National Lunar Dual Battery Controller with three batteries

[TotalOverland]

Hi,

I have the National Lunar Dual Battery Controller http://www.nationalluna.com/dualmon.htm to use with my Odyssey Extreme batteries.

It seems a shame to get rid of the standard battery currently in the vehicle, and there is space for all three to fit next to each other.

Therefore, is there any reason why i couldn't connect the two Odyssey batteries in parallel to treat them as one auxiliary battery, with the existing battery being kept for general cranking use etc?

There will be a basic 100W solar panel (with regulator) helping out the charging of the leisure batteries, but will the National Lunar unit accept having a standard vehicle battery as the 'Main' battery and the two Odyssey's treated as a single 'auxiliary' battery?

Richard

 

[4x4junkie]

Two identical batteries wired parallel is effectively one large battery, so I see no reason for it not to work.
Just be sure when you make your connections to the two parallel batteries (usually called a battery 'bank'), make your connections at the + of one battery, the - at the other. This will promote equal power sharing between the two batteries during high charge/discharge currents.

 

[TotalOverland]

Ah thanks, nice tip and not something I had thought of.