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Post by fflintstone on Oct 9, 2013 10:33:47 GMT -6
That is a little high for a new battery--usually the new battery right out of the store is about 12.7 on my meter-so it is possible that different brands are a little higher in initial voltage--and your charging system is working and fluctuations while watching not unusual --the charging device,stator ,altenator,generator,can all do that and no problem unless it spikes and drops more that a few volts,then you need to look at your regulator which decides how much to put in the battery and regulate the proper amount of voltage as well--one other thing,make sure your testing equipment is testing properly--some get off a little over time--I found a web site that explains in detail all of this if you want to look---fflintstone---have fun--http://  .allpar.com/fix/codes/sensors/charging.html |
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Post by fflintstone on Oct 9, 2013 10:36:21 GMT -6
I tried to make a link to that web site and it didn't work so you would need to copy and paste --good luck,fflintstone
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Post by bobf on Oct 9, 2013 12:35:51 GMT -6
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Post by wheezy on Oct 9, 2013 12:36:06 GMT -6
All batteries 'leak' current between the plates over time. There is no way around it. All will fail, it's just some are better than others.
I just pulled my 50cc out after two years in the garage. I had bought a new battery (9Ah I think) two years ago, put 200 miles on it, and then moved. Bought the 250cc as well, so Little Red never got cranked. I put it on a charger overnight (with my dmm monitoring). It was charging fine, started around 5vdc, and got up to about 12.7vdc. As soon as I removed the charger, it immediately dropped to 8 volts. Just crap. I didn't expect the battery to go bad from no use at all, but oh well.
I'll move over my 12Ah from my 250 to get it started, but won't replace the 9Ah until I know I will use it more.
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Post by bobf on Oct 9, 2013 13:34:22 GMT -6
I have a case at home for a battery driven component. On it is a label that tells a person to charge the battery twice a year whether used or not. It says that if not charged on a regular basis that the battery can suddenly discharge and never allow itself to be charged again. Or words to that effect. I had on prior where I failed to charge the battery for more than one year. One day it was no longer usable. So now, with my second one, I am trying to remember to put it on the charger once in a while.
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Post by fflintstone on Oct 10, 2013 8:51:30 GMT -6
Well,yeh,batteries do corrode over time,we used to say 'sulfate',don't know what they call it on these new type batteries--but all that corrosion will settle to the bottom and short out the plates over time--friend of mine used to rebuild them years ago,he took the old plates out ,dug out the sludge on the bottom,and put new plates in if needed and put in fresh electrolyte and water--they were pretty good for old batteries--but nowadays ,I don't know if it is economical to rebuild or even if you can get parts--best to keep the battery charged up for good service--fflinstone
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Post by lanternscooter on Oct 10, 2013 10:00:01 GMT -6
Yeah these can sulfate just like any other battery. Lawnmower batteries do the same thing over winter if there's no maintainer on em. Before I kept a maintainer on mine, I would get >2 years out of a battery. Now with maintainer, I got 5 out of the last one. They're the walmart everstart brand too.
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Post by bobf on Oct 10, 2013 13:01:58 GMT -6
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Post by ellpee on Oct 10, 2013 13:34:21 GMT -6
I have had batteries last longer than the warranty ,like the Interstate brand and I had one or two from Auto Zone last 5 years or more.of course we have lots of different temps here in NW Tenn,maybe it helps..but I usually go to Auto Zone or O'Reillys and they got your phone number in the system and they can pull up everything you bought there,and you don't have to worry about losing a receipt--it is good to go where they know you by your name-lol-fflintstone  Maybe I should quit "investing" in the long-warranty batteries; the primo models tend to be up in the seven-year range, seems to me, and that's where I've had my underwhelming experiences. Yes, AutoZone is good on warranty returns. If they're going to croak after 3-4 years anyway -- that's been my experience in AZ's three-digit summers, even though we keep our vehicles garaged most of the time -- then I might as well save the money it costs to buy the high-enders. With prices going up all the time, I'd probably save more that way than via the pro rata refund. No matter what grade of battery you buy, my experiences suggest that at some point, with no warning whatsoever, it's going to die and leave you calling Mama or AAA to bring you a new one. Only solution that makes sense to me is to keep a replacement in the trunk starting at about year 3. But this is more about car batteries than scoot batteries, maybe it needs to be moved over into non-scooter discussions. |
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Post by fflintstone on Oct 10, 2013 19:50:23 GMT -6
13.41 will charge a good battery,just your charger is not up to spec--most altenators and scoot stators put out near 14 volts or more--the voltage going from charger to battery is regulated by a diode or in older vehicles ,a voltage regulator--auto regulators were set to 13.8 volts ---so if it was below 13 volts,it was suspect..and you mentioned your battery fluctuated a little while running ,so you may have a stator or something getting a little faulty and ready to quit on you--best to keep an eye on it --see if this link works,a guy showing on You Tube how to check old stators and regulators and stuff--it is a long video--but interesting |
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Post by bobf on Oct 10, 2013 20:54:07 GMT -6
OK, thank you fflintstone. Getting late for me but I have time in the morning to take a look at the film.
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Post by fflintstone on Oct 11, 2013 8:14:28 GMT -6
Ah--yer welcome--it is all about the ride--happy trails,fflintstone
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Post by jonvolks on Nov 3, 2013 12:34:16 GMT -6
I have two scooters, a Jonway yy250t and a Sunny 300. The Jonway will sit for a week or so and still start. The Sunny will go dead in a couple of days of sitting. Both are only a year old. I think I will replace the Sunny battery next summer.
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Post by lanternscooter on Dec 1, 2013 23:09:01 GMT -6
I have two scooters, a Jonway yy250t and a Sunny 300. The Jonway will sit for a week or so and still start. The Sunny will go dead in a couple of days of sitting. Both are only a year old. I think I will replace the Sunny battery next summer. my scooters battery does the same thing. original batt too. chinese made of course. would go dead after 2 days of sitting. ive been keeping one of the $5 harbor freight tenders on it now. scoots been in winter storage a week now and it started good today when i give it a try |
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Post by jonvolks on Dec 7, 2013 11:16:55 GMT -6
Thanks, I just bought 2 of those tenders. It says to use on fully charged batteries. The Sunny will not hold a charge. I put one on the Jonway for the winter months. Next spring I will replace the Sunny battery.
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