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The battery keeps going flat if only used occasionally, is this correct battery for CBR1000rr8?
I have a 2009 CBR1000rr8 and after not using it much during the winter of 2018/2019 the bike would start up fine but when trying to leave a petrol station shortly after the first short run, or restart the bike after a little ride, the battery would go flat, so I charged it up again and if I used it daily it was okay. However, if I had not used the bike for a month or so I experienced the same problem, flat battery after a short run, so I figured the battery had died over the winter months when the bike was used less often.
After pushing my machine to the local bike shop, (which was quicker than waiting for a recovery truck the cashier was surprised that he had a battery in stock for my CBR, and he was then even more surprised that it was the same battery which he normally puts in mopeds, and he replaced it with a "Rob Hunter MF KTZ7s" battery for around £45, I think I may have spotted some similar products on eBay for around £25.
Does anyone know whether it is important it is to have a high quality expensive battery in a 2009 CBR1000rr, or should a cheap battery be sufficient, I cannot help but keep wondering how much power the fan draws whilst waiting at railway gates etc etc.... and if there are differences in amperages for cheap versus expensive batteries, as I do not really know anything about this topic.
I have read about various bike battery maintenance/chargers including some solar powered versions, could that be a better answer, or should a decent battery be able to be left unused for a few winter months?
Please can anyone recommend a good value for money battery for the 2009 CBR1000rr8, or a good value for money bike battery maintenance/charger including any decent solar powered versions.
Thank you ever so much for your help with this......
Hi @Jambo1317 and welcome to the forum. I think it's hard to be sure how good a battery is, and depending where in the world you are is going to affect what options you might have. Your financial situation is going to impact that as well. But either way, you still want to verify that your bike is charging the battery while you're riding it. Use a meter to measure the battery voltage while the engine is running between 3k and 5k RPM's. Should be reading between 13 to 14.5 vdc. If you're not charging, then it won't matter what battery you have in it, it's going to die.
Many auto parts stores will check your charging system to if you don't have a meter.
2. test to see if you've got parasitc drain. After charging battery and taking bike for short-spin, stop it and immediately measure battery voltage. Then measure battery voltage every 4-hrs. Do this for 16-hrs, (5-readings total). What are these voltage readings??
Last edited by dannoxyz; Aug 19, 2022 at 06:32 PM.
Hi @Jambo1317 and welcome to the forum. I think it's hard to be sure how good a battery is, and depending where in the world you are is going to affect what options you might have. Your financial situation is going to impact that as well. But either way, you still want to verify that your bike is charging the battery while you're riding it. Use a meter to measure the battery voltage while the engine is running between 3k and 5k RPM's. Should be reading between 13 to 14.5 vdc. If you're not charging, then it won't matter what battery you have in it, it's going to die.
Many auto parts stores will check your charging system to if you don't have a meter.
2. test to see if you've got parasitc drain. After charging battery and taking bike for short-spin, stop it and immediately measure battery voltage. Then measure battery voltage every 4-hrs. Do this for 16-hrs, (5-readings total). What are these voltage readings??
Flat battery - 2009 CBR1000rr8
