[palace15]

Does anyone know of a more powerful battery, cranking amps and all that for my C5, and would any that fit the C5 automatically fit any other UCE model?

[motorat]

the battery from a klr650 is the same size as the one in the c5.

i had an old one laying around and put it next to the c5. i will be getting an agm batery probubly next year.

[swingarm]

I've replaced the stock C5 battery with an MB12U rated at 15AH from these guys http://www.motobatt.com/

It's almost same width and height (without supplied bottom spacer), and about 8mm narrower than standard which places the positive terminal nicely away from the throttle body. I used the stock terminals but it would be a bit neater to replace them.

My old battery was in reasonable shape. The new AGM battery really swings things over.

[TWinOKC]

I like this one, free shipping, fit is good.  Much better than the original.

http://www.batterystuff.com/powersports-batteries/sYTX14AHL-BS.html