BYD Battery: An Independent Review by Solar Choice

Note: Solar Choice is not affiliated with BYD or any other battery manufacturer, so our reviews reflect an unbiased assessment of information on their products.

At a Glance: BYD Batteries score 3.1 out of 5

Scoring is based on our solar battery scorecard which is consistently applied to each brand and battery available on the Australian market. This scoring reflects BYD’s residential LV and HV series models.

$$ Price: Based on data from Solar Choice’s network of solar installers, the average price for an installed BYD battery is $1,002 per usable kWh before any rebates deducted. This places it in the lower price category.

• Company Backing and Trustworthiness (5 out of 5): BYD has had an active presence in the Australian market since 2013 and is a well-diversified company operating globally in EVs, battery storage, and electronics. They have more than 100 staff in Australia and an established office.
• Warranty Offer (3 out of 5): The warranty includes a throughput allowance of 3 to 3.09MWh per usable kWh and a degradation guarantee of 70% after 10 years, paired with a 10-year product warranty.
• Customer Reviews (4 out of 5): Based on verified reviews through Solar Choice’s independent platform, BYD has received strong positive feedback with an average rating of 4.45 from 22 customer reviews. According to our review scoring framework, this earns a score of 4 out of 5.
• Functionality (1 out of 5): BYD batteries are stackable, are not able to be AC connected without installing a separate hybrid inverter. They also are rated at IP55, have no built-in fire suppression or thermal management, and lack modular battery balancing. These limitations reduce their flexibility and future-proofing potential.

Please note that the Solar Choice score card reflects our opinions only. Customers are encouraged to do their own research. Uncover essential details in the comprehensive guide below and find out what you need to know before you buy.

Overview of BYD – Company History

BYD Co Ltd was founded in 1995 in Shenzen, China, and is a manufacturer of automobiles, battery-powered bicycles, buses, forklifts, solar panels, rechargeable batteries (varied inc. bulk-storage from renewable energy) and trucks. After more than 20 years of fast growth, the company has established more than 30 industrial parks worldwide and has played a significant role in terms of development from energy generation and storage to its applications. BYD is listed on the Hong Kong and Shenzhen Stock Exchanges, with revenue and market capitalization each exceeding RMB 100 billion. The company employees over 220,000 people at sites all around the world.

BYD is the world’s leading producer of rechargeable batteries: NiMH batteries, Lithium-ion batteries, and NCM batteries. BYD owns the complete supply chain layout from mineral battery cells to battery packs. These batteries have a wide variety of uses including consumer electronics, new energy vehicles, and energy storage.

Despite their size, many people have not heard of BYD especially as it gets quite overshadowed by Mr. Elon Musk and their US competitor, Tesla. Although it should be noted that not only to BYD produce many more batteries than Tesla but also did produce more electric cars right up until late 2019.

Furthermore, Warren Buffet is also a backer of BYD, and they also been busy building electric buses in Australia!

BYD Battery Range and Options

The B-Box comes in high voltage (HV) and low voltage (LV) – with the B-Box LV Residential the most popular energy storage device BYD cells.

It comes in four different sizes – 2.56kWh (2.45kWh usable), 5.12kWh (4.9kWh usable), 7.68kWh (7.35kWh usable), and 10.24kWh (9.8kWh usable). All four variants are IP55 rated and modular – meaning depending on the case you purchase you will be able to start small and upgrade if need be. You can get a total capacity of 57.5kWh which would work for light commercial usage.

How Much Does a BYD Solar Battery Cost?

BYD batteries are considered to have some of the sharpest prices in the market. Battery-Box Pro consists of the battery modules B-Plus L 2.5 with 2.56 kWh usable capacity each. Up to 4 B-Plus modules can fit into one cabinet.

Batter-Box Pro 13.8 has a usable capacity of 13.8 kWh per battery rack. Please note that the below indicative pricing does not include installation costs:

Whether a BYD Solar Battery is a cost-effective product for your system will depend on a closer examination of your electricity needs. To see if home solar battery storage is worth it, our detailed Solar Battery Sizing and Payback calculator to see the financials for your system

BYD B-Box LV Residential Limitations

 The main con for the BYD Battery Box is that they are quite large and clunky, making the battery system seem a bit obtrusive. The optimal temperature range also makes the B-box a less-than-ideal option for extreme climates.

They will also need a compatible hybrid inverter to work. There are several compatible converters currently including SMA, GoodWe, SolaX, and Victron. The correct inverter will allow DC coupling to solar and backup power during blackouts.  It can also be AC coupled, although this makes backup a lot more complex.

Federal Battery Rebate Applies to BYD Batteries

As of 1st of July 2025, there is a federal battery rebate which can reduce the cost of installing a battery by around 30%. For example, based on our federal battery rebate calculator a BYD Battery Box Premium HVM 13.8 battery would receive a rebate of approximately $4,620.

This rebate can be paired with the state battery rebate in WA and the NSW VPP Rebate.

BYD’s Warranty Offer For Australian Customers

BYD supplies a 10 year warranty for their batteries which covers defects in materials or workmanship. This is commonly referred to as a ‘product warranty‘ in the solar industry.

They also provide a ‘performance warranty‘ which guarantees that their battery will still retain 70% of its nameplate usable energy after 10 years or if it throughputs a minimum amount of energy (whichever comes first). The minimum through-put in their warranty document works out to be around 3 MWh per kWh of usable energy, which would give you approximately one full cycle per day for 8 years.

In general this warranty is pretty typical of what we see offered from Chinese battery manufacturers, while some guarantee a higher percentage of retained usable energy after 10 years.

BYD have a local office in Australia to support customers seeking assistance, which is a important. Without a local office and support staff, customers can be stranded trying to contact overseas manufacturers when things go wrong.

See BYD’s full warranty document here.

Pros and Cons of BYD Batteries

Conclusion – Are BYD Batteries Good Quality?

BYD are now best known for their electric vehicles, however they have been building solar batteries for a very long time. They have a great flexible range from as small as 4.0kWh upwards for smaller systems. The ability to stack the low voltage solutions all the way to 983kWh before you reach the “cap”. This means their batteries can cater to all scale residential project and mid-scale commercial projects.

BYD offers a cost-effective and flexible solution from a large reputable manufacturer and as batteries become more and more popular, they look set to further increase their presence throughout Australia.

Read more product reviews from Solar Choice

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Ryan Xiao

Ryan is a graduate of the esteemed Photovoltaics Masters program at the UNSW and has a bachelor degree in Automotive Engineering. He has developed solar and battery business cases for 100s of Australian companies across large variety of use cases and has a detailed knowledge of the solar products available on the market.

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