Battery Reccomendation
01-04-07, 03:44 PM
#51
BMW Tech
Join Date: Mar 2002
Location: Auburn, Alabama
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I've got a Die Hard battery that was new when I got the car over 5 years ago. Never had a bit of trouble out of it. Even when my alternator went dead and the lights, etc, were putting a hell of a strain on the battery.
01-04-07, 08:11 PM
#52
rebreaking things
Join Date: Apr 2006
Location: Manhattan
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Thought a few other people might have an interest in the following email:
Original Message:
Reply:
Original Message:
Subject: CCA comparison with Optima batteries
I am thinking about purchasing a 925 or 1200. One thing I noticed is that the CCA rating for the two batteries is lower than the Optima Yellow top batteries of the same weight.
http://www.odysseybatteries.com/files/techbook.pdf
http://www.optimabatteries.com/publi...cal_specs.html
What accounts for the difference?
I am thinking about purchasing a 925 or 1200. One thing I noticed is that the CCA rating for the two batteries is lower than the Optima Yellow top batteries of the same weight.
http://www.odysseybatteries.com/files/techbook.pdf
http://www.optimabatteries.com/publi...cal_specs.html
What accounts for the difference?
info@odysseybatteries.com Our CCA rating is based on 30 seconds of cranking at zero degrees. The Optima specs are based on the starting power of the battery at zero degrees. They are different tests. Cranking on an engine for 30 seconds will ruin your starter and it shouldn’t take more than a couple of seconds to spin your motor. The PC925 has 925 cranking amps and the PC1200 has 1200 cranking amps. The Optima Yellow top has 900 cranking amps but is physically larger the PC925 or 1200. Our PC1500 is the same size as an Optima but has 1500 cranking amps.
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