What is going on here?
I am having a confounding battery
problem: I have a 2005 Hunter
36, with a ProTech4, model 1230, "Advanced, Four-Step, Battery
Charger/Power Supply," output 12V, 30amp; a Yanmar 3YM30 diesel
with factory alternator
; and a Honda
2000i Companion portable generator
into one of my two, 30amp shore power
I recently added one Deka 8D AGM
, to use as my House battery bank, and ganged my existing two Group 27 lead acid batteries to be my Starter/Emergency bank.
When I am running my engine
, all batteries become fully charged. However, when I am plugged into shore power
, or my portable generator
, only my Starter/Emergency (2-group 27 Lead Acid) bank is being fully charged. My House 8D AGM
, is not. What is happening here, and how can I fix the problem?
I have spoken to ProTech, and they say I should not be having this problem.
Here is one more piece of information: When I SELECT the 8D AGM to use as my House battery, while plugged into shore, or generator, the voltage will eventually drop precipitously down to ~ 0, at a point of use, while the DESELECTED 2-Group 27 lead acid batteries are being fully charged. However, when I SELECT the 2-Group 27 lead acid batteries are SELECTED as my House, the voltage in my DESELECTED Deka 8D AGM battery appears to be charged back to ~11 Volts, but not fully to 12 Volts.
What is wrong here? Thanks!