Good deal. Not knowing if the Li was gonna cook itself would suck all the fun outta riding. The AGM is much more tolerant. Fine tune it and go out and enjoy it.
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81 XS650 running but have issues
- Thread starter Kyleshep49
- Start date
Kyleshep49
XS650 Addict
Quick question. When i mount up the battery voltage gauge, I’m just wiring it directly to the battery right and just watching it to see if it’s dropping real low and going up? From what i thought i gathered info wise was that the discharge and recharge kills the batteries. Just want to make sure I’m on the same page
When you turn the key on, you want to see about 12.5v.
After it's started at idle you want to see the same or slightly higher.
As you rev the engine, the voltage should increase.
Once voltage reaches about 14.5v.... it shouldn't increase past that no matter how high you rev the engine.
Anything lower than 11.5...12v is a concern because the battery is discharging.
Anything higher than about 14.5 is a concern because you're overcharging.
After it's started at idle you want to see the same or slightly higher.
As you rev the engine, the voltage should increase.
Once voltage reaches about 14.5v.... it shouldn't increase past that no matter how high you rev the engine.
Anything lower than 11.5...12v is a concern because the battery is discharging.
Anything higher than about 14.5 is a concern because you're overcharging.
Usually don't like this type machine See through ..but it comes out nice .Maybe Calendar material or a picture of the Pile of ashes after i caught fire and Ceased to be ( Just joking )
Kyleshep49
XS650 Addict
Like i said doing some trial and “error”….. error may end up being ashes but hey we learned right?
Personally I hook up a voltmeter to the coils positive terminal because it's that voltage that keeps things ticking over.
I posted some thoughts on how to safely charge a lithium battery here.
https://www.xs650.com/threads/tci-replacement-2020-it-works.57388/page-70
https://www.xs650.com/threads/tci-replacement-2020-it-works.57388/page-70
I mounted a cheap volt meter on my upper tree with velcro tape. $10 delivered ebay/amazon. It monitors voltage on the brown (ignition on Hot) in the headkight shell. This tells me what the system is seeing. That is one way of saying I didn't feel like running more wires to the battery
. I see 11.9 with ignition on and 13.9 running.
. I see 11.9 with ignition on and 13.9 running.
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Kyleshep49
XS650 Addict
Have you checked grounds(earths)? 12.9v at what rpm?
Kyleshep49
XS650 Addict
That was with just turning it on, haven’t really had a chance to ride it yet with it on, or haven’t charged battery yet since i got it. I’ll see what it does and shows once i ride it. I’m grounded well though
Kyleshep49
XS650 Addict
Ok so rode it a couple times. Battery voltage shows about 13 turning on meter. Then after ignition turned on about 12.6. Then while running with decent throttle up to 14.2-14.5. Then at a stop with lights on idle if it will drop back to around 13ish. Does this all sound about right for where it should be?
Yep. Those are good numbers.
Kyleshep49
XS650 Addict
Was the timing issues the pin that had fallen out? Did the Bike run correctly after that?
Kyleshep49
XS650 Addict
Yeah that helped my timing issue for sure because once it came out there wasn’t anything to lock the rod to the cam anymore and would change timing like crazy. In the end though besides that, may have been a part also from the beginning, it was all from that capacitor i was using (no battery kick only). Once i switched it out with a small Duracell 12v AGM battery it solved everything because my electrical system was getting what it needed finally.
Kyleshep49
XS650 Addict
Running strong still.
And no i didn’t go down i saved it
