How to check a battery brand before you buy.
Every year brings new battery names into Australia at prices that undercut the established ones. Some are fine. Some vanish. Here is the five-minute check that tells you which is which — using public records anyone can search, no industry contacts required.
Written by Juan Flinn, Content Editor · Reviewed by the Mission Green Energy Team · Updated August 2026
Four public records that tell you most of it.
A ten-year warranty is a ten-year bet on the company behind it. These are the checks we run before we agree to fit anything, and you can run all of them yourself.
1. Find out how old the Australian entity actually is
Search the brand on ABN Lookup. You get the registered company name, ABN, entity type and the date it became active. Marketing copy often quotes a founding year belonging to an overseas parent — the ABN tells you how long there has been an Australian company to make a claim against. If the entity is two years old and the warranty is ten, that is worth knowing before you sign, not after.
2. Confirm the exact model is approved
The Clean Energy Regulator publishes the approved battery and inverter registers. Search the exact model number from your quote — not the brand, the model. Note the usable capacity listed there, because that is what the federal rebate is calculated on and it is usually lower than the brochure figure. Also check the expiry date; approvals lapse.
3. See whether anyone has actually lived with it
Search the brand on SolarQuotes, Solar Choice, ProductReview and the Whirlpool forums. You are not looking for perfect scores — every brand has unhappy customers. You are looking for whether a body of real-world experience exists at all. A brand with no reviews is not necessarily bad, but it is unproven, and that is a different kind of purchase.
4. Check the battery and inverter are an approved pair
Inverter manufacturers publish compatibility lists, and they are closed lists — using an unlisted battery typically voids the inverter warranty, and sometimes the battery warranty too. If your quote pairs brands, ask the installer to show you both manufacturers confirming the combination in writing.
What should make you
slow down.
- A founding date you cannot trace. If the website says "since 2008" and the ABN says 2023, ask who the 2008 entity is and where it is registered. A straight answer is fine. No answer is the signal.
- Capacity quoted as nominal only. If a quote gives you a headline kilowatt-hour figure and no usable figure, you cannot verify the rebate. Ask for the CEC-listed usable capacity in writing.
- No warranty document, only a warranty number. "10-year warranty" is a marketing line until you have read what it covers, what voids it and which entity honours it. Ask for the PDF before the deposit.
- Pressure tied to a rebate deadline. Rebates do step down, but a genuine installer will tell you the actual date and let you check it. Urgency without a verifiable date is a sales tactic.
- An installer who will not name the alternatives. If a company only fits one brand, its recommendation and its stock position are the same thing.
None of these individually means a product is bad. Several together mean you should take the extra week.
A new brand is not
automatically a bad one.
Every established brand was unproven once. Sungrow, GoodWe and BYD all arrived in Australia as unfamiliar names at aggressive prices. The point of the checks above is not to rule out newcomers — it is to make sure that when you take that bet, you are taking it knowingly and being paid enough for it.
What a discount buys
A new entrant discounts to get installed and reviewed. That is rational, and the saving is real. Just price the risk rather than ignoring it.
Who carries the risk
Your installer coordinates the manufacturer warranty. A good one stays accountable regardless of brand — ask what happens if the manufacturer exits Australia.
How long you will stay
Planning to move in three years? Track record matters less. Staying fifteen? It matters more than the price gap.
Your questions,
answered.
Run four public checks. Search the brand on ABN Lookup to see how old the Australian entity is. Search the exact model on the Clean Energy Regulator's approved register and note the usable capacity and expiry date. Search SolarQuotes, Solar Choice, ProductReview and Whirlpool for independent reviews. And check the inverter manufacturer's compatibility list confirms the pairing.
A 10-year warranty is a claim against a company. Marketing copy often quotes a founding year that belongs to an overseas parent, while the Australian entity that would actually handle your claim may be much newer. ABN Lookup shows the registration date in seconds.
Nominal is the headline figure on the brochure. Usable is what you can actually draw, and it is the figure listed on the CEC approved battery register. The federal rebate is calculated on usable capacity, so quotes compared on nominal figures are not comparable.
Not automatically — every established brand was unproven once. But it is a different kind of purchase, and you should be paid for the risk in the price. Weigh it against how long you plan to stay in the home and what your installer commits to if the manufacturer exits Australia.
Inverter manufacturers publish closed compatibility lists. Using an unlisted battery typically voids the inverter warranty and can void the battery warranty too. Ask your installer to show you both manufacturers confirming the specific combination in writing before you pay a deposit.
Once the brand
checks out.
Sizing is the next decision, and since 1 May 2026 it is less obvious than it used to be — the federal rebate is tiered, with a cliff at 28 kWh usable. Our battery sizing guide walks through it, and the rebate checker lists every current federal and state incentive with its official source.
If you want the whole thing modelled against your actual bill, book a free assessment. We fit around 16 brands and we will tell you when the honest answer is the one we do not stock.