While Ecoult is putting $4 million in ARENA funding to good use to test its UltraBattery under the harsh conditions of India’s diesel-saturated electricity supply system, the company has released a terrific little video which explains the technology in its lead-acid powerhouse.

The battery revolution has a long way to go and it’s anyone’s guess which technology will achieve market dominance in the years ahead, but simple explanations like this one will go a long way in explaining the benefits of storage to consumers and policymakers.