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Old 03-24-2017, 05:31 AM
JAY11 JAY11 is offline
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Replace Going Out 750 CCA Battery With A New 650 CCA?

A friend just wrecked his car and he is stripping it. He has offered me a practically new battery, barely 4 mos since install. Physically it fits but it's a 650 CCA without a breather tube. I am wondering if I can install it on a 2000 Z3 2.3. Currently the car has a Wally Evermaxx 750 CCA dated 2011, it's on the last lap (fiddling around I discovered the breather tube wasn't connected, and seems it hadn't been for the longest time.) Live in Big D Texas, mostly always hot and bare winters. The car is a wifey weekender, with still stock - a regular radio, etc.
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Old 03-24-2017, 10:27 AM
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acoste acoste is offline
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If the battery's capacity (Ah) is the same you are good to go since you are living in Texas.
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Old 03-24-2017, 04:47 PM
nfunk nfunk is offline
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Down sizing from 750 to 650 CCA (cold cranking amps) won't make a difference down in Texas. The vent tube is there to vent explosive vapors (hydrogen and oxygen) out of the trunk, and if any battery fluid that might bubble out if the battery gets to hot during heavy or rapidly charged.
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Old 03-24-2017, 05:13 PM
JAY11 JAY11 is offline
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Quote:
Originally Posted by nfunk View Post
Down sizing from 750 to 650 CCA (cold cranking amps) won't make a difference down in Texas. The vent tube is there to vent explosive vapors (hydrogen and oxygen) out of the trunk, and if any battery fluid that might bubble out if the battery gets to hot during heavy or rapidly charged.
So a batt without a vent should be a no-no in the trunk?
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