UPDATE JULY 2023: Jinko has updated and improved the SunTank warranty, also retroactively applying it to existing installations. Good on them! The new warranty document is available here. Summary of changes below:
| Features | Old Warranty | New Warranty |
|---|---|---|
| Energy Retention | 70% for the first 5 years 50% for another 5 years |
60% for 10 years |
| Life Cycle or Life Cycle Power | Shouldn’t be over 300 per year | Total energy discharged from the battery reaches 3.05MWh per kWh usable capacity |
| Accessories Warranty Period | 1 year | 2 years |
| Warranty if not connected with Internet | 3 years | 5 years |
| Operating Temperature | -10 ~ +45 | -10 ~ +50 |
| Transferrable | No | Yes |
| Others | – | Applies to all previously sold systems |
Jinko Solar launched their Suntank low-voltage home battery in July 2022. This article is my opinion of its warranty. While it’s possible the battery could be good, I can tell you right now its warranty isn’t. [Read more…]










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