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#4428743 - 06/11/17 05:03 PM Toppin up a sealed motorcycle battery
maverickfhs Offline


Registered: 12/28/16
Posts: 2010
Loc: VA
So I have a sealed(maintenance free) motorcycle battery, should I top it off or not worth it?

So far, no problems with anything smile

Since, we are at it, how often maintenance ones be topped off? Once after every 2-3 months or?

Thanks for the help.
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#4428750 - 06/11/17 05:12 PM Re: Toppin up a sealed motorcycle battery [Re: maverickfhs]
user52165 Offline


Registered: 10/21/11
Posts: 1332
Loc: CA
Sealed but you can top it off??

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#4428754 - 06/11/17 05:13 PM Re: Toppin up a sealed motorcycle battery [Re: user52165]
maverickfhs Offline


Registered: 12/28/16
Posts: 2010
Loc: VA
Originally Posted By: user52165
Sealed but you can top it off??


Yeah, I did see some videos where they are removing that sealed area and topping it up.
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#4428760 - 06/11/17 05:20 PM Re: Toppin up a sealed motorcycle battery [Re: maverickfhs]
Olas Offline


Registered: 12/11/13
Posts: 3933
Loc: Manchester, England
It's a semantic impossibility.

To top up you must break the seal, and then You are topping up an unsealed battery.
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#4428763 - 06/11/17 05:28 PM Re: Toppin up a sealed motorcycle battery [Re: maverickfhs]
Donald Offline


Registered: 03/21/04
Posts: 20472
Loc: Upstate NY
No. Not designed to be topped off. If it did meed water then probably a charging issue.
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#4428767 - 06/11/17 05:30 PM Re: Toppin up a sealed motorcycle battery [Re: maverickfhs]
maverickfhs Offline


Registered: 12/28/16
Posts: 2010
Loc: VA
Great, thanks.

I'll just leave it alone, what about the one which does needs maintenance and periodic top ups, how often that should be done?

Thanks
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#4428774 - 06/11/17 05:39 PM Re: Toppin up a sealed motorcycle battery [Re: maverickfhs]
bioburner Offline


Registered: 09/19/16
Posts: 1418
Loc: Minnesota
I used to check at least monthly and top of with distilled water
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#4428777 - 06/11/17 05:44 PM Re: Toppin up a sealed motorcycle battery [Re: bioburner]
maverickfhs Offline


Registered: 12/28/16
Posts: 2010
Loc: VA
Originally Posted By: bioburner
I used to check at least monthly and top of with distilled water


Thanks, on my NH750 it's in a very awkward position and whole battery tray needs to come out for topping up, means removing everything.

But, I'll stick to monthly now.
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#4428825 - 06/11/17 06:58 PM Re: Toppin up a sealed motorcycle battery [Re: maverickfhs]
bubbatime Offline


Registered: 03/18/08
Posts: 5628
Loc: South Florida
I have popped the tops off of "sealed" batteries and found them nearly empty of fluid.
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#4428827 - 06/11/17 07:00 PM Re: Toppin up a sealed motorcycle battery [Re: bubbatime]
maverickfhs Offline


Registered: 12/28/16
Posts: 2010
Loc: VA
Originally Posted By: bubbatime
I have popped the tops off of "sealed" batteries and found them nearly empty of fluid.


So is it worth it to prolong the life of battery?
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#4428850 - 06/11/17 07:25 PM Re: Toppin up a sealed motorcycle battery [Re: maverickfhs]
E150GT Offline


Registered: 03/11/12
Posts: 1110
Loc: San Antonio, TX
so how do sealed lead acid batteries work? They have to vent somehow and then they would be low. I can see how an AGM would be sealed but not a lead acid. I stopped by AAP to look at batteries and I only saw sealed so I went with a Durmast Gold. I can pop the cap off.
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#4428873 - 06/11/17 08:18 PM Re: Toppin up a sealed motorcycle battery [Re: maverickfhs]
kc8adu Offline


Registered: 08/02/05
Posts: 894
Loc: dayton oh
its likely an agm.
dont open it unless it is showing distress.
like slower than normal cranking even fully charged.
then you might squeeze a bit more life from it by opening it up and adding a small amount of distilled water to each cell.
a cc or 2 in each.
i use an impedance tester to monitor any effect.add,test,add again till no more improvement is noted.
at this point you have nothing to lose but a bit of time.and its worth it if it gets you a few more years.
i have recovered some very expensive agm industrial batteries that were overcharged or by design lose water.
i am currently running a 1000ah gnb absolyte bank that was turned in for scrap at 5 years.
adding water and equalizing it brought the ir back to new specs.
not bad for about $10k in free batteries.

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#4435726 - 06/19/17 09:02 AM Re: Toppin up a sealed motorcycle battery [Re: maverickfhs]
Panos Offline


Registered: 12/08/16
Posts: 63
Loc: Greece
Yes you can remove very carefully the sealing lid so as you do not damage it with a knife and add very little distilled water. Just a couple of drops in each cell.I tried this but added too much water with no damage but because i lowered the acid density quite a bit, the resting fully charged voltage got about 0,1 volt lowered. No problems however.I personally would do that to a battery older than 4 or 5 years or to one that drains fast after some years of service. My original ytx9 ninja 250r battery is still working with no problems after 8+ years, with an alarm system installed for the last 5 years...
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#4449283 - 07/04/17 10:47 AM Re: Toppin up a sealed motorcycle battery [Re: maverickfhs]
totegoat Offline


Registered: 12/21/11
Posts: 1262
Loc: Ca
Battery Tenders are the best thing I've found to prolong small battery life. I leave them plugged into toy batteries 24/7.

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