Thoughts? - battery. alternator or other problem?
I have a 2005 SRT-6 - one of the "new" old SRTs - bought 8 mos ago with 98 miles on odometer. The last couple weeks I noticed the car started turning over slower and slower until the battery went dead. I don't drive it much - 3K miles on the last 8mos. I have a battery charger, charged the battery and car is fine again - except as time goes on, car turns over slower and slower until dead battery. Checked the battery and it is sufficiently hydrated. Any thoughts? I am thinking alternator or other charging issue. I noticed some on the forum have had "Relay Control Module" replaced and there was some talk about a Mercedes recall for battery and alternator issues. I have double and triple checked all lights - hatch area, glove box and switched off the dome lights etc...nothing is on and I have not done anything or installed anything differently than the first 6 mos of ownership.