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Old 07-26-2010
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1- Combine the neg sides AFTER the shunt at a negative BUSS bar. On the battery post side of the shunt there should be NO ground wires of any sort, not even a bilge pump. The jumper from the batt post to the "in" side of the shunt should be the ONLY wire between the shunt and battery post. The neg BUSS is then grounded to the vessels common ground point, usually your engine block.

2- Move the alt output to the house bank with the batt charger. The Echo Charger is not a bi-directional unit and only flows ONE way, FROM the house bank to the reserve/start bank.

3- Install the Echo Charger feeding the start battery FROM the house bank..

4- Do not use the "COMBINE/BOTH" feature when you are in an emergency situation especially with AGM batteries!! If you kill a bank SWITCH to the known good bank. Combining them only forces the good battery to drain into the bad one thus sucking BOTH batteries down to an over all lower state of charge and potentially not leaving enough MCA for the engine. AGM's can charge and discharge at VERY high rates...
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Last edited by Maine Sail; 07-26-2010 at 12:13 PM.
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