Should I charge Chevy S10 battery at 6 or 12 volt setting?

[elb]

My Chevy S10 pick-up battery is really low and a jump is not convenient since the truck is out is a field. I have a battery charger with 6 volt and 12 volt options to do a trickle charge at 1 amp for 24 hours. Which setting is right for the batter? Alternately, any web site come to mind with good details on old car/ truck parts that would tell me about the standard battery on this thing?

[housefly]

definetaly 12 volt. all most all cars now are 12 volt systems. If you really have questions fo to ask.com or call your local auto parts store they can answer all you questions on cars and accesories