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The BMW Range
3 Series
E90, E91, E92, E93
E90 BMW 325 M Sports 2007' battery
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<blockquote data-quote="IsaacVky" data-source="post: 373457" data-attributes="member: 12652"><p>When the car is not moving, the only thing that is utilizing your battery is the alarm system which is insignificant compared to the battery power drawn during cranking up the engine and alternator will take over from here on and charging the battery. That said, MOST if not all of the time battery is not utilized fully. </p><p>On your question of why it only lasted 2 years @ 100k KM, if you do your driving in city most of the time and less than 10KM, battery will undercharge, and to make it worse, more frequently cranked. Thus battery lifespan will decrease. If you did it mostly on highway for a long distance, battery should last longer.</p></blockquote><p></p>
[QUOTE="IsaacVky, post: 373457, member: 12652"] When the car is not moving, the only thing that is utilizing your battery is the alarm system which is insignificant compared to the battery power drawn during cranking up the engine and alternator will take over from here on and charging the battery. That said, MOST if not all of the time battery is not utilized fully. On your question of why it only lasted 2 years @ 100k KM, if you do your driving in city most of the time and less than 10KM, battery will undercharge, and to make it worse, more frequently cranked. Thus battery lifespan will decrease. If you did it mostly on highway for a long distance, battery should last longer. [/QUOTE]
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The BMW Range
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E90 BMW 325 M Sports 2007' battery
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