http://tinyurl.com/p87w6l3
Bioenno Power 12V, 10Ah Lithium Iron Phosphate (LiFePO4) Battery with Bundled AC-to-DC Charger
LiFePO4 Battery for Energy Storage, Electronics, etc.
Up to 2000 charge cycles at 100% capacity
High Power Output in small lightweight form factor
Maintenance free, built-in protection
2 year pro-rated warranty