2013 Drake Smith - Please do not use or reproduce this elsewhere.  Feel free to link to it though.

K Bike Batteries

Early K bikes came with a "full-sized" battery compartment. 1994 and later K1100s came with a "half-sized" battery compartment.

Two of the more popular batteries among K bike owners are the WestCo 12V30 (full-sized) and the Odyssey PC680 (half-sized.)

I recently decided to save some money and weight by trying out a Big Crank ETX15L sealed "no maintenance" AGM battery and it's been working just fine in my K100.  It cost me $71.95 shipped from Battery Mart.  It weighs only 11.5 pounds vs. the 23 pounds of a 12V30 or 15 pounds of a PC680.

It is shorter than the K bike battery compartment so in order to hold it down I flipped over the battery hold down bracket and placed a 1/8" thick rectangle of rubber between the bracket and the battery.  The threads on the hold down bolts were not long enough but I overcame that by adding four M6 washers under the head of each bolt.

Note that, given its dimensions, it will not work in a 94-on K1100, only K bikes with the larger battery compartment.

As mentioned, it seems to be working fine in my non-ABS K100.  Given that K bike ABS control units can be sensitive to low voltage and fault, the ETX15L may or may not have adequate power for an ABS equipped K bike.  However, my hunch is that it would.  If you try this battery in an ABS K bike, then please send me an email with your results and I will update this page.

2013 Drake Smith - Please do not use or reproduce this elsewhere.  Feel free to link to it though.