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indr 10-14-2012 11:04 PM

Battery Charge Q
 
Battery. Was left alone, without a charger for about 6 months. I charged it up a week back using a Ctek charger.

Hooked it up again today. The charger has an indication for Currently Charging / Maintenance, which comes on anytime the voltage drops below 14V.

Once 14.4V is reached again, there is an indicator for Fully Charged.

The charger is switching between the ]Currently Charging / Maintenance mode and Fully Charged mode very frequently.

For 50 seconds it'll indicate Fully Charged. Then, for 2-3 seconds, it'll indicate Currently Charging / Maintenance. And it just keeps cycling like that.

Is this normal? 0.4V loss every 50 seconds...

Should I junk it?

Full disclosure: I tried hooking up hooking up the starter motor (standalone, detached from the bike) directly to the battery just a moment ago before I hooked it up to the charger. There was a loud noise during which I flinched and closed my eyes and found the motor about 4 inches away...

Sport 10-14-2012 11:38 PM

Could be toast but I'd have it load tested first. Most places that sell batteries can test it for you for free. If it severely discharges under load and doesn't recover quickly, it's toast.

Tosh Togo 10-15-2012 01:04 AM

What kind of battery is this?. :ear

buickid 10-15-2012 03:31 AM

Leaving a battery alone for 6 months could easily result in it being toast, especially if it wasn't fully topped off before sitting. I try to top off my batteries every couple weeks at a minimum.

H96669 10-15-2012 09:42 AM

Quote:

Originally Posted by indr (Post 19819598)
Full disclosure: I tried hooking up hooking up the starter motor (standalone, detached from the bike) directly to the battery just a moment ago before I hooked it up to the charger. There was a loud noise during which I flinched and closed my eyes and found the motor about 4 inches away...

Post 2.....!:evil

http://www.advrider.com/forums/showthread.php?t=832406

Careful using a freshly charged battery to test a starter, doesn't take much of a spark to blow up a freshly charged L/A.Lesson learned a very long time ago.

LuciferMutt 10-15-2012 11:23 AM

:huh 14.4V for fully charged?

12.9V is fully charged. Anything over that means the battery is being actively charged at a high rate.

H96669 10-15-2012 01:10 PM

Quote:

Originally Posted by LuciferMutt (Post 19822827)
:huh 14.4V for fully charged?

12.9V is fully charged. Anything over that means the battery is being actively charged at a high rate.

Possible just after unplugging the charger.For a few minutes anyway....!:rofl Supposed to let them sit for quite a while, as in overnight to let the charge equalize then take a reading.Or put a load on it and wait for the bounce back. Then check against the charge tables for that type of battery, whatever it is.The last is for the ones who like to measure Voltages at 2 decimals.:wink:

All out there somewhere. May even be in the C-Tek litterature/owner's manual. Most of it is there:

http://www.batteryfaq.org/

HapHazard 10-15-2012 01:54 PM

Quote:

Originally Posted by Tosh Togo (Post 19819772)
What kind of battery is this?. :ear

Quote:

Originally Posted by Sport (Post 19819655)
Could be toast but I'd have it load tested first. Most places that sell batteries can test it for you for free. If it severely discharges under load and doesn't recover quickly, it's toast.

You are taking the "word" of a charger, without actually trying the battery?

Are you sure this charger is working properly? You're assuming it is, and it might not be. "Rest" the battery as suggested above and check the voltage with a digital volt meter (Harbor Freight gives them away). If it reads low (<12v) you could try a less fancy charger and see what happens. It couldn't hurt.

Really need to know what kind of battery it is (AGM, flooded wet cell). If it is a wet cell, is the electrolyte level correct?

A wet cell battery can be tested with a hydrometer (even the cheap "count the floating balls" version) and that will tell you the state of charge or if you have a weak or dead cell.

