Reviewed 2026-07 · Document iStore PV Products Warranty and Service Conditions, March 2026
Fair
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
70%
Capacity at end of term
Parts only
Coverage
Capacity guarantee: minimum retained at year 10
Rated capacity (reference)Guaranteed floor: 70.0% 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
Battery term: 10 years
Performance limit
Materials, fabrication and workmanship
Replacement hardware and return postage
What voids or limits it
Monitoring and installation timing
Delayed fault reporting or prolonged inactivity
Installation, maintenance and modification
Installer rebate is discretionary
How to claim
Submit an RMA through iStore support with proof of purchase and product details. Full summary, conditions and sources: page 2.
The terms name IS-BATT-5000-ES, IS-BATT-5000-BMS and the 5, 10 and 15 kWh S0 systems.
Performance limit
The S0 performance warranty ends at 10 years or 18.25 MWh discharged at 70% end-of-life capacity, whichever occurs first.
What’s covered
Materials, fabrication and workmanship
iStore states that covered battery hardware will be free from defects in material, fabrication and workmanship during the applicable period.
Replacement hardware and return postage
After an accepted RMA, iStore provides replacement hardware and covers postage for return of the defective device within the stated return window.
Exclusions
Monitoring and installation timing: The battery must remain connected to iStore monitoring and be installed within 31 days after purchase.
Delayed fault reporting or prolonged inactivity: Battery faults must be reported within two weeks; cell damage from prolonged periods without charging or cycling is excluded.
Installation, maintenance and modification: Unlicensed work, failure to follow the manual, insufficient ventilation, missed maintenance, software non-compliance and enclosure alteration are excluded.
Installer rebate is discretionary: The published AUD 150 replacement rebate is paid only to verified installers or retailers and remains at iStore's discretion, so full labour cover is not guaranteed to the owner.
Transferability
The published Australian terms do not state a property-owner transfer process. A subsequent owner should ask iStore to confirm the remaining cover in writing.
How to make a claim
Submit an RMA through iStore support with proof of purchase and product details. Accepted battery hardware is targeted for shipment within 20 days, and the defective unit must be returned in the replacement packaging within 15 business days.
Source reference
DocumentiStore PV Products Warranty and Service Conditions