Should I disconnect my battery since I will be gone for a month to avoid draining it? If I do, will it mess up any electronics? Any other alternative, if any, to avoid having a dead battery if I don't disconnect? Thanks

 

just leave it connected. it will be ok

 

I guess you have been in the same situation before. Thanks for responding

 

A real good battery might make it but a normal battery may die or not have enough power left to start the car when you try to crank it. If you leave it connected, be prepared to jump it when you get back.

 

Let say it ended up needing a jump, would it mess up any electronics? I had bad experience jumping my mercedes ml430, the electronic key went bad and ended up replacing it. Just want to know what will be the consequence. Thanks

 

I have a battery drain issue... if my car sits for more than 7 days without being driven the battery dies (2011 car with a brand new battery) This has now happened to me three times. The last time the windows didn't go back up correctly but after the third time putting down the top I didn't have an issue any longer. The only thing I have had to do is reset the clock. Everything else runs fine.

 

My experience XC60 AWD, 2010, 19,600 miles, T6 engine...sat for 8 days while mother-in-law was away. Battery drained to 3 volts. Not even a click when trying to start, just dead. I trickle charged it to 12 volts, held 12 volts for two days...drove it to Volvo for battery test...had a bad cell...was replaced under warranty...

 

Brand new battery, same issue. I think something is draining it.

 

I'm back from vacation and my xc60 starts right away. I'm glad that I didn't have to disconnect the battery.

 

Mother-in-law's 2010 XC60 T6, 23k miles.
New battery in July 2012, dealer said bad cell caused the drain and failure to start.
Happened again in November 2012.
Battery down to 4V.
Trickle charge overnight to 12V. Started, drove to dealer.

Diagnosis: drain on battery caused by satellite-capable radio control module.
(Note - satellite radio subscription not activated)
Repair: installed software update "31282067-3 RDAR Upgrade"

Let's see...