BYD's Battery-Box Premium comes in two modular high-voltage ranges for Australia: HVS, 5.1 to 12.8 kWh usable in 2.56 kWh modules, and HVM, 8.3 to 22.1 kWh usable in 2.76 kWh modules. Both need a separate compatible hybrid inverter.
BYD Battery-Box Premium HVS and HVM: specs and warranty
| Spec | Value | Source |
|---|---|---|
| Category | Home battery | n/a |
| Headquarters | China | n/a |
| HVS | 5.1 to 12.8 kWh usable, 2 to 5 modules of 2.56 kWh | BYD, Battery-Box Premium HVS and HVM datasheet (Australia) |
| HVM | 8.3 to 22.1 kWh usable, 3 to 8 modules of 2.76 kWh | BYD, Battery-Box Premium HVS and HVM datasheet (Australia) |
| Parallel towers | Up to 3 identical towers: 38.4 kWh (HVS) or 66.2 kWh (HVM) | BYD, Battery-Box Premium HVS and HVM datasheet (Australia) |
| Inverter | None built in: needs a compatible high-voltage hybrid inverter | BYD, Battery-Box Premium HVS and HVM datasheet (Australia) |
| Warranty | 10 years, conditions in BYD's limited warranty letter | BYD, Battery-Box Premium HVS and HVM datasheet (Australia) |
How much does the BYD Battery-Box Premium HVM cost in 2026?
| Installed price, before rebates (gross) | $14,009-$16,009 |
| Federal Cheaper Home Batteries rebate now | −$3,687 (93 STCs on 13.8 kWh usable, CER) |
| After the federal rebate (net) | $10,322-$12,322 |
Price source: Solar Choice, average installed cost of popular batteries (incl. federal rebate). Add a compatible hybrid inverter if your system isn't battery-ready. The battery factor steps down to 5.7 STCs per kWh on 1 January 2027, which cuts the rebate on this battery by about $594. NSW and WA households may stack a state incentive on top: see the battery rebate by state.
Federal rebate by BYD Battery-Box Premium HVS and HVM size
| Configuration | Usable kWh | STCs | Rebate now | From 1 January 2027 |
|---|---|---|---|---|
| HVS 5.1 | 5.1 | 34 | $1,348 | $1,150 |
| HVS 7.7 | 7.7 | 52 | $2,062 | $1,705 |
| HVS 10.2 | 10.2 | 69 | $2,736 | $2,300 |
| HVS 12.8 | 12.8 | 87 | $3,450 | $2,855 |
| HVM 8.3 | 8.3 | 56 | $2,220 | $1,864 |
| HVM 11.0 | 11 | 74 | $2,934 | $2,458 |
| HVM 13.8 | 13.8 | 93 | $3,687 | $3,093 |
| HVM 16.6 | 16.6 | 105 | $4,163 | $3,489 |
| HVM 19.3 | 19.3 | 116 | $4,599 | $3,846 |
| HVM 22.1 | 22.1 | 128 | $5,075 | $4,243 |
Capacities from BYD, Battery-Box Premium HVS and HVM datasheet (Australia). The rebate pays 6.8 STCs per usable kWh on the first 14 kWh, 60% of that from 14 to 28 kWh and 15% from 28 to 50 kWh (Clean Energy Regulator, Solar batteries), valued here at a $39.65 STC price. These are rebate amounts only, not installed prices.
Key features
- Modular: HVS from 5.1 to 12.8 kWh, HVM from 8.3 to 22.1 kWh usable
- Up to three identical towers in parallel: 38.4 kWh (HVS) or 66.2 kWh (HVM)
- LFP cells, 10-year warranty
Things to check before you buy
- No inverter built in: it needs a compatible high-voltage hybrid inverter
- BYD notes usable energy can vary with the inverter brand
- Warranty conditions are in BYD's limited warranty letter; ask for it with your quote
Who it suits
Homes with, or planning, a compatible hybrid inverter that want to start with a smaller battery and add modules later.
Other battery brands we cover
| Battery | Usable capacity | Installed price (sourced) | Warranty |
|---|---|---|---|
| Tesla Powerwall 3 | 13.5 kWh per Powerwall 3 | $16,702-$17,251 (13.5 kWh) | 10 years |
| sonnenBatterie 12 and Evo | 9.4, 18.8 or 28.2 kWh usable (1 to 3 modules) | $14,076-$15,876 (10 kWh) | 10 years or 10,000 cycles |
| Fox ESS EQ4800 | 9.32 to 41.93 kWh (2 to 9 modules in series) | $9,500-$11,000 (10 kWh) | 10 years |
| Alpha ESS SMILE5 | SMILE-BAT-13.3P: 13.34 kWh usable, 100% depth of discharge, LFP | $12,817-$14,817 (13.3 kWh) | 5-year product, 10-year performance (battery) |
| Sigenergy SigenStor | SigenStor BAT 5.0, 6.0, 8.0 and 10.0, warranted at 5.2, 6.0, 7.8 and 9.0 kWh usable | $15,973-$17,973 (15.6 kWh) | 10 years (15 with a paid extension) |
| Enphase IQ Battery 5P | 5.0 kWh per unit | No sourced price yet | 15 years / 6,000 cycles |
Ranked lists with stated criteria are on best home batteries, and every price band we can source is on the battery price guide.
Common questions about BYD
How much does the BYD Battery-Box Premium HVS and HVM cost in 2026?
$14,009-$16,009 fully installed before the federal rebate (Solar Choice, average installed cost of popular batteries (incl. federal rebate), checked 9 September 2026). The rebate on its 13.8 kWh usable is about $3,687 today, so roughly $10,322-$12,322 after it, before any state incentive.
How much is the battery rebate on the BYD Battery-Box Premium HVS and HVM?
About $3,687 for 13.8 kWh usable: 93 STCs (6.8 per kWh on the first 14 kWh) at a $39.65 STC price. From 1 January 2027 the factor drops to 5.7, which cuts it by about $594. Your installer applies it at point of sale.
What warranty does BYD give?
10 years (conditions apply) (BYD, Battery-Box Premium HVS and HVM datasheet (Australia), checked 10 October 2026). Read the warranty document for the exact model you're quoted: conditions such as registration, cycles or capacity retention vary.
Where is BYD based?
BYD is headquartered in China. Ask your installer where the stock they're quoting was made, as manufacturing locations vary by product line.
Want BYD Battery-Box Premium HVS and HVM on your roof?
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