What's new
Van's Air Force

Don't miss anything! Register now for full access to the definitive RV support community.

Battery Isolator

I have used one in a marine environment but not aviation. I do not see a downside for you other than weight.
Gotta ask, two batteries in a RV-4?
 
Last edited:
two batteries

Yep, two batteries. It actually turned out that I needed more weight behind the passenger seat for the w&b to work out right since I have a cs 3 blade and IO360 and inverted oil. I have two PC625 mounted there. I have one to run the efis, eis and other radios and ecu. That way I can turn on all that stuff and crank the engine on the other battery without the brownout normally associated with one battery.
 
Interesting

Good info..I run 2 batteries in my RV-4, one is currently just charged by wall charger and is backup only for my essential stuff. I am running an 0-320H2AD with dual electric fuel pumps and no mechanical. No volts means no fuel. The little FACET pumps are just as reliable as a mechanical, and use very little voltage, but I would like to be able to charge both batteries from the alternator easily.
 
I am planning to install EFII's Bus Manager. It will charge two batteries with one alternator and give me the option of starting from either battery or both.
 
if you are running a small backup battery for the efis and pumps a simple shottky diode setup will do the trick.


just curious, with dual batteries and that what kind of useful load do you have?

bob burns
RV-4 N82RB
 
rv4dude17 said:
Has anyone had any experience using a battery isolator like this http://www.waytekwire.com/item/80046/SURE-POWER-702-MULTI-BATTERY/ with two batteries and one alternator?

This is the only way that I can see to keep two separate electrical systems without having two alternators.
Click to expand...

Used Perfect Switch isolators for split charge on my boats. Far better than the old marine-style isolators and if memory serves, they supply for military and air applications. Not cheap but super-reliable and super efficient.
 
You must log in or register to reply here.
Back
Top