John, Whether they have been in warm weather the last 5 years really doesn't matter. At 7-8 years of age they are at the end of their useful life and should be replaced to assure continued reliability. Just my opinion after working many years in the battery business. Bob J From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On Behalf Of JD Sent: Tuesday, July 27, 2010 11:30 AM To: Chrysler300@xxxxxxxxxxxxxxx Subject: [Chrysler300] battery Q? Almost 300 related (since many of us use our Rams to pull our 300s) Q for the mechanics out there: On an '03 Ram Cummins with dual batteries, mine just started making a hesitation starting. Are both batteries used to crank the engine? Can you replace one or I'm guessing both? They are 7-8 years old now; been in warm whether the last 5 years. Thanks, JD ------------- John Dokos jd195@xxxxxxxxxxx <mailto:jd195%40verizon.net> (512) 639-5190 [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] ------------------------------------ To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Chrysler300/join (Yahoo! ID required) <*> To change settings via email: Chrysler300-digest@xxxxxxxxxxxxxxx Chrysler300-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/