Informatica Nanowire Batteries: The Next Step in Battery Evolution 7 Giugno 2016 admin Lithium-ion batteries currently reign supreme in their ability to hold a large amount of energy per weight, though they have rather complex charging requirements. Utilizing gold nanowires, a battery was created by researchers at UC Irvine that was able to reach 200,000 discharge cycles with a 94-96% charge storage efficiency. This is unprecedented with lithium-ion batteries as they typically only last about 500+ charge cycles.