Reviewed 2026-07 · Document Australian HVS/HVM Limited Warranty V1.1
Very good
Guarantee & backbone
About this document
review.solar’s plain-language summary of the manufacturer’s warranty terms as at the review date. Not a legal instrument: verify current terms with the manufacturer before making a claim.
10yr
Warranty period
60%
Capacity at end of term
Parts only
Coverage
Capacity guarantee: minimum retained at year 10
Rated capacity (reference)Guaranteed floor: 60.0% at yr 10
No year-by-year capacity schedule is published for this product - the manufacturer guarantees only this end-of-term minimum, not a specific decline curve.
The guarantee
Product warranty: 10 years
Performance warranty: time or throughput
Repair, replacement or partial refund
Subsequent owners
What voids or limits it
Installation and compatible inverter conditions
Temperature and prolonged inactivity
External damage and unauthorised work
Labour and travel not promised
How to claim
Report the claim in writing to BYD's authorised Australian service partner, Alps Power, with the invoice, installation date, configuration, serial numbers, inverter details, firmware and error informa Full summary, conditions and sources: page 2.
The exact Australian warranty covers HVM 8.3 through HVM 22.1 against defects in materials or workmanship for 10 years from the defined warranty start date.
Performance warranty: time or throughput
Coverage ends when the product reaches 10 years or its model-specific minimum throughput, whichever comes first. HVM 8.3 is guaranteed to retain 60% usable energy up to 25.62 MWh.
What’s covered
Repair, replacement or partial refund
BYD may repair or replace the non-conforming product or parts at no charge, or provide a partial refund calculated under the warranty formulas.
Subsequent owners
The document covers the original buyer and a subsequent owner who acquires the product for their own use and provides proof of ownership.
Exclusions
Installation and compatible inverter conditions: Coverage can be lost where installation or operation departs from BYD documentation or the battery is used with an inverter absent from BYD's compatibility list.
Temperature and prolonged inactivity: Exposure above 50 C or below -10 C, or leaving the product unoperated for six months or more, is excluded.
External damage and unauthorised work: Transport damage, force majeure, movement after installation, and unapproved modification or repair are excluded.
Labour and travel not promised: The written remedy covers the non-conforming product or parts but does not promise installer labour, site travel, or removal and reinstallation costs.
Transferability
Transferable to a subsequent owner who acquires the installed product for their own use and can provide proof of ownership. The original term continues; it does not restart.
How to make a claim
Report the claim in writing to BYD's authorised Australian service partner, Alps Power, with the invoice, installation date, configuration, serial numbers, inverter details, firmware and error information. A non-warrantable inspection may be charged.
Source reference
DocumentBYD Battery-Box Premium HVS&HVM Limited Warranty - Australia
Version at auditV1.1, applicable to Australian installations from 1 December 2021