Types of Solar Battery
1) Lead acid
Boring perhaps. Ugly definitely. But also dependable, tried and tested. Lead acid batteries have been taking Aussies off-grid for decades. But they are rapidly being eclipsed by other technologies with longer warranties and lower pricing as solar battery storage becomes more popular.
Lithium-ion batteries are coming on leaps and bounds as the electric car industry drives their development. Spearheaded by the brilliantly marketed Tesla Powerwall, Lithium-ion batteries are looking to become the most popular choice for on-grid solar battery storage.
Flow batteries are a relatively new entrant to the battery storage marketplace (though their technology has been around for many years).
They are called flow batteries because they have a water based solution of Zinc-Bromide sloshing around inside them. At the moment only a few companies are producing flow batteries for the residential market, the most prominent of which is Redflow, an Australian-based flow battery company that outsources battery manufacture to China.
4) Aqueous Hybrid Ion (aka Salt Water Batteries)
Another new entrant to the battery storage marketplace are the Aqueous Hybrid Ion batteries from Aquion Energy that somehow use not much more than salt water to store electricity. These battery stacks offer a range of environmental and safety benefits over other competing battery storage technologies.
5) Sodium Nickle Chloride
Sodium nickle chloride technology is yet another competitor to the dominant lithium-ion technology. In Australia, GridEdge is producing their Quantum battery which, like the Aquion, offers a range of environmental and safety benefits due to its unique battery chemistry.