JouleSpecs does not sell and does not show shop prices: check the price where you buy.
Jackery SolarVault 3 Pro Max combines a bidirectional inverter and a lithium iron phosphate battery in a single body, with four independent MPPTs for the solar inputs and charging from the home grid. Toward the home it feeds in within the simplified threshold for plug-in systems; with verification by a licensed electrician and a request through the app it can go higher.
The battery expands by stacking up to five modules of the same type. If the grid fails it switches to the backup outlet within 20 ms: it is a backup function, not a professional UPS, and it does not switch in 0 ms. With only the internal battery, the backup outlet gives less power than with an external battery connected. Below 0 °C it activates battery pre-heating before charging. If the internet connection is poor, Bluetooth remains, showing real-time data but not the history.
midpoint of the estimated range — on nominal capacity
| Parameter | Value | Source |
|---|---|---|
| Weight | 26.5 kg (58.4 lb) | manufacturer website |
| Power supply | 230 V / 50 Hz | manufacturer website |
| Nominal capacity | 2.52 kWh | Declared by the brand |
| Depth of discharge | 90 % | Declared by the brand |
| Cell chemistry | LFP (lithium iron phosphate) | Declared by the brand |
| Expandable | Yes | Declared by the brand |
| Maximum expanded capacity | 15.12 kWh | Declared by the brand |
| Battery voltage | 41.6 V | Declared by the brand |
| Feed-in limit | 800 VA | Declared by the brand |
| Maximum solar input | 4000 W | Declared by the brand |
| MPPT trackers | 4 | Declared by the brand |
| Grid charging | Yes | Declared by the brand |
| Maximum charge power | 3.68 kW | Declared by the brand |
| Dynamic tariffs | Built in | Declared by the brand |
| Backup power | UPS | Declared by the brand |
| Backup output | 1600 W | Declared by the brand |
| Switchover time | 20 ms | Declared by the brand |
| Rated cycles | 6000 cicli | Declared by the brand |
| Capacity at end of cycle life | 70 % | Declared by the brand |
| Warranty | 10 anni | Declared by the brand |
| Ingress protection | IP65 | Declared by the brand |
| Mounting | Floor standing | Declared by the brand |
| Minimum temperature | -20 °C | Declared by the brand |
| Maximum temperature | 55 °C | Declared by the brand |
| Cell heating | Yes | Declared by the brand |
| Works without internet | With limitations | Declared by the brand |
| Declared standards | VDE-AR-N 4105, IEC 62619 | Declared by the brand |
| Usable capacity | — | Not declared |
| Cell supplier | — | Not declared |
| Inverter included | — | Not declared |
| Guaranteed throughput | — | Not declared |
| Guaranteed remaining capacity | — | Not declared |
| Round-trip efficiency | — | Not declared |
| Standby consumption | — | Not declared |
| Noise level | — | Not declared |
| Local control | — | Not declared |
| Open protocols | — | Not declared |
| Home Assistant integration | — | Not declared |
| Where the data is hosted | — | Not declared |
| Remote updates | — | Not declared |
| App required for setup | — | Not declared |
| Battery passport | — | Not declared |
| Carbon footprint | — | Not declared |
| Recycled content | — | Not declared |
| Official list price | — | Not declared |
The rest of the data comes from one page on the manufacturer's site, cited row by row in the table above.
A manual or a datasheet counts as a source even when the original file is hosted elsewhere: what matters is the document, not the server. Where that happens, it is stated above.
These numbers are calculated, not stated: they have no source to cite, they have a formula you can redo. The price used is the manufacturer's list price, which is stable and the same in every country — not a shop's price on the day.
