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Old 12-08-2010, 09:06 AM
jvwiv jvwiv is offline
Join Date: Dec 2010
Location: Florida
Posts: 2
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x5 4.4i After market Battery

Hi Guys, I recently changed out my x5 4.4i battery with an after market battery. Everything was working fine for 4 months, but now I am getting the fasten seat belt warning appearing randomly as well as the air bag light coming on randomly.
I just took the car in for service and BMW is claiming it is all related to the aftermarket battery.
In these posts I see many other folks asking the same questions, do I really need to pay over $350 USD for a battery when I can buy one down the road for $70-100 USD?
I'd like to understand what output (voltage and amperage) the battery should be providing to the car and if there is any one else who is experiencing the same issue. (Or is my dealer trying to make a few extra bucks off me???)
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