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post #1 of 16 Old 08-01-2015, 05:40 PM Thread Starter
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Lucky me

I ride to Autozone to get some parts for my truck. When I came back out my battery was dead. Lucky for me I was right outside of Autozone.

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post #2 of 16 Old 08-01-2015, 05:54 PM
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Well piss.

30,000 mile 919 survivor. No plans of stopping the abuse any time soon.
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post #3 of 16 Old 08-01-2015, 09:18 PM Thread Starter
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The battery is bad. I am getting a new one.

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post #4 of 16 Old 08-01-2015, 09:52 PM
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Bad news good timing.

My classified(s):
Nothing at the moment

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- '96 Race-retired GSXR 750 (Sold)
- '01 RC51 SP1 (Sold)
- '03 919

"Security is mostly a superstition, it does not exist in nature: avoiding danger in the long run is no safer than outright being exposed. Life is either a daring adventure or nothing."-Helen Keller
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post #5 of 16 Old 08-01-2015, 10:04 PM Thread Starter
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It's been so hot lately, I think that has something to do with the failure.

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post #6 of 16 Old 08-02-2015, 04:52 AM
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I love new batteries! Old ones suck!

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post #7 of 16 Old 08-02-2015, 10:44 PM Thread Starter
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So my new battery is a GTZ10S-BS FP. It is a GS Brand battery that is relabeled as Duralast. GS Batteries make Yuassa Batteries or the other way around. One is the subsidy of the other. About Us | GS Battery (USA), Inc. The specs that GS has on the battery for CCA is 190 while on Autozone's website it is listed as 180 CCA.

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post #8 of 16 Old 08-09-2015, 10:47 PM Thread Starter
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My battery went dead again. I check the charging system when I put the new battery in, and it was within specs from the service manual. I went to the gym, came back out and it was dead. I had to push start it this time. I have it on my automatic battery charger. I checked the voltage when I put it to charge and it was 9.8 volts, which is pretty much dead.

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post #9 of 16 Old 08-09-2015, 11:01 PM
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Quote:
Originally Posted by captainchadl View Post
My battery went dead again. I check the charging system when I put the new battery in, and it was within specs from the service manual. I went to the gym, came back out and it was dead. I had to push start it this time. I have it on my automatic battery charger. I checked the voltage when I put it to charge and it was 9.8 volts, which is pretty much dead.
Definite short somewhere bro, gotta find it

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post #10 of 16 Old 08-10-2015, 12:07 PM Thread Starter
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Quote:
Originally Posted by Whiplash97 View Post
Definite short somewhere bro, gotta find it
Yea, I would have to say you are right about that. I tested the regulator. It is barely pumping out 12 volts. I tested it with it unplugged from the harness, as well as with it plugged in. I would have to say that the regulator is shorting all the current to ground. So, the correct voltage is not going to the battery. It must have been intermittent at first, that is probably why I didn't catch it right away.

I know everyone says that these things hardly ever or even never fail on Honda motorcycle, but it is possible.

I also checked my Ac current coming from the alternator and I was getting a consistent reading of about 44 volts A/C across each phase at 2500 rpm, and all the resistance test where good. I even checked it with the engine at operating temperature just to be certain this wasn't a heat related failure with the alternator.

Battery was fully charged when I was doing this test.

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post #11 of 16 Old 08-10-2015, 12:35 PM
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44volts!!? Is that what it suppose to be!?

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post #12 of 16 Old 08-10-2015, 12:37 PM Thread Starter
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Quote:
Originally Posted by Whiplash97 View Post
44volts!!? Is that what it suppose to be!?
Yeah that is a good value for the alternator. Considering that was only at 2500 rpm. Remember that is alternating current and that is also before it gets to the rectifier and then to the regulator. The voltage directly from the alternator could very well get as high as 70 volts A/C, if not higher.

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post #13 of 16 Old 08-10-2015, 02:17 PM
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Originally Posted by captainchadl View Post
Yeah that is a good value for the alternator. Considering that was only at 2500 rpm. Remember that is alternating current and that is also before it gets to the rectifier and then to the regulator. The voltage directly from the alternator could very well get as high as 70 volts A/C, if not higher.
Ohhh...ok I remember my GSXR being like that too, just sounded really high at first

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post #14 of 16 Old 08-10-2015, 02:26 PM Thread Starter
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I ordered a used one from eBay, so hopefully it works well.

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post #15 of 16 Old 08-10-2015, 05:29 PM Thread Starter
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I don't think that the regulator / rectifier that is currently on my bike is an OEM part. I think it is a cheap Chinese remake from eBay

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post #16 of 16 Old 08-13-2015, 12:10 PM Thread Starter
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Well, I got my new, used, OEM regulator in the mail that I had bought from eBay. It is now holding voltage at ~14.38 volts DC at idle and when I increase the idle. I would have to say the problem is solved.

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