Yuasa YUAM6212B YT12B-BS Battery

• 12 Volt, 10 amp-hour, 215 cold cranking amps, maintenance-free battery
• Totally sealed and spill-proof - all acid is absorbed in special plates and absorbed glass mat separators
• No need to ever add water
• Advanced lead-calcium technology hold its specific gravity more than 3 times longer than conventional batteries
• Battery supplied dry with acid bottle

Replaced the Battery on my Triumph Bonneville 2009 EFI. This is the exact same as came stock. And it cranks nicely! I didn't even realize that my previous battery wasn't cranking so great until I replaced it.

From what I hear when they switched to EFI from carbs the battery got smaller to make room for the ECU. So every Bonnie, Scrambler, and Thruxton from 2009,2010 and possibly 2011 have this (smaller) battery YT12B-BS.

I hear that they increased the size on the 2012 and some of the 2011... to the standard 12-BS instead of the 12B-BS.

Almost every website (i'm looking at you amazon!)has this info wrong and assumes that '09,'10 have the same battery as previous years and the current year. Including the Yuasa US website!!!

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Initially thought that I would not know what to do with adding the acid, but it was really easy. The battery came dry and all you have to do is follow instructions to add the acid. It was very safe to perform and after sealing it I waited a few minutes and installed the battery right away. I have a 2004 Yamaha FZ 6 and it started on my first try. Excellent product and I'm pleased with the purchase.

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After I received this battery I followed all directions added the electrolyte, charged the battery completely, then installed it to my motorcycle. I turned the key and there was no power. If I test the battery with the key off it shows up as fully charged and ready to go. Turn the key and it drops to zero. I have had two different mechanics test the battery and they have both told me it is a bad battery. I know that there is bound to be a bad one show up every now and then, just sad that I had to be the recipient.

On the plus side, Amazon was very apologetic and have shipped me a replacement free of charge. I will update my review when I receive the new battery. Assuming it works.

UPDATE: The new battery works great! I would have changed my original one star rating to five stars, but I have to dock one star for the first dud battery.

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Much more cranking power than gel batteries. Easy to get the acid in the battery. Charge and go. Keep going!

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The Battery was a Direct replacement for my 07 ZX10R..

Fit was great, Easy instructions all went well, Thanks all .. :)