Alpha ESS batteries review.
Known for SMILE-G3 batteries.
#7 of 9 home battery brands
Also rated: Alpha ESS inverters (6.3)
- Founded
- 2012
- Headquarters
- Nantong, China
- Stock exchange
- Not listed
- Selling in Australia since
- 2016
- Series on the approved list
- 5
Our verdict
Is an Alpha ESS battery right for you?
Strong battery specs for the money, and expands past 50 kWh. Weigh that against mixed support feedback and a warranty that caps total throughput.
Rated 7.4/10, #7 of 9 brands we rate for batteries.
A good fit if
- You want lots of storage on a budget
- You may expand later
Maybe look elsewhere if
- You cycle the battery heavily every day
- Fast support matters more than price
What we like
Expands a long way
SMILE-G3 batteries go past 50 kWh.
Copes with heat
SMILE-G3 battery rated to 60°C.
Worth weighing up
Throughput cap
3,120 kWh per kWh; heavy daily use can end cover before 10 years.
Support reports
Mixed owner feedback on warranty handling.
What owners say.
4.6out of 5
From 675 owner reviews of Alpha ESS batteries on independent review sites.
Ratings as published on 8 October 2026. Some review sites invite or reward reviews, so we weight ratings by how many reviews sit behind them and pull small samples towards an average. We don't collect or edit these reviews.
How we rate Alpha ESS batteries.
7.4The same five parts for every brand. No brand can pay to change any of it. The full method
Product scores · 45%
9.4Best two series: SMILE-G3-BAT 9.8, SMILE-BAT 9.1
Owner reviews · 15%
7.94.6 stars from 675 owner reviews on SolarQuotes
Track record · 15%
7.010 years selling in Australia, not listed
Installer and market standing · 15%
0.0No placing in the 2025 or 2026 installer votes or SunWiz awards
Australian support · 10%
9.0Australian office, local phone, service email
Every Alpha ESS battery series.
Tap a series for why it scores what it does, its full specs, every version and the datasheet.
Commercial
Questions to ask your installer
- 1How much of my evening use will this cover?
- 2Does it include backup in a blackout, and for which circuits?
- 3Can I see the warranty document, including the throughput limit?
A good installer will be glad you asked, whichever brand you choose.
Australian support
- Office
- 8/15-21 Gibbes Street, Chatswood NSW 2067
- Phone
- 02 9000 7676
- techsupport@alphaess.au
Your installer is the first contact for a warranty claim. Use these if your installer has closed.
Recalls and known issues
No recalls on the ACCC Product Safety register for Alpha ESS batteries, checked 6 October 2026.
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