Can figure out how to take off seats to get to battery to charge it.. on a 2001 triumph daytona 955i

Hi, I assume it's the main fuse to or from the battery? Check for a loose connection at the fuse holder. At each point of the wires opposite to the fuse. Also if it is a blade type fuse holder, it's possible that the fuse is loose.(not a good tight fit) An in line fuse

Check fuse or relay.

Put a voltage meter across the terminals, a good battery should read about 13v.

If it doesnt have a plug on it for a battery tender,then its best to just pull the battery and charge it overnight on a trickle (2amp) charge.

on the 955i Sprint its under the riders seat but on the Daytona i think its on the R/h side of the subframe if memory serves correctly

The owners manual can be downloaded at: http://www.manualslib.com/manual/538481/Triumph-Daytona-955i.html