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987 Forum Discussion about the Cayman/Boxster variants (2004-2012)

2009 Cayman battery explodes!!!!!!

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Old Feb 15, 2016 | 02:07 AM
  #16  
HTM3's Avatar
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I have my 993TT connected to the Deltran Battery Tender Plus. Connected to the battery through the quick connect/disconnect wire.. Not the alligator clips. I push the latch in so that the light turns off and keep the hood ajar. The car is covered with OEM cover. Its a tight cover. Do I have gas build up issues to worry about? I drive the car maybe once every 4-5 weeks but will do more during summer. Any input would be appreciated. I don't want the battery blowing up.
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Old Feb 15, 2016 | 09:37 AM
  #17  
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extanker
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i think it is still recommended that batteries be charged in open air......many do not follow this advise and are okay. if you are using a trickle/maintainer you have less to worry about compared to a charger putting 20 amps in it. i see your cars biggest threat is it dying of boredom because you drive it so little
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Old Feb 15, 2016 | 11:49 PM
  #18  
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Battery exploding is scary stuff. In my younger days, I was removing a fairly new Sears Diehard battery out of a Chrysler that I was about to trade in. Had disconnected one cable(don't remember which since this was 30 yrs ago) & just happened to have moved my head from being right over the top of the battery when it exploded! Sounded like someone had shot a .38 right next to my head! A real Coming to Jesus moment to say the least! I only got acid on my arms & shirt, fortunately my eyes were spared! Never found one of the fill caps, guess it disappeared in the engine bay after slamming against the inside of the hood. I never put my head anywhere near a battery after that experience! Guess tomorrow I need to ensure I vent the battery on the one 928 that I keep on a Battery Tender!
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Old Feb 21, 2016 | 03:19 AM
  #19  
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on all the newer Porsche cars I've looked at (not that many, mostly my own) there is a vent on the battery that takes gasses outside of the compartment - I wonder if it was not connected. I've only seen batteries explode when discharged very rapidly.
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