Just a note - from their website - regarding rechargeability. So I think this means they are on par with lithium when it comes to rechargabitiliy.
"The breakthrough at NantEnergy is the discovery of enabling zinc to retain its charge for prolonged periods of time, as well as repeating the cycle of charge and discharge over 1,000s of repeated cycles without deterioration."
CZL Price at posting:
2.4¢ Sentiment: Hold Disclosure: Held