Alpha-ESS - Battery Reviews

About Alpha-ESS

AlphaESS is a Chinese battery manufacturer founded in Nantong City, Jiangsu Province, in 2012. They have four manufacturing centres in China and one in Malaysia. They state they employ over 1,000 people and their batteries have been sold in over 140 countries and regions. A quick online search in October 2026 found evidence of AlphaESS installations in around 33 separate countries.

AlphaESS opened an Australian subsidiary in 2015 and has been supplying home batteries here ever since. For a period, starting in 2019, they assembled a number of battery systems in Adelaide because the state government provided a poorly thought-out subsidy. 

Australian Office Contact Details

AlphaESS has had an Australian office since 2015, and its current location is in Homebush West in Sydney. Contact details are:

AlphaESS Office: 31 Richmond Road, Homebush West, NSW 2140

Phone: 02 9000 7676

Email: [email protected]

Technical support & warranty email: [email protected]

AlphaESS Batteries

AlphaESS makes a wide range of lithium iron phosphate (LFP) home batteries, a chemistry popular for its durability and low cost. Most AlphaESS systems have a built-in hybrid inverter, allowing solar panels and the battery to share the same inverter. The company also offers AC-coupled batteries that can generally be added to an existing solar system without replacing its inverter.

Alpha ESS offers single-phase systems with inverters up to 10 kW, while its three-phase SMILE-G3 range includes 5, 10, 15, and 20 kW models. Storage capacity depends on the battery modules selected. The newer M-series includes 13.99 kWh modules that can be combined to provide 27.98 kWh of storage. Many AlphaESS systems can also provide backup power during blackouts, provided they're installed and configured for it. 

AlphaESS Warranty

AlphaESS used to provide a 10-year battery performance warranty, but only a 5-year warranty on the electronics in many of its SMILE systems. 

For the models covered by its revised Australian warranty, installed from 1 November 2024, AlphaESS increased the product warranty to 10 years. The battery performance warranty also runs for up to 10 years and guarantees at least 70% of usable battery capacity, but is subject to a throughput limit of 3,120 kWh discharged for each kWh of usable battery capacity. At one full cycle per day, this limit would be reached after approximately 8.5 years.

The warranty requires installation by an appropriately accredited installer with a valid AlphaESS Installer ID.

Warranty conditions vary with the model and installation date, so buyers should check the warranty covering their particular system.

As for how strong the warranty backing is, we're aware of a situation where an Australian customer battled for months with AlphaESS over a Storion OF5 warranty claim, which resulted in the owner sending a letter of complaint to the ACCC and Office of Fair Trading. 

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