturer to determine replacement availability and process. They will decide whether the device needs to be pulled out of service to accommodate battery replacement.

Disposal features following local regulations on how to discard a battery. You should always follow standards for handling, safety, and clearance. The best approach to deal with the problem is contacting the medical device manufacturer or read the manual to determine the necessary steps.

The Bottom Line

Overall, medical device batteries follow a cycle from the start of usage until replacement. The points above identify points that help determine a battery’s functionality. Each approach helps validate ways to diagnose potential problems. These measures can also specify the end of useful service life. As a batter pack reaches such stage, it is crucial to exercise proper replacement and disposal. Carefully reading your device manual or communicating with the manufacturer provide beneficial inputs of how to go through the process.

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