[C320-list] 4D Battery Replacement Advice AGMs

[Richard A. Walker]

I am not so sure Dave.  Note this from Xantrex about their product.  I have
the Truecharge 20 on Windwalker and it has been great the past 6 years.
Never frys the batteries like the OEM charger and allows mw to charge by 2
4D's and the G-27 starter battery independantally.  Note the table for
charging voltages below:

Description


High Performance, Multistage Charging

Truecharge multistage battery chargers are microprocessor controlled for
fast and accurate charging of all deep-cycle 'house' batteries. A wide AC
input voltage range enables proper delivery of a full three-stage charge,
even when charging from less than perfect quality shorepower or generator
power. Smart features, such as adjustable temperature compensation and
independent settings prevent battery damage due to overcharging and also
help extend the life of expensive batteries. All Truecharge battery chargers
come with a one year warranty.

Truecharge 20+/40+

20 and 40 amp output 
Microprocessor controlled, multistage charging  
Charges up to three battery banks simultaneously 
Independent settings for AGM, flooded or gel lead-acid batteries 
Wide voltage range operation (90-135 VAC, 50/60 Hz) 
Automatic 21-day top-up program 
Durable and corrosion resistant chassis 
Optional remote LED panel to indicate battery and charge status 
Optional battery temperature sensor

Absorption voltage Hot Warm Cold
Flooded 14.0 14.4 14.8 VDC
Gel 13.8 14.2 14.6 VDC
AGM 14.0 14.3 14.6 VDC
Float voltage at no load Hot Warm Cold
Flooded 13.1 13.5 13.9 VDC
Gel 13.4 13.8 14.2 VDC
AGM 13.1 13.4 13.7 VDC

Cheers,
 
Dick Walker
C-320 (687) WindWalker II
740 Olive Ave.
Coronado, CA 92118-2136
619.435.8986

-----Original Message-----
From: C320-List-bounces at catalina320.com
[mailto:C320-List-bounces at catalina320.com] On Behalf Of Dave Leon
Sent: Monday, January 09, 2006 1:57 PM
To: C320-List at catalina320.com
Subject: RE: [C320-list] 4D Battery Replacement Advice AGMs

Joseph,

I have AGM batteries on my 320.  Thay use the same charging setings as a wet

cell.

Dave Leon


>From: Joseph A Tamucci <jtamucci at adelphia.net>
>Reply-To: C320-List <C320-List at catalina320.com>
>To: C320-List at catalina320.com
>Subject: [C320-list] 4D Battery Replacement Advice AGMs  Date: Mon, 09 Jan 
>2006 15:56:50 -0500
>
>Thanks everyone for the responses.  From what I've read so far I think
>there is confusion between AGM (Absorbed Glass Mat) and Gel cells I'm
>considering.  According to the literature I've read on batteries, the AGMs
>are technically wet cells like the standard 4D lead acid but have the
>electrolyte absorbed in a mesh of boron-silicate glass fibers. As such they
>are true no maintenance batteries. They can be charged with conventional
>chargers without fear of damage from overcharging. They are advertised as
>having the same charge characteristics as the lead acids but are more
>rugged, discharge at a much lower rate, and will not suffer from freeze
>damage.  The only downside I have read is that they cost twice as much as
>the standard lead acid.  Since I leave the batteries on the boat all winter
>in NE that's the big selling point to me.  At 140+ lbs each I'll pay the
>extra $300 to leave the batteries on the boat for the 6 mths winter storage
>(don't you southern boys laugh now) without being able to recharge during
>that time.  I'm also expecting they will last longer although I'm not sure
>that has been proven. I also won't have to remove the seat cushions to
>periodically check the water level.
>
>
>Joe Tamucci #619
>
>
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