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Hi All: I've owned a 2003 Blackbird with 15k miles on it for about a year now and it's in nearly pristine condition. Runs like a top and never had any issues. Last week I headed from Toledo, OH to Walton, Ky to attend the Total Control riding course. Basically, it's one long day in a baking hot parking lot learning proper throttle and cornering, and such. Each maneuver is at pretty slow speeds and there's lots of time sitting in idle with the bike running, waiting for your turn to go. Each time I sat motionless I watched the digital temp creep up, up, up. Highest temp was around 240 degrees fahrenheit. Later in the day I went to start the bike and the battery struggled mightily turn the engine over and then crapped out. I ended up having to push start the bike to finish out the afternoon and it always fired right up via manual pushing/ clutch popping. I assumed the old battery was starting to die and would need to be replaced. At the end of the day I purchased a portable jump starter and stuffed it in my backpack and headed about ten miles on the highway to my hotel for the night. As soon as I hit the highway, the bike immediately cooled down to normal operating temp (177-183 degrees). The next morning I had jump starter out, assuming the battery was dead and I'd have to jump it to get home -but the bike fired right up. I rode home (4 hours on the highway) and stopped twice for gas/break. Each time the bike fired up without issue and ran fine all the way home. Once home I took the battery out and took it to Autozone to have them check it. Status: Battery is fine and charged to 100%. A little research here and I checked the regulator/rectifier for any signs of excessive heat or burning but all wires and reg/rec look perfect. There are no smells of anything burnt. I also read on here there were some underpowered reg/rec used by Honda with first gen Birds but I have a 2003 and my reg/rec has the cooling fins all over it and I heard issues with this model year were rare. Finally to my question: I'm leaving in a few weeks for an extended trip and am now a little skittish about reliability. Everything runs fine now and there are zero issues starting bike with existing battery. Could my issue have just been the result of a hot/unhappy bike and I'm fine as long as I don't sit motionless for an extended period of time or should I be preemptively changing out the reg/reg, stator and/or battery? Any thoughts of advice would be greatly appreciated. John from NWO
What say the forum? Looking at replacing the battery in my CBR1000RR. Considering a lithium as a quick search shows them at about the same price as a Yuasa lead acid type. Of course that will likely mean a charger capable of charging this type of battery. If you have charger input throw it in the thread. I have vaguely followed these the past few years but wasn't buying. I figure the weight loss may be a good thing for a litre bike. The prices and varieties have changed rapidly.
With the power switched to ON, but not started, what should the base voltage be on a good battery? How far should it drop during the starting cycle (when the drain is heaviest)? As a precaution, I will take the battery in for load testing, but it tested fine last time (last year?). I'm getting 12.5v but it will start to drop fast, and I've seen it drop as low as 9v during startup. Keep in mind, I have at least one HID bulb drawing power as soon as the bike is turned on, so that might be the cause. Pulling the fuse for the headlights, I get 12.5v with a drop to about 10v during startup. I'm pretty sure I replaced the battery prior to 2012...I have to search for the receipt...Big Crank ETX12.