Is a Yuasa Battery tender ok for a GEL battery? - BMW Luxury Touring Community
 
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post #1 of 10 Old Nov 23rd, 2007, 5:23 pm Thread Starter
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Is a Yuasa Battery tender ok for a GEL battery?

My 2007 k1200GT has a gel battery (it is the stock battery). I have a Battery Tender (actually it is a Yuasa Automatic 12V 900 mA Battery Charger), but did not know if it would work on the Gel battery. Does anyone know for sure?

Jack Homesley
Cornelius, NC USA
'06 Goldwing - "The Black Pearl"
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post #2 of 10 Old Nov 23rd, 2007, 5:58 pm
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Yuasa make about the best gel batteries in the world, and their charger is designed to float charge/maintain them.. You won't have any problems leaving it connected for extended periods of time. Check THIS out.

  • 2005 LT - 17 countries, 2 CONTINENTS & counting !
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post #3 of 10 Old Nov 23rd, 2007, 7:05 pm Thread Starter
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I looked through the Yuasa file you listed, but didn't find anything specified as a "GEL" battery by Yuasa. Is their "sealed VRLA" battery the equivalent of a "gel" battery?

Jack Homesley
Cornelius, NC USA
'06 Goldwing - "The Black Pearl"
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post #4 of 10 Old Nov 24th, 2007, 9:01 am
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Quote:
Originally Posted by cccpastorjack
I looked through the Yuasa file you listed, but didn't find anything specified as a "GEL" battery by Yuasa. Is their "sealed VRLA" battery the equivalent of a "gel" battery?
Jack,
This Wiki entry may answer your question & concerns.

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post #5 of 10 Old Nov 24th, 2007, 10:19 am Thread Starter
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Thanks guys! Twenty five years ago I ran a bike shop, but a LOT of things have changed since then...a LOT!!!!

Jack Homesley
Cornelius, NC USA
'06 Goldwing - "The Black Pearl"
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post #6 of 10 Old Nov 24th, 2007, 10:51 am
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Jack, if you use the Yuasa charger, do not use the accesory port to charge the bike, as the canbus system will only recognize the specific BMW charger made for Canbus. The best way is to directly wire the charger to the battery or install another port that goes direct to the battery. There are several companies that make a specific harness including an additional socket that can be installed next to the OEM socket for the GT.
I installed one on my 06. It took a little snaking to get the wire from the battery down to the lower part of the bike.

Larry
2009 Deep Blue K1300GT
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post #7 of 10 Old Nov 24th, 2007, 11:28 am
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great artical!

I have had a question for a while though and didn't really see a straight answer to it, but maybe an answer....

When storing a battery, it said you should put a charger on it every month, or even every two weeks. What about a float charger? Can you just leave it on the battery full time? Doesn't mention that as an option.

If putting a charger on every two weeks is the key, would that be the float charger on every two weeks?

Why doesn't someone have a real storage system that monitors the condition of the stored battery and the automatically turns on every two weeks for a period of time then, shuts off?

I looked for a timer that would go one every two weeks for say 8 hours, but couldn't find one. I use one now that turns on every week for 6 hours and trickle float charges my 10 stored batteries and then shuts off. The best I could come up with so far. Anybody have other more improved ideas?

Maybe I am looking at this wrong, but it appears the only way battery manufacturers have to proberly maintain stored batteries is to manually monitor them and charge them when they go low. That has caused low battery life for me so far, with either not catching them or over charging them. At least that is what I have attributed it to. My wet cell batteries, especially in my PWCs only last a year or two. I have switched to AGM, so we will see how they do.

I also just started the 6 hour every week gig this year too!

ld
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post #8 of 10 Old Nov 24th, 2007, 12:28 pm
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I have used one of these
for the past 16 months and keep it plugged in when ever I'm not riding. Bought it at my local BMW dealer for ~$49. Google it for other retail sources. CTEK US 800 Battery Charger

BTW . . . no commercial/economic interest in this device.
Features and Benefits

* Three step, fully automatic switch mode model
* Charges lead-acid batteries (Wet, MF, Gel and AGM) from 1.2Ah to 32Ah, 1.2-100Ah maintenance charging
* Maintenance pulse charging increases battery life and gives superb performance
* Charges even drained batteries
* Pulse recover of slightly sulphated batteries
* Low back current drain, low ripple and input voltage independent (85-125V)
* High efficiency: 85%
* Delivered with two interchangeable connection leads, one with clamps, and one with eyelet terminals
* The charger can be connected for months, ideal for seasonal vehicles
* Compact design with mounting holes for permanent assembly
* 2 year warranty

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post #9 of 10 Old Nov 25th, 2007, 12:44 pm
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I drive in and plug it in.

Battery Tender® recommends keeping their chargers attached and "on" whenever the vehicle is not in use. Battery Tenders are cheaper than batteries, so I keep one attached to each vehicle I own when not in use, including my lawn tractor and car. Don't make me show pictures.

I personally knew a guy that would keep his charger attached to his Harley 24/7 and the battery lasted twelve years. That's one hell-of-a return. . .

"There's a unique connection between batteries and trickle-charges."

OneShot
'06 OCEAN BLUE K1200 LT
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post #10 of 10 Old Nov 25th, 2007, 8:38 pm
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THIS WAS IN THE BMWMOA ON NOT TO LONG AGO....

I know this is a little long but I just asked Deltran the question about BMW gel batterys and this was the reply:

The following is a message from the company president.

I will try to end the confusion about the new BMW Gel battery Battery
Tender.

The BMW Gel Battery Tender is in fact different than the normal Battery
Tender Plus. Although the Deltran Battery Tender Plus and the BMW Battery
Tender appear the same they are quite different. Approximately one year ago
BMW contacted us concerning their new Gel battery that is manufactured by
Exide battery in Germany. We were instructed to redesign the charge
algorithm to comply specifically with the new Exide Gel battery. Exide
recommended very specific changes to the charge curve, one being a timed
sequence during the absorption period. Please keep in mind that our
engineering staff has been designing charge curves for over fourteen years
and prior to this design request had never seen anything quite like the new
Exide Gel.

As the old saying goes, "the customer always knows best," we can only
do
as requested. If BWM/Exide says charge it to their instructions and the
battery will last through the warranty period who are we to argue. If it is
any consolation, we have found it to be a very good battery and should give
you many years of service.

We do claim per our packaging that we correctly charge gel batteries,
prior to seeing the Exide battery that statement was true, we are now
changing our packaging to indicate otherwise. Due to the new battery design,
and to comply with the BMW warranty, the customer must purchase a "Gel
Specific" battery charger.

After all these years in the charger business we are still amazed how
every manufacture try's to re-invent the battery. We realize that with all
the different batteries in the market place the customer becomes very
confused and is usually forced to spend more money. Approximately three
years ago Harley-Davidson changed their battery design and manufacturer, it
proved to be a very wise decision and we can only hope it works out best for
BMW, and most importantly, you the customer.

Sorry for the Confusion,
Mike Prelec
President,
Deltran Corp.
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