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Old 02-15-2014, 03:33 PM   #1
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BudtheDiplomat's Avatar
Monaco Owners Club
Join Date: Mar 2008
Location: Houston, Texas
Posts: 434
EchoCharger with AGM and Standard batteries

Has anyone successfully used an EchoCharger with InterState 6v standard lead acid (GC2-XHD) batteries with InterState Optima AGM batteries(SC31DS)?

Last June I bought the above batteries for a 2008 Monaco Diplomat, plugged in the EchoCharger and on a trip noticed a lot of outgassing with white corrosion all over and through the battery case. When parked, I had rust colored and white staining on the ground beneath the battery compartment, but voltage checks showed that all batteries were charged to their proper volts.

I cleaned everything thoroughly and kept noticing a lot of wetness on the outside of all of the 6v batteries.

Within two months on 110v shore power in storage, all of the batteries were completely dead and the motorhome tripped the GFCI circuit on the shore power.

As of now, I've replaced all of the batteries with GC2-XHD 6v for the house and 31-XHD for the chassis. I've removed the EchoCharger, charged the batteries through the GenSet and engine alternator, and am using the battery disconnect switches for storage.

Any better ideas?

US Army Major, Retired
'08 Monaco Diplomat SFT,
'11 Z-71 4X4 toad
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Old 02-15-2014, 04:39 PM   #2
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Damon Owners Club
Workhorse Chassis Owner
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Ensure the AGM Glass Mats are kept separate and not connected to regular wet and regular sealed batteries.
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Old 02-15-2014, 06:37 PM   #3
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Join Date: Jun 2012
Location: Merritt Island, FL
Posts: 1,742
The echo charger is used to charge the chassis batteries while on shore power in most motorhomes. They shouldn't affect your 6volt house batteries at all.
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