Mean Green alternator with NL Dual Batt kit?

[DBS311]

For those of you running the National Luna Dual Battery set up, are you also running your stock alternator?

I have the Mean Green 140 amp alternator for my 3FE and don't know if this will cause a problem with the NL kit. The solenoid is recommended for 85 amp continuous and 400 amp max, and I'm just hoping there won't be a problem.

Somebody with bo staff skills, computer hacking skills, or alternator/dual batt skills would be greatly appreciated.

[DBS311]

Gotta thank Paul @ Equipt1 for getting the answer for me!

[shawkins]

What is the answer? I'm upgrading my alternator and was considering the NL kit.

[euclid]

This answer would be helpfull to me too. I've got to decide on stock or Mean Grean for my 3FE, and I'm considering the National Luna system.

[DBS311]

Sorry, haven't checked this thread in a while. I'll dig up the answer from NL and post it.

[DBS311]

Ok, here's the info straight from National Luna.

The answer to your answer is simply this :
It doesn't matter how much amperage you have available. A battery will
take what it wants, you cannot give current. That is a simple but
crucial electrical law. Generally, a lead-acid battery will not take
more that 25% of it's rated capacity in amps. This is not always the
rule but most of the time this is true. ie- a 100Ah battery will demand
only 25Amps for the bulk of it's charge. It might peak when charging
first starts, but it will drop off.
As always there are exceptions - you might expect slightly higher charge
currents with AGM batteries or advanced gel batteries.
The solenoid is capable of handling more current than that alternator
can deliver - trust me !
I would however rather use a 100A fuse in place of the 50A one. In hot
ambient temperatures, this might blow unexpectedly.
I hope this has answered your question sufficiently.
Kind regards
Steven lambert
National Luna

[cruiseroutfit]

Good to know, thanks for the update! :cool:

[RMP&O]

bump because it took me a while to find this thread and I needed to know the answer too! :)

[Harald Hansen]

I tagged it (see below) for easier reference. If we tag useful threads, the forum becomes a better resource. And tagging only takes a couple of seconds.