dual battery help

[qukon 95]

as long as the alt is charging it will charge both batteries there won't be a problem with 2 diff batts that's why you need the PAC200 HIGH current
relay.

 

[greasemonkey2014]

Or get a lithium ion car battery most have a built in reserve press the button on the battery and start your truck. The only problem is that they are pricy


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[Justjoshiny]

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This is correct to run the setup you would like. You will need a 100% duty solenoid. This is really a simple setup and this is the simplist way to do it IMO, but I would run the positive to the switch off the second battery so In case your first battery is 100% dead, you can still power the solenoid. Using deep cycle batteries would be much better for not killing the batteries with constant charging/discharging

 

[TylerZ281500]

so it seems like solenoid way if im running different batterys is my best bet in general, so pac200 or cole hersee 24117 i should be using?

 

[great white]

as long as the alt is charging it will charge both batteries there won't be a problem with 2 diff batts that's why you need the PAC200 HIGH current
relay.

No, that is incorrect.

 

[addiction2bass]

the factory wiring on a 99 police tahoe just runs them in parallel. with seperate grounds. i know because i took the wiring off a police tahoe last month BUT it uses a fuse between the batteries. just like all the stock 140amp alternator trucks they have a fuse block screwed onto the fan shroud, but the police tahoe has two fuse blocks. one for alternator and the other runs to the second battery.

 

[TylerZ281500]

do you get alot of those police tahoes in the yard? and how much did you pick all the wiring up for?

 

[addiction2bass]

do you get alot of those police tahoes in the yard? and how much did you pick all the wiring up for?

I wish they got more of them! Lol those gauge clusters make bank! Lol
I think I I paid like 15bucks for it because I got the ground with everything even the fuse block part. I want to replace my ugly looking 0gauge wire I have now.

 

[TylerZ281500]

let me know if you come across some more.

 

[addiction2bass]

well theres nothing super special about it. it just has a side post battery connection where the second battery is going to be. you could simply use a aftermarket side post terminal and enough wire to the length from that battery to the fuse box. and the ground just ground it to the ac bracket. very simple!