Almost every home battery sold in Australia today is lithium-based. The main difference comes down to the exact lithium chemistry, and the mainstream choice now is lithium iron phosphate, known as LFP or LiFePO4, valued for safety and long life.
The types used in home storage today
- Lithium iron phosphate (LFP / LiFePO4). The mainstream choice. Runs cool, very safe, long cycle life. Used by most modern batteries including the Tesla Powerwall 3 and BYD Battery-Box.
- Lithium NMC (nickel manganese cobalt). Energy-dense and compact, used in some batteries and many EVs. Reliable, though LFP has taken over much of home storage.
What is coming next
- Sodium-ion. Uses cheap, abundant sodium instead of lithium. Promising for cost and safety, but still early for home storage.
- Solid-state. Replaces the liquid electrolyte with a solid one for higher density and safety. Exciting, but years away from mainstream home use.
These are worth watching, but there is no reason to wait. The lithium batteries available now are proven, warrantied for 10 years, and eligible for the federal rebate. Waiting mostly means missing rebates that keep stepping down.
So which should you choose?
For nearly every Australian home, an LFP battery from a reputable brand is the right call today. The bigger decisions are capacity, backup and warranty, covered in how to choose the best solar battery, and the after-rebate price, covered in solar battery cost.