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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > Battery Testing Results - Need Expert Opinion



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      03-07-2011, 08:23 PM   #1
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Battery Testing Results - Need Expert Opinion

I think my battery is on its way out so I picked up a battery load tester and tested it this evening. Can someone help me interpret the results?

Voltage


Load Test


Charging System


Spy Hole
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      03-07-2011, 08:50 PM   #2
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its 4 years old...and you live in a very cold climate. How long after you stopped driving it was the battery at 12.4 volts? 12.4 volts isnt horrible but it isnt 100% either. Id recommend replacement with the proper oem battery.
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      03-07-2011, 08:55 PM   #3
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I tested the voltage 15-20 minutes after I got home, however, I have noticed that the voltage will drop slightly the longer I wait.

You're right, it's probly time for a new battery. I'm just dreading the expense.
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