At the American International Motorcycle Expo in Orlando a few weeks ago I picked up a Micro Start Battery kit from antigravity batteries as shown here
http://antigravitybatteries.com/microstart/. This thing is amazing. It will fit in your shirt pocket but puts out 200 amps and it can jump start my TRUCK about 5 times on a single charge. ??? My little old S10 motor would be no challenge. It also comes with USP adapters to allow you to charge cell phones and other USB type gear. I carry it in the bottom of my side case for emergencies, both for my self and others. The whole kit with charger and cables fits in a box about 4" by 5" by 1.5" and weighs 14 oz. The kit was around $125. Having had several batteries die on me, I feel this is cheap insurance.
I haven't put a Lithium battery in my S10 yet but after my experience with the Shorai in my DR-650, there is no question that one is going in the S10 when a new battery is needed.