Sealed Battery charge - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 18 (permalink) Old 12-27-2006, 09:14 AM Thread Starter
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Sealed Battery charge

Probably a stupid question, but what the heck?

Recently installed a sealed battery in my 01 750. I have a battery tender that I used last winter on my regular battery. Any problems hooking it up to the new one during down times? I ride year round but there are times when the bike may sit for two or three weeks between snows.
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post #2 of 18 (permalink) Old 12-27-2006, 09:28 AM
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You can check the battery manufacturers website for charging recommendations to be sure, then compare that to the output of your tender to make sure its compatible.

Most SLA's do not want to see a charge current higher than 2 amps, if your tender stays under that, its probabaly okay, subject to the above.

Jon

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post #3 of 18 (permalink) Old 12-27-2006, 10:29 AM
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I do it all the time.

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post #4 of 18 (permalink) Old 12-27-2006, 11:05 AM
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Definitely check for the battery manufacturers recommendation. Mine said nothing over 1.5 amps, which is what my better tender is rated at.

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post #5 of 18 (permalink) Old 12-27-2006, 03:40 PM
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i don't use any battery minder/tender. i pulled my MF battery out and stored it in warm place (closet in our office room). i guess i will let you know how it went and if it is any good in spring. i don't anticipate any problems though as my friend does exacly the same thing and didn't have anyproblem with his 3 year old battery stored from novemer till may.
as someone with electrical backgroung i can't understand what good can constant trickle-charging do to battery life. but then again i'm might be wrong...

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post #6 of 18 (permalink) Old 12-27-2006, 08:14 PM
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Cool

Have you tried to start your bike after 2 or 3 weeks just to see if there is that much of a drain on your battery?I live in the northeast corner of CT.And it used to get really cold here ( not bad this year) and my bike starts right up .................
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post #7 of 18 (permalink) Old 12-27-2006, 08:53 PM
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Quote:
Originally Posted by Counselor View Post
Probably a stupid question, but what the heck?

Recently installed a sealed battery in my 01 750. I have a battery tender that I used last winter on my regular battery. Any problems hooking it up to the new one during down times? I ride year round but there are times when the bike may sit for two or three weeks between snows.
If the charger you used didn't hurt the other battery it won't hurt the sealed battery.

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post #8 of 18 (permalink) Old 01-01-2007, 12:17 PM
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Battery charge....

One piece of knowledge (I think) I have gained is to be sure your battery is as charged as possible when starting the bike up in the spring. Doesn't a well charged battery place the least strain as possible on an already weak stator charging system?

For what its worth, I have done it both ways- leave the battery in and try starting it up in the spring, and this year, pulled the battery and keeping in in the house with me. I now have a gel battery that I hope to keep a while....

Ben-
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post #9 of 18 (permalink) Old 01-01-2007, 07:01 PM
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Smile

I start my bike at least once a week in the winter months I dont have any trouble I let it run until it is warmed up.Maybe even take a little spin. Been doing this for years it always works for me.Yeah..............
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post #10 of 18 (permalink) Old 01-03-2007, 12:46 AM
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Quote:
Originally Posted by tankist View Post
i don't use any battery minder/tender. i pulled my MF battery out and stored it in warm place (closet in our office room). i guess i will let you know how it went and if it is any good in spring. i don't anticipate any problems though as my friend does exacly the same thing and didn't have anyproblem with his 3 year old battery stored from novemer till may.
as someone with electrical backgroung i can't understand what good can constant trickle-charging do to battery life. but then again i'm might be wrong...
Due to the construction of the batteries they hava some internal resistance so they discharge themselves little by little (also it has to do with the quemistry of the lead acid battery... hence sulfatation) about 1 to 2% total charge by every week since it was charged. As a battery get older the rate of discharge get's more steep until it does not hold any charge... When you apply a trickle charge (between 13.0 and 13.2 volts) the amount of current going into the battery is about the same it losses by the natural discharge but more important it stops they decay of the acid in suspension stoping sufatation (again some more quemistry). What makes trickel charge a good thing for the battery it keeps it top off but does not boil the water from the battery. In some applications this kind of charge can make batteries last for over ten years. In our case, it's relly nice to know when you want your bike to start it will be ready to do so... In your case tankist MF batteries discharge somewhat slower that regular batteries... still a trickle charge is good... no harm done... just make sure the charge you choose charges to about 1.2 to 1.5 amps... that's about the max current the stock size battery will take safely

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