Mams Mams could be a bad battery but I doubt it since your vehicle is really not that old. The Volvo S60 alternator is not the most efficient so you may want to drive your vehicle for a few days with higher revs (1500 rpm or more) and see if that eliminates the warning sign. Your dealer, or any local garage, can check your battery to see if it is the issue and check your charging system to ensure your battery gets charged. The only other thing I would suggest is that you check with your dealer about a software update. There was a TSB for Volvos about excessive battery drain (possibly satellite receiver) which was fixed by Software Control Module update.