In these researchers’ tests, their gold nanowire battery quality declined 5% after 200,000 recharge cycles.Currently, one of the many problems with the rechargeable lithium battery technology that smartphones use, is that the materials on the inside become corroded and then fail to last a long time.Batteries in discarded electronics continue to pile up due to society’s technological demands. It’s been long-theorized that nanowire might help increase longevity, as their high surface area can hold an electric charge.