Battery Charging Question

Finally checked the charging voltage on my '97 with the following results (new battery just installed).

At idle voltage was 14.8, as I increased RPM the voltage went down; at 5000 RPM voltage was about 13. 6V.

Is this normal?

Seems odd to me that the voltage goes down as engine RPM increases, unless the R/R is not working.

The R/R connector is fine, no burned marks or anything.  All the resistance checks on the R/R are okay.

I replaced the battery just last week as it died when I was trying to start the engine.  I removed the battery to find that it was completely dry and I mean 100% dry...and it is not supposed to be.  I have only had this bike for two months or so, so I have no history how old that battery was or anything.  Wondering if the battery got boiled dry?

Thanks.

Seems fine by me, also do the measurements with the engine truly warmed up.

Possibly indicates an issue with the stator. Do "The Drill" then get back with us on your numbers.

your R/R is working, the r/r takes the voltage down from the Stator to a more wire friendly voltage, when you R/R is not working You get higher voltages, mine was at about 19 volts, which will kill batteries, GPS's that are not fused( yes I killed two of them that time :wacko: ),  Your voltage sounds fine, Check the stator voltages as shown in the manual and you will have more information to go from.

It May be that the regulator is over-regulating. Do the checks w a multimeter in the thread Titled "the Drill" and report Back

I cannot find the thread, "The Drill"...have tried searching four time now and I did find another reference to it, but not the actual thread.  Where is this thread at?

I will follow the service manual and check stator voltages.

here are a couple of Links with a lot of info

http://www.bikersora...ead.php?t=76159

http://www.electrosp...t-finding-guide

download the pdf flow chart it is a big help...

I cannot find the thread, "The Drill"...have tried searching four time now and I did find another reference to it, but not the actual thread.  Where is this thread at?
 
I will follow the service manual and check stator voltages.

Check out the first 3 pinned posts in the electrical section. The 4th presently regarding 08 charging issues also has links to other forums, one of which explains how and why R/R's fail. My 5th gen had the voltage dropping as the rpm came up. A new R/R fixed it in that case. YMMV.

I cannot find the thread, "The Drill"...have tried searching four time now and I did find another reference to it, but not the actual thread.  Where is this thread at?
 
I will follow the service manual and check stator voltages.

There are several threads with it in there....pulled this from one title "08 6th gen - Charging Issue Advice":

The Drill:
Go through all your connectors for burnt leads, dig deep. Crispy wires? Not good. Your gonna have to fix that!
Then---Go through this starting point quick list. You will need a multimeter too.
Steps:
- Recharge battery overnite - then to take it to Autozone, Batterys Plus or similar to load test. -- Good? Bad? – An iffy battery can fake you out and act like a bad R/R. Buy new if needed.
- With good battery fire it up, warm up for a minute or two.
These are R/R quick checks---
--- With voltmeter at battery get voltages -- idle volts? 5000 rpm volts? What’s the numbers? Should be in 13ish min idle and in 14s at revs. If in the 12s at idle, try at 1900 rpm. (It’s not unusual for the system to be in discharge or no charge at idle.)
- Check stator
- 1. Pull connector apart. Set meter to resistance. Check pin to pin stator side, 3 yellow wires, A to B, B to C, C to A. What’s the numbers? 3 separate readings --Should be less than 1.0 ohms. (Engine off)
- 2. Check continuity from each A,B,C pin stator side to ground, -- -should be infinity - nada nothing. no continuity. -- 3 separate checks. (Engine off, again connector is apart)
- 3. Crank it back up. Do another pin to pin thing, but set meter on AC volts. idle and 5000 rpms. What's da numbers? Should start 15 -20ish and climb 50ish and more. Again – 3 readings stator side connector and still apart.
- Repeat hot.

Looks  good .