With AGM, you can't use a hydrometer, and some form of load testing would need to be done. (Load testing a wet cell is great entertainment, watching the bad cell fizz). Not that I'm their salesman, but HF has a 100amp tester for $25. The 500amp for $60 is overkill for bike batteries, but would let you load test bigger (car/boat) batteries as well.
http://www.harborfreight.com/100-amp...ter-90636.html

We await more info...:ear

indr 10-15-2012 04:04 PM

More info:

Yuasa YTX9-BS

Don't have a voltmeter. Gotta buy one. Away I go.

baloneyskin daddy 10-15-2012 04:30 PM

Why don't you just put the battery in the bike and try it? If it works its good. Make sure to check the charge rate in the bike .

H96669 10-15-2012 06:28 PM

Harbor Freight....Eh! we are Canadians. Cheap at Canadian Tire and cheap all right I already returned 2 of them.

Funny thing is I was getting abnormaly high voltages out of a battery, did not make sense for that new Odissey. Hum....went inside and got my other exact same meter. Voltages back to normal.:huh

Low battery in the cheap meter was giving me higher voltages on testing.:wink:

Can't trust them cheap tools, got to have 2 of them to doublecheck the readings....:lol3

indr 10-15-2012 07:53 PM

Gonna order a Fluke.

HapHazard 10-15-2012 07:58 PM

I'm no Thomas Edison, but I've never noticed a difference in the meters - I have a decent but rather low-end Circuitmate and a drawerfull of HF meters I got free with coupons. I'm intrigued (and a little worried). I'll have to do a test on them.

At work they sent some of our people to a troubleshooting class, and they were given some of the saddest tools and meters I'd ever seen - HF meters are like Flukes compared to those things - most of them broke during the class and none lasted more than a few months afterwards.

scapegoat 10-16-2012 06:10 AM

Quote:

Originally Posted by LuciferMutt (Post 19822827)
:huh 14.4V for fully charged?

12.9V is fully charged. Anything over that means the battery is being actively charged at a high rate.

Every battery charger including the three battery tenders I use take a battery to 14.3 which is considered max voltage. From there its switches back and forth like your seeing. After a charger is unplugged it will come back to 12.6 or 12.8 (which is correct for a 12v battery) sooner than later. the 14.3 is considered what a good charging system will create at full service,below 12.6 after sitting its questionable of its serviceability. Stick a DVM on it while cranking the bike over for several seconds, if it falls below I wanna say 10.5 volts then its pretty much spent.

H96669 10-16-2012 09:51 AM

That:Yuasa YTX9-BS

Buy a Hydrometer and....safety glasses....rubber gloves....and a big box of baking soda. Keep water hose handy and wear your old clothes just in case.:wink:

Trust me on the safety part....I use to fill batteries in my youth, nothing to be complacent about those however harmless they may look to some.:eek1

$20.00 meters from CT are more than good enough for what most of us will do with them. Good warranty anyway at CT....:rofl I think they do have a low battery warning, I guess I'll have to read the manual(s) if ever again I get strange readings. Or ride next door and borrow his really good one.

Mind you....I have never counted my meters, I have a few, one permanently with the bike's tools. All good enough for what they are.And one to mount in the dash, very bad things can happen on my bike if attempting to start it with a low battery. Bad as in....very expensive to fix.No letting that "Magic Smoke" escape....:huh

Not much need for them with an Odissey battery altough I have done the tests with the battery left connected untendered for 5-6 weeks. All good....!:clap And much safer to handle.

If, and only if, you go for the cheap(er) CT meter, try the switch in the store, that's what broke on mine twice. One never even worked right out the box, the other one failed early but you can tell if the switch action isn't smooth at first. The other twos.....no problems in 3+ years just have to remember to keep a good battery in there and turn them off after use.

Motors....batteries.....and maybe even meters, nothing should really sit for a long time and yes 6 months is a long time, without some preventive maintenance, much cheaper and lots less aggravating that way.


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