battery dead
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Join Date: Jan 2012
Location: Newport Beach, California
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I was using a 2 amp charger. Just put 10 amp charger on and it goes back and forth from charging to fully charged. I don't have a meter to test voltage but something is draining the battery. Break light and front yellow lights stay on can't shut them off. It's a 2007 XK. Could it be something other than the battery? Battery in the FOB is only 6 months old and that's not working.
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Agree here and if there are lights on without the ign. then he has a something else going on. Also a 2 amp charger won't hack it.
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On the Xk there's just too much 'stuff' that's in standby mode all the time waiting to be woken up by the can bus. When the bus voltage drops from a weak / dying battery the 'stuff' think it's being woken up, powers itself up and finishes the job killing the battery. Once you get over the thresh hold where the battery is acting like a shock absorber and keeping the voltage stable the 'stuff' will stay asleep while the charger finishes the job.
On mine the auto lights, auto wipers, HVAC and the alarm would all try to power up on a dead battery. It was a challenge understanding what was going on. Only fix was to pull the cable and charge the battery up.
On mine the auto lights, auto wipers, HVAC and the alarm would all try to power up on a dead battery. It was a challenge understanding what was going on. Only fix was to pull the cable and charge the battery up.
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zoeooe (10-15-2017)
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Sean W (10-17-2017)
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My new Bosch AGM failed after four months. Obviously it was covered under full warranty, but it would not hold a charge.
By way of comparison, I had an Optima Red Top AGM last for nearly 11 years in a car that was infrequently driven. That battery was always disconnected when stored.
By way of comparison, I had an Optima Red Top AGM last for nearly 11 years in a car that was infrequently driven. That battery was always disconnected when stored.
Last edited by GordoCatCar; 10-17-2017 at 08:52 PM.
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It was the new (to me) XKR. During the sale, after previous owner and I agreed on price, he garaged the car. Two weeks later getting ready for transaction, the battery was dead. Owner put new battery in as opposed to recharging old one. Good example of how being a member here helped me understand that batteries in X150's are known issues and that there was nothing wrong with the car and I should proceed with the sale.
Bosch makes the Battery. Premium Battery Part #: 49-850BAGM. And yes, direct replacement, although I had to pull the battery and swap at the store. Heavy MF indeed.
Last edited by GordoCatCar; 10-18-2017 at 07:16 AM.