AGM battery - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 23 (permalink) Old 12-15-2007, 02:27 AM Thread Starter
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AGM battery

If you don't have one, get one. I put a Sears DieHard AGM battery in my bike today and it is worth every cent spent. 40 degrees outside, road in the rain, sat out in the wet cold, 2 hours later touched the starter and it fired right up. The engine felt smoother at interstate speeds too.
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post #2 of 23 (permalink) Old 12-15-2007, 10:46 AM
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And DON'T get the batteries plus one....


I was impressed a year ago - but it's failing (bought it feb) at low temperatures - but they won't replace it because when it's warm it puts out factory CCA specs...

Curtis - Albany Oregon.
Currently receiving therapy from "Doc" - My 1985 VN700.

Daily rider in NorthWET Oregon.
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Bought Feb 2007 with 12K miles.
Hit the 24k mile July 2008

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post #3 of 23 (permalink) Old 12-15-2007, 12:23 PM
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Quote:
Originally Posted by dirtrack650 View Post
If you don't have one, get one. I put a Sears DieHard AGM battery in my bike today and it is worth every cent spent. 40 degrees outside, road in the rain, sat out in the wet cold, 2 hours later touched the starter and it fired right up. The engine felt smoother at interstate speeds too.
And there it is...We have been telling new members this since Day One...
"First thing to do for your Vulcan is get an AGM M-F battery... "

Some just don't want to believe it makes a diffrence....until they get one.

Alot of new bikes now come with them as standard equipment, am guessing that because the specs of the Vulcan are a bit "old" they just continued to use the orginal specified battery in manufacture.

My bike sat for 4 weeks without being put on a charger, and in 30 degree weather fired right up too...

KM

If You Are Not Sure If I Am Joking or Not....I AM !!Photos:
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post #4 of 23 (permalink) Old 12-15-2007, 01:50 PM
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Starts right up, charges faster and for some reason I don't understand (or may be it's imagined) the engine runs better....not to mention I don't have to worry about topping off the battery and the possibility of acid drips. Why wouldn't you invest in one??

-Tim
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post #5 of 23 (permalink) Old 12-17-2007, 12:15 AM Thread Starter
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I guess it's the higher amp output of the AGM battery that makes our coils happier = a smoother running engine and better combustion.

I bought SEARS because I got 7 years of service out of a DieHard lead acid. Hope this battery does the same or better.
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post #6 of 23 (permalink) Old 12-27-2007, 10:51 PM
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Agm

I'm all about the AGM battery. When I installed mine, I swore the hot start backfires disappeared.

It's good to be back on the forum!

Ben-
SW Ohio

'02 VN750
Pipes drilled
Spline lubed
R/R relocated
AGM batteried
Iridium equipped
LED tail lighted
8000-ish miled
Soon to be MCCTed

Lovin Life.
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post #7 of 23 (permalink) Old 01-03-2008, 07:51 PM
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ok, where's the best (cheapest) place to get one of these batteries. also how long will these batteries last?
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post #8 of 23 (permalink) Old 01-03-2008, 09:04 PM
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Talking AGM battery...

I swear by the Big Crank ETX15L Battery:
http://www.batterymart.com/p-Big-Cra...L-Battery.html

Read about the AGM battery technology here: http://www.vonwentzel.net/Battery/01.Type/index.html

A newer type of sealed battery uses "Absorbed Glass Mats", or AGM
between the plates. This is a very fine fiber Boron-Silicate glass
mat. These type of batteries have all the advantages of gelled, but
can take much more abuse. We sell the Concorde (and Lifeline, made by
Concorde) AGM batteries. These are also called "starved electrolyte",
as the mat is about 95% saturated rather than fully soaked. That also
means that they will not leak acid even if broken.

AGM batteries have several advantages over both gelled and flooded, at
about the same cost as gelled:
Since all the electrolyte (acid) is contained in the glass mats, they
cannot spill, even if broken. This also means that since they are
non-hazardous, the shipping costs are lower. In addition, since there
is no liquid to freeze and expand, they are practically immune from
freezing damage.

Nearly all AGM batteries are "recombinant" - what that means is that
the Oxygen and Hydrogen recombine INSIDE the battery. These use gas
phase transfer of oxygen to the negative plates to recombine them back
into water while charging and prevent the loss of water through
electrolysis. The recombining is typically 99+% efficient, so almost
no water is lost.

The charging voltages are the same as for any standard battery - no
need for any special adjustments or problems with incompatible
chargers or charge controls. And, since the internal resistance is
extremely low, there is almost no heating of the battery even under
heavy charge and discharge currents. The Concorde (and most AGM)
batteries have no charge or discharge current limits.

AGM's have a very low self-discharge - from 1% to 3% per month is
usual. This means that they can sit in storage for much longer periods
without charging than standard batteries. The Concorde batteries can
be almost fully recharged (95% or better) even after 30 days of being
totally discharged.

AGM's do not have any liquid to spill, and even under severe
overcharge conditions hydrogen emission is far below the 4% max
specified for aircraft and enclosed spaces. The plates in AGM's are
tightly packed and rigidly mounted, and will withstand shock and
vibration better than any standard battery.

Even with all the advantages listed above, there is still a place for
the standard flooded deep cycle battery. AGM's will cost 2 to 3 times
as much as flooded batteries of the same capacity. In many
installations, where the batteries are set in an area where you don't
have to worry about fumes or leakage, a standard or industrial deep
cycle is a better economic choice. AGM batteries main advantages are
no maintenance, completely sealed against fumes, Hydrogen, or leakage,
non-spilling even if they are broken, and can survive most freezes.
Not everyone needs these features.

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post #9 of 23 (permalink) Old 03-17-2008, 01:23 PM
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Quote:
Originally Posted by Hiker View Post
I swear by the Big Crank ETX15L Battery:
http://www.batterymart.com/p-Big-Cra...L-Battery.html

Read about the AGM battery technology here: http://www.vonwentzel.net/Battery/01.Type/index.html

A newer type of sealed battery uses "Absorbed Glass Mats", or AGM
between the plates. This is a very fine fiber Boron-Silicate glass
mat. These type of batteries have all the advantages of gelled, but
can take much more abuse. We sell the Concorde (and Lifeline, made by
Concorde) AGM batteries. These are also called "starved electrolyte",
as the mat is about 95% saturated rather than fully soaked. That also
means that they will not leak acid even if broken.

Thanks for the link and a price that can hardly be refused for AGM: $55. I called the company and was told that Deka made the batteries but they could not put that on the battery. hmmmm

Apparently the battery worked for you; is it still working ok?



thanks

Stone
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post #10 of 23 (permalink) Old 03-17-2008, 01:28 PM
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Does anyone know how long an AGM battery will actually last? I live in Tucson and this is the elephant graveyard for automotive batteries. Surely someone has worn one out by now.

I would rather replace mine before it fails than suffer the inconvenience of limping home one day.

Darrel
'03 Vulcan 750 (90k miles)
-Corbin Seat
-V-Force Windshield
-LeatherLyke Touring Bags
-Chrome Luggage Rack
-Headlight Modulator
-Brakelight Flasher
-MF Battery
-Heads-Up Voltage Monitor
-Replaced Stator (9,000 and 16,000 mi.)
-Oil-cooled Stator Mod (photos)
-Replaced and Relocated R/R
-Greased rear splines
-Fused Stator (photos)
-Metzeler ME880 Marathon 170/80-15 (Rear), 110/90-19 (Front)
-TOC MCCTs installed
-Headlight Relays
SOLD - 2013
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