| Author | Message | ||
     Oregon_wingnut |
Greetings Friends, I am investigating what I believe to be an abnormal temp of the battery in my Uly. The bike is an 06. The battery looks like original or a factory replacement. (it holds a charge fine) A couple of weeks ago I discovered the bike suffering from the connector 77 charging failure. (Stator ohm'd out fine) I changed out the connectors at that junction (77) I left original Voltage Regulator in place. The system began charing the battery again. After subsequent rides I have pulled the seat and tested the battery... in each case 12.9v -Prior to starting the engine today I tested the battery and read 12.9... all seems well. I went out and lapped the lake nearby (50 miles) and returned noticing a scent I'd not noticed before... which had me pull the seat looking for something warmer than it should be... I used a laser thermometer and my snout. Nothing obvious with the snout, but the laser reported that the battery was rather warm. In fact not believing my eyes, I stuck a finger on the battery..... too hot to linger a finger! That is not a happy battery. The plastic case of the batter was 175*f when I aimed the laser at it... which was quite a few minutes after switching the engine off. (so it was likely several degrees warmer than that during operation) Both terminals of the battery also read this number. Other items in the vicinity of the battery were a good 50 degrees cooler.. some *much* more than that. May I please ask that one of you reading this, who owns a laser thermometer, point it at your battery after your engine has been running for an hour or so? Assuming your bike is not misbehaving. I would be grateful for the data. During the reassembly of the connector 77 problem I tested voltage at the battery while idle and high R's and was not surprised or worried by the numbers I read on the multi meter. Mid range 13v while high rpm's and low to mid 12v while idle. Thanks for your help folks Doug~ | ||
| Oregon_wingnut |
After pondering this problem for a day or so I decided to change the Voltage Regulator/Rectifier... I double checked connections and put a multi meter on the battery. And went to fire it up. Not enough umph to turn the engine over in the battery. I suspect the battery was harmed by the heat it endured. (I did hear sizzle and smell sulfur that day). I gave it a boost and started the engine... all looked well on the Multi Meter with regards to charging the battery, so I rode it for a half hour. Best half hour of the day too btw.  Returned to the garage and aimed the thermometer at the battery and surrounding area.. no extra heat now. However, the battery is slowly losing it's charge since turing the engine off about 4 hours ago. 12.7v when I turned it off. 12.2 now. Half a volt doesn't seem like a big deal... But, like I said, I think I boiled off some battery fluid in a sealed battery. (these aren't gel are they?) I expect to see sub 11v tomorrow morning... If so, I'll pick up a battery. I think I am about at the end of this problem. I cleaned the chassis ground while I was in there too btw. There was a bit of Galvanic corrosion happening there. D~ | ||
| Sparky |
Sounds like a battery problem with shorted cells. Don't fool around with it. I'd get that batt replaced pronto before something expensive happens! | ||
| Buell_bert |
So glad it did not blow up. It sounds like quite a unique incident though. It does sound like you are on the right path. |
