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Discussion Starter #1
Hi,

my bike won't charge the battery I believe. It fires right up when the battery is fully charged but after riding around and trying to start 3 or 4 times the battery dies.

I have replaced already the RR, Stator, Magneto, Wiring Loom, Battery.

https://www.ebay.co.uk/itm/Genuine-Ultra-Max-YTX9-BS-12V-8AH-90-CCA-Motorbike-Motorcycle-Battery/282798456252?ssPageName=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649

Battery readings are:

Ignition off = 12.9 V
Running at idle = 12.7 V
5000 RPM = 13.7

I am looking for help I don't know what to do next anymore to be honest.

Thank you.
 

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Discussion Starter #3 (Edited)
I did that and these are the readings I got.

Ignition off = 12.9 V
Ignition on = 12.5 V
Ignition on high beam = 12.3
Running at idle = 12.7 V
5000 RPM = 13.7

It drops down to 10.6 V when starting
 

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That's not really a load test, I mean you are loading it, but there's a piece of equipment that actually does that. It sounds like it's a bad battery If it's dropping to 10v durring a start.

Sent from my SM-G950U using Tapatalk
 

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I guess that's technically acceptable, but bring to battery to a place that has a battery tester and get it tested!

Sent from my SM-G950U using Tapatalk
 
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