dual Batteries

[ksurfer2]

I have a couple questions about dual batteries when wired in parallel. First, when hooking up to a battery tender, would the leads go from the positive of one battery to the negative of the other? In case I ever need to jump start the car, same question...are the cables hooked up positive on one battery and negative on the other?

If yes, to both, I will need to make some longer wires for my battery tender to reach between the two batteries and keep a set of jumper cables with me that have the two leads split much farther to reach.

 

[Kern Dog]

Seems to me you'd just connect the clips to one battery and if the two batteries are connected, they usually equalize the voltage between them.
This is the case when I have to charge an AGM battery. I have to run jumper cables to a conventional type battery and charge it instead of the AGM directly.

 

[ksurfer2]

Seems to me you'd just connect the clips to one battery and if the two batteries are connected, they usually equalize the voltage between them.
This is the case when I have to charge an AGM battery. I have to run jumper cables to a conventional type battery and charge it instead of the AGM directly.

would that be the same for jump starting?

 

[MiradaMegaCab]

Yes, same for jump starting.

May I ask, why are you running two batteries?

 

[ksurfer2]

Yes, same for jump starting.

May I ask, why are you running two batteries?

This car is new to me and how it was set up when I purchased it. It is a street/strip car that used to be just a race car.