OK now that video on battery -vs- alternator leaves me a bit confused. It says if after you jump it you can drive it around for awhile it is not the alternator. But if if all the cluster lights go on its the alternator not the battery. Well sometimes I can drive the car for days after a jump but som...

I have a 1996 Volvo 850 turbo. To start things off the battery in the car is only 2 years old. When I first got the car it ran fine now for some reason the car dies here and there, basically when it wants to. When this happens I notice if I get a jump from a car or a velichle with a small engine the...