The Tundra was left stranded at work yesterday. It made a trip from Richmond, VA to DC on Saturday with a lot of stop-n-go on I-95 during the return trip. It did notice it turned over a little weak on one stop when I got back to town. I didn't drive it on Sunday. Monday morning the start was noticeably weaker, but it did start. Yesterday after work it wouldn't turn-over at all; just the clicking sound of the starter. The battery is 6-yrs old. Does this sound like the battery or sound like the alt died and stopped charging? Would hate to buy a new battery if I got a year or two left in this one, or kill a new one with a bad alt. Haven't found a ride in yet to check things out with tools at hand.