Archived jump start

[dragan54]

I am a newbie so please be gentle. I am hot sure what I left running in my truck, but went out this mournib and both batterys are dead. MY question is there a cetioan order to charger the batteries and or do a jump start. When doing a jump start to both batteries have to be on the cables



Thanks

 

[Smokn Bio]

Jump start it like you would any other car the batt are hooked together so you hook one and they are both hooked. it will take longer to jump start than any car and try to use the best jumper cable you can. if the truck doesnt turn over as fast as normal stop and let it charge untill it does youdon't want to buy a $250 starter.

 

[ttbird]

If they are totally dead you might want to charge them separately first. But you can also use jumper cables hooked up to only one of the batteries because they are in series anyways. You will probably have to let them charge for about ten minutes before they will come up enough to start your truck. Then go for a drive. By the way use good jumper cables or you will be there awhile. GOOD LUCK... Nothing wrong with asking!!!!!

 

[BigPapa]

Most of the new automatic chargers will not start charging if the battery is putting out less than 9 volts. Just an FYI.



Scott

 

[EKlem]

If they are totally dead you might want to charge them separately first. But you can also use jumper cables hooked up to only one of the batteries because they are in series anyways. You will probably have to let them charge for about ten minutes before they will come up enough to start your truck. Then go for a drive. By the way use good jumper cables or you will be there awhile. GOOD LUCK... Nothing wrong with asking!!!!!

I am pretty sure that the batteries are hooked up in parallel, at least mine are. If you hook up to one battery, it will charge them both. One of my friends here at school has a 24V that has gotten completely dead batteries a couple of times and after hooking up to him with jumper cables from my truck and waiting 15 minutes, it has always started right up. Don't be alarmed if you need leave the jump hooked up for a long time to get your batteries charged enough(the other car's alternator will be charging your batteries) Good luck getting her running again.

 

[2-ND TIME]

jump starting

Yes they are in parallel this doubles the current available @ 12 volts. When jumpering them this is the safest way . I have seen, but not envolved with 3 batteries explode and I don't want anyone here to have this happen to them.

Red + = positive

Black - = negitive



1. Put one positive lead on the jacketing of the ground lead.

2. Put one positive lead ( to positive on battery) to the jumpered vehicle and the ground lead to a lifting hook or similar ( this is to stop arcing of hydrogen gas around a battery).

3. Put the positive lead to the good battery.

4. Put the negitive lead to a similar grounding spot of metal. THIS IS THE SPOT THAT ONE WILL HAVE AN ARC. I personally have seen paint stop electrical connection at this point, so rub any paint, rust off.

5. Let it charge long enough to provide the the batteries some current it may take some time. ( Not long enough if it dies when you disconnect the batteries.



6. Disconnecting paralleled Batteries: Take the ground off first, then the positive lead and hold them apart ( best done with two people ). Do same on other end.

 

[Joe G.]

I've jump started my '95 using our car. Batteries dead too because of a blunder by yours truely. As long as the car is running it has enough to start the truck.

 

[dragan54]

Thank you one and all for yor valuable suggestions and it started up right up following your directions

 

[ttbird]

I am brain dead. They are in parallel. Sorry for the bad info. Knew what I wanted to say but didn't say it correctly. Thanks guys for correcting me.

 

[CstlEng]

I've jump started my '95 using our car. Batteries dead too because of a blunder by yours truely. As long as the car is running it has enough to start the truck.

"As long as the car is running it has enough to start the truck. "



Usually... but if it is cold (atmosphere and engine), or the batts in the truck are really dead, or at the end of their usable life, or if the car has a real small batt and or small alternator, it could take a longer time (a much longer time) to get to the point the heaters can cycle fully and the truck cranks over.



The combined capacity of the trucks batteries is a couple hundred amp hours. On cold days, there is not a tremendous amount of reserve capacity (over starting requirements) in the trucks batteries. A car alternator can have a capacity of 70 amps, of which a portion is used to keep the car running. So 60 amps left from the car alternator to charge the truck could have you waiting 3 or more hours to get near a full charge. Even if you include the cars possible 75 amp hour battery, you could be needing to wait a while in some circumstances for the truck to charge before you are good to go...



glad you are running

 

[Joe G.]

In this particular case the car alternator is 110 amps (Chrysler LHS). My truck starts almost instantly so there is not much cranking involved. The batteries were flat because I had left the transfer pump on my bed tank on. I didn't attempt to charge them. Just hook up and crank. I suspect that in most cases that will work. Of course, if it's below zero and the car does not have the battery or alternator capacity there will be problems.

 

[CstlEng]

JoeG,

My only point was that just hooking up a car and cranking will not work in all circumstances. And just because it does not work in another circumstance than you observed/described does not necessarily mean a larger problem with the truck. Was not trying to be a PIA, just attempting to prevent someone arriving at a wrong diagnosis somewhere down the road. I am glad our fellow member is back on the road.

 

[J.BURCHFIELD]

When I give a jump I shut off my truck to protect my altenator. Usually any vehicle with only one battery will start right away with the power of my two batteries. A defect in the electrical system of the vehicle receiving the jump could do damage to your altenator.