BYD Battery Review
mid-rangeBYD is the world's largest battery manufacturer (they also make EVs and buses). Their HVS/HVM home battery range is modular, letting you start small and add capacity later for roughly $440 per kWh in expansion modules. A popular pick with New Zealand solar installers for its flexibility, competitive pricing, and proven reliability.
$9,000-$19,500
Installed price range
10 years
Warranty period
China
Country of origin
3
Products available
BYD Battery Models
Prices are NZD installed, GST inclusive, indicative June 2026. Specs are indicative - confirm current models with your installer.
| Model | Capacity | Peak Output | Continuous | Chemistry | Weight | Backup | Price |
|---|---|---|---|---|---|---|---|
| BYD HVS 5.1kWh | 5.1kWh | 5kW | 5kW | LFP | 56kg | Yes | $9,000-$11,000 |
| BYD HVM 11.0kWh | 11kWh | 11kW | 11kW | LFP | 124kg | Yes | $11,500-$14,000 |
| BYD HVM 22.1kWh | 22.1kWh | 16.6kW | 16.6kW | LFP | 248kg | Yes | $16,000-$19,500 |
Warranty Details
Duration
10 years
Cycle life
6,000 cycles
Capacity retention
60% at end of warranty
Pros
- Most flexible modular system (2.5kWh increments)
- World's largest battery manufacturer
- Competitive pricing per kWh
- Compatible with most solar inverters (Fronius, SMA, GoodWe)
- LFP chemistry
Cons
- Requires separate hybrid inverter
- Not as polished an app as Tesla
- Multiple units needed for larger capacity adds complexity
- Brand less recognised by consumers vs Tesla
Compare BYD with Other Brands
Frequently Asked Questions
How much does a BYD battery cost in New Zealand?
A BYD battery costs $9,000-$19,500 fully installed in New Zealand, GST inclusive (indicative June 2026). There is no government battery rebate here. Bank green home loan top-ups at about 0-1% promo rates are the main way to spread the cost, and battery prices are falling 10-15% a year.
What warranty does BYD offer?
BYD offers a 10-year warranty or 6,000 cycles (whichever comes first), guaranteeing at least 60% capacity retention.
Is BYD a good battery for New Zealand homes?
BYD is homeowners wanting flexibility to start small and expand, or those with existing solar systems. BYD is the world's largest battery manufacturer (they also make EVs and buses). Their HVS/HVM home battery range is modular, letting you start small and add capacity later for roughly $440 per kWh in expansion modules.