Redflow executive chairman Simon Hackett owns three Tesla cars but when it comes to home batteries he believes he can go one better than the Californian car maker.

His company's ZCell home battery using zinc-bromide "flow" technology performed better than the lithium-ion systems dominating the market, he said.

Redflow executive chairman Simon Hackett has Redflow batteries installed in his business park in Adelaide. Credit:David Mariuz

"This is one that's going to work for you in the house – the harder you work ours the happier it is," he said. "Everyone else is just taking the same sort of lithium batteries and repackaging them."

Flow technology involves storing electricity in liquid electrolytes, rather than in electrodes, as lithium-ion does. Two separate tanks of liquid are pumped past a membrane held between two electrodes, producing an electric current.