Battery

My Street Triple is almost 5yrs old now and in the colder months the battery was struggling a bit so I'm thinking of changing the battery. Are there any reasonable lighter batteries worth going for? I use the bike a lot between now and October for work and other things.

EB9-4 Leoch Powerstart AGM Motorcycle Battery LT9-4 1 £20.28 including P&P.

Just bought above from Tayna batteries on line for my 2012 street triple.

That's a great price, and the Leoch battery on my little bike has performed well despite a lot of neglect, but you can get batteries in the same size with notably more cranking amps.
With the Ducatis, I've always gone for Yuasa, as a few more amps always helps.

Lithium batteries are good, but I'm in no rush to trust one with Italian charging designed for lead/acid.