alternator to second battery wiring ???
I am running 2 batteries in my jeep, one for engine and starter, and the other for accessories and such.
the one battery is in my engine compartment. the other is mounted in in the back of the jeep.
I was just wondering can i just get a wire and run it from the alternator to this battery as well to keep it charged? or will that fry my alternator?
I dont exactly need dual batteries yet, as far as hooking them together... i just want one i can use and wear down and not have to worry about starting the car after the fact.
but what i would like is to be able to charge both batteries while the engine is running.
how can i wire this up without having to 2 physically connected.
Re: alternator to second battery wiring ???
[img]images/graemlins/smile.gif[/img] I posed your question to my moonguy-in-charge of electrical issues and here is his response: "THE RULE that governs situations like this is simple; never hook anything to a battery that won't take full battery amperage." [img]images/graemlins/smirk.gif[/img]
When I asked him to elaborate on that rule he just popped another Bud Light and gave me a kind of smirk [img]images/graemlins/smirk.gif[/img] and told me to FIGURE IT OUT [img]images/graemlins/grin.gif[/img] After thinking about it, it occurred to me that what he was saying was that your small charging wire would be at risk of meltdown if it should happen to be used to transport battery current BACK to the electrical system. If you did set up something like that, you would want to install a circuit breaker in the line so the battery couldn't fry the wire. It would actually make more sense to mount a nice copper bar up front that hooked to the battery via a welding cable and then drop off that with the circuit breaker that goes to the alternator. [img]images/graemlins/tongue.gif[/img] Why not just set up the second battery in the normal Jeepguy BBS fashion with the isolating solenoid and an oil pressure switch with the push-button emergency over ride. All you do is run the bigger cable to the rear location. That way everything is cool and you only have to do it one time. Some of the pickup manufacturers used to offer this setup as a option back in the days when our business band 2-Way radios pulled gobs of current and it wasn't a bit uncommon to transmit yourself right out of a ride home if you sat there too long using the radio without the engine running. [img]images/graemlins/crazy.gif[/img]
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