Amazon.com: lithium battery solar
12V 100Ah lithium iron LiFePO4 Battery For EV, Car Audio System, Solar system, Electric boat, RV, Camping, Light Weight Small size (Compare with lead acid battery) Contain 4S 3.2V 100Amps Batteries. 4.3 out of 5 stars 7. $580.00 $ 580. 00. $109.23 shipping. Usually ships within 6 to 10 days.