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Charging Issues ???

  • Thread starter Thread starter Guest
  • Start date Start date
G

Guest

Guest
Hi guys, complete novice here, no idea of electrics, gotta ask !
82 GS1100L with new Varta battery of 3 months.

Switched off, 000 rpm - 12.62v
Switched on, Light on, 000 rpm - 11.80v
850rpm - 12.45v
1200 rpm - 14.40v
2500 rpm - 13.77v
5000 rpm - 13.77v

hope this is enough info, whats wrong and how to fix it,
****cant get an avatar to upload, any ideas***
thanks in advance guys for all your help.
 
Chromedome said:
Hi guys, complete novice here, no idea of electrics, gotta ask !
82 GS1100L with new Varta battery of 3 months.

Switched off, 000 rpm - 12.62v
Switched on, Light on, 000 rpm - 11.80v
850rpm - 12.45v
1200 rpm - 14.40v
2500 rpm - 13.77v
5000 rpm - 13.77v

hope this is enough info, whats wrong and how to fix it,
****cant get an avatar to upload, any ideas***
thanks in advance guys for all your help.
Click to expand...


It looks like you only have dirty connections and battery is just a little low because of it. You should clean the connections between the R/R and Battery. Add the Single Point Ground and the voltages will probably increase at 2500-5000 rpm to over 14.25V.
 
Chromedome said:
Hi guys, complete novice here, no idea of electrics, gotta ask !
82 GS1100L with new Varta battery of 3 months.

Switched off, 000 rpm - 12.62v
Switched on, Light on, 000 rpm - 11.80v
850rpm - 12.45v
1200 rpm - 14.40v
2500 rpm - 13.77v
5000 rpm - 13.77v

hope this is enough info, whats wrong and how to fix it,
****cant get an avatar to upload, any ideas***
thanks in advance guys for all your help.
Click to expand...

Charging system is working. It is charging. So stator good, R/R good.

Volttage readings going down at higher rpms, when would exepct them to be higher, indicate that the higher current is having to go thru some resistance somewherere. Like Posp says.

Check connections between R/R and the battery (red wires) , check battery connections + and - .

You ask "whats wrong". What symptoms are you concerned with?
Starting okay?

.
 
Chromedome said:
Hi guys, complete novice here, no idea of electrics, gotta ask !
82 GS1100L with new Varta battery of 3 months.

Switched off, 000 rpm - 12.62v
Switched on, Light on, 000 rpm - 11.80v
850rpm - 12.45v
1200 rpm - 14.40v
2500 rpm - 13.77v
5000 rpm - 13.77v

hope this is enough info, whats wrong and how to fix it,
****cant get an avatar to upload, any ideas***
thanks in advance guys for all your help.
Click to expand...

I wish my charging issues looked like this :)
 
11.8 under energized load - key switch on - not running . shows me that your battery is weak and easily loses power quickly. don't care if it is new- some are bad from the start. How a battery is filled and initially charged means a lot for a long lasting battery. A good battery would not go lower than 12.2, this is a sign to take note of if you are having starting issues. Next have someone hold the meter connections to the battery when you engage the starter motor - if it dives to high 9's or low 10's and the starter motor is slow - this is where a mechanic has to consider the power of battery OR the excessive draw of the starter motor. get another 12 volt battery and hook it in parallel (like jumpstarting) if the thing still has trouble - starter motor if not battery -- of course you should clean all contacts that is just common sense.

your DC volt readings are within good range the while running. I am assuming you initial problem is that the bike is difficult to start
 
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