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Can using a Battery Minder save my batteries?

To determine if either of the popular Battery Minder devices provided any benefit in restoring sulfated batteries, a series of tests were performed on Eclipse 500 batteries manufactured by Enersys. Battery Minder units 244CEC1-AA-S3 and 24041-AA-S3 were used for the tests. For these tests to determine if Battery Minder has any effect in reducing internal resistance (increasing capacity), 4 marginal performance batteries were selected for testing. For the first test, 2 batteries would be used. Battery voltage and internal resistance were measured each day. Initial testing lasted 21 days with daily measurements taken with specialized calibrated equipment. The results of those tests are reco

What's happening inside my batteries?

One of the most common areas of concern for Eclipse operators is battery life. While common sense tells us that all batteries will eventually need to be replaced, the service life of Eclipse 500/550 batteries have failed to meet operators expectations. What makes this situation curious is that the batteries installed in the aircraft are made by Enersys, a company who's battery technology is industry leading and with a reputation for long battery life. So what causes your battery to fail prematurely? In the studies we conducted, the primary cause of battery failure was high battery internal resistance. Increased internal resistance restricts the amount of current that can flow out of the b

What's killing my Eclipse Batteries?

One of the most common areas of concern for Eclipse operators is battery life. While common sense tells us that all batteries will eventually need to be replaced, the service life of Eclipse 500/550 batteries has failed to meet operators expectations. So what causes your battery to fail prematurely? In the studies we conducted, the primary cause of battery failure was high battery internal resistance traced to sulfation of the negative plates within the battery and internal grid corrosion. Sulfation within the battery builds during prolonged periods of charge deprivation. These periods of charge deprivation can be caused by small amounts of battery current drain over extended periods. Th

The Battery Minder, friend or foe?

One of the most frequently debated topics in Eclipse circles is the value of using a battery minder. Some believe that the use of such a device will prolong battery life. Others believe that the use of a battery minder device adds no value, and can actually reduce battery life by increasing grid corrosion. To try and settle this debate we ran a few different tests. While we were able to demonstrate that the Battery Minder was ineffective in reducing permanent sulfation, we were unable to determine if the use of a battery minder produced any positive results. We did however, learn a few interesting items that may be of interest to battery minder users. The Battery Minder has no reverse cur

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