I haven't checked mileage lately yet I think its around 4k or so. I usually just have the tripodometer on. Anyway, is there a time I should replace the battery even if it runs well and I have no problems?
+12013? 3 years? I can beat that.
I'm still using the original battery in my 2011 CBR250R. My CBR was the first one off the truck and the first CBR250R sold at my dealership the very first year the bike was released. It's probably the oldest 1st model year CBR250R in this part of the country
The first accessory I bought for it was a battery tender and I've kept it hooked up any time the bike isn't being ridden. If the engine isn't running then the battery tender is.
In 5 years of winter storage in an unheated shed it has never once failed to start up on the first crank in the spring and I've had no battery-related problems whatsoever since day one.
I'm sure one of these days it may give up the ghost purely from age alone, but as of today it gives no indication at all that it doesn't intend to last forever.
From my experience I believe that I owe this longevity 100% to the maintenance function of the battery tender. A lot of people don't use their tenders unless they have a problem starting, or if the bike is going to sit for a few weeks. Or they'll let the bike sit for a few weeks and only then decide to hook it up. The device is designed to keep your battery in top shape and prevent it from discharging. I think that any time you allow your battery to discharge, even a little bit, it negatively impacts the integrity of the battery and the effect is cumulative over time. The bike may still start, but those continual discharges may effect the battery's ability to build back to and hold the optimal charge it was designed to hold fresh from the factory. At least that's my theory based on my own empirical evidence and I'm sticking to it. lol.
Hi Kiwi rider,+1
The 2nd worst thing you can do to a battery is not use it and the worst thing you can do is not use it AND let it discharge.
Ive been running a lithium Ion battery in my CBR's the last 3 and half years and it has just died now.