cat320
Charter Member
I was just thinking of this and never had to but what if you had to jump a piece of equipment that was 24 volt in the field and all you had was your truck and cables. 12 volt to 24 volt does not mix.
:waving I have, but only a hundred times or so.Be interesting to see if anyone has actually had to do this.
...that would tricky for someone who doesn't fully understand series-parallel wiring.
Dwan Hall said:DO NOT USE 2 sets of cables to jump both batteries at once as this will short out both of the batteries in the 24 volt system. this could cause the batteries to explode
unless you use 2 different source systems which have no comon connections.
DO NOT USE 2 sets of cables to jump both batteries at once as this will short out both of the batteries in the 24 volt system. this could cause the batteries to explode
unless you use 2 different source systems which have no comon connections.
I started hauling around a small El Cheapo battery from Wally World and a battery cable that's about 2' long with terminals on it. I can set it on the grill guard of my pickup and slap the cable on from the positive of the mounted battery to the negative of my mobile battery. Then I can use jumper cables to go from the negative of the mounted battery and the positive from the mobile battery to get 24V. My pickup uses the side mounted posts for its system so the top mounted posts are free to use.
Maybe I'm not thinking it out right?
It would be feeding 24v into your truck is what I was thinking.
If I don't have 24volt source I always hook up to pick up or whatever, as long as you hook up to 1 battery like you would another 12 volt system it's 12 volts I've done many time's but your best to do this to charge batteries one at a time and then try to start machine. That's what I always tell people when charging batteries with a welder disconnect welder before starting, and if your dealing with newer machine with a Ecm doesn't hurt to take battery cables off while charging :IMOI see what you were thinking, but no it's the same as hooking up a 12V jump. Even though one's a negative post and one's a positive post on their respective batteries, both of the terminals become 12V positive in a 24V system. In the 24V series systems on equipment that I'm used to, you have one ground terminal, two 12V positive terminals, and one 24V terminal which goes to the starter.
There's no comparison in jumping it 24V versus 12V, saves a lot of cussing for me not to mention that low voltage will fry a starter over time. I have it on my to do list to mount another battery under my hood that is already hooked up instead of hauling it around.
Works fine if you know what your doing, your dead cell comment...to add to that also do not charge a cold battery with welder it will explode. And not good idea to leave welder connected while trying to start machine.You can charge or jump a 12 or 24 with a portable dc welding machine
you just need to know how to do it and have a suitable machine
don't use this technique if you have a dead cell
your thoughts on this?