Jackery SolarVault 3 Pro Max
A 2.52 kWh home battery with 2,500 W bidirectional AC and four MPPT solar inputs, expandable to 15.12 kWh with BP2500 packs, with a 10-year warranty.
- Best for high solar input
- Home battery
- 2.52 kWh
- 4 MPPT inputs
- Made by Jackery.
- Capacity: 2,520 Wh (LiFePO4) in the base unit, expandable from 2.52 to 15.12 kWh with BP2500 battery packs.
- Power: 2,500 W bidirectional AC, with 800 W grid output by default and up to 2,500 W where permitted and professionally configured.
- Solar: four MPPT inputs of up to 1,000 W each, 4,000 W PV in total.
- Backup: up to 2,500 W with a switchover within 20 ms. In the UK Jackery says it must be hardwired by a qualified electrician.
Not tested by us
We have not tested the Jackery SolarVault 3 Pro Max. The figures on this page come from the sources listed at the end of the page, checked on 11 November 2026, and we do not show prices. "Best for" is based on what the maker says the product is designed for, not on our own tests.
Key figures
2.52 kWh
Capacity (15.12 kWh maximum)
2,500 W
Bidirectional AC
4,000 W
PV input (4 MPPT)
Specifications
Last checked on 11 November 2026. The grey text under each name explains what the value means. To see it next to other products, compare it in our comparison tool.
| Specification | Value |
|---|---|
| Storage | |
| CapacityHow much energy the battery stores. Bigger means longer runtime or more of your own solar power used later. | 2,520 Wh for the base unit |
| Battery chemistryLFP (lithium iron phosphate) cells are known for long life and stable behaviour with heat. | LiFePO4 (LFP) |
| Cycle lifeHow many full charge and discharge cycles the cells are rated for before they hold less than the stated share of their original capacity. | 6,000 cycles at 90% depth of discharge, with at least 70% state of health |
| ExpansionExtra battery units that add storage to the same system. | BP2500 battery packs, from 2.52 up to 15.12 kWh in total |
| Power | |
| AC output, grid-connectedThe lower output allowed when it feeds power into the home's circuits or the grid. | 800 W by default; up to 2,500 W where permitted and professionally configured |
| AC charging inputHow fast it charges from a wall socket or the grid. | Up to 2,990 W maximum AC input |
| Backup outputA separate socket that keeps selected devices running when the grid is down. | Up to 2,500 W, switchover within 20 ms; up to 2,990 W in bypass mode |
| Efficiency and standby useLosses when charging, discharging and doing nothing. | Not stated in the sources we read |
| Solar | |
| Solar inputHow much solar panel power it accepts. A higher figure fills the battery faster on a sunny day. | Four MPPT inputs of up to 1,000 W each (4,000 W in total), 16 to 60 V, 28 A per input |
| Connection and housing | |
| Grid connectionThe supply type it is built for. Check it matches your home's supply. | Single phase, 230 V AC, 50 Hz. Jackery says that in the UK it must be hardwired to the consumer unit by a qualified electrician. |
| Dimensions (W × H × D)Width, height and depth of the unit, so you can check that it fits. | 485 × 248 × 282 mm (Jackery does not state which number is which axis) |
| WeightMatters for lifting, wall mounting and moving it. | 26.5 ± 0.5 kg |
| Protection ratingIP ratings show protection from dust and water. IP55 and IP65 are rated for outdoor-style exposure; check the installation guidance. | IP65 |
| Operating temperatureThe range it is rated to work in. Cold and heat can reduce performance. | -20 to 55 °C, with automatic battery heating in freezing conditions |
| Noise levelFan noise while working. | Not stated in the sources we read |
| ConnectivityHow you monitor and control it, usually through an app. | Wi-Fi, Bluetooth and Ethernet; Jackery App |
| Warranty | |
| WarrantyThe period the maker covers. Read the terms: conditions and capacity guarantees differ. | 10 years |
Compatible with
What Jackery says this product works with. Anything not listed here is not confirmed.
- Extra capacity
- Jackery BP2500 battery packs, for up to 15.12 kWh in total.
- Tariffs
- Scheduling in the Jackery App for compatible smart and off-peak electricity tariffs.
- Other models
- The SolarVault 3 Pro and SolarVault 3 Pro Max AC are separate models in the same range.
Rules where you live
Jackery says that under current UK requirements the SolarVault 3 Pro Max must be hardwired to the consumer unit by a qualified electrician, and that the supplied plug cable may be used for plug-in connection only if UK regulations permit it. In Great Britain, plug-in solar kits of up to 800 VA have been legal since 27 August 2026, but the rules exclude plug-in batteries. Treat it as an installed battery, not a plug-in battery.
A battery that can export normally also needs notifying to your grid operator. Rules, incentives and tax treatment differ by country: see our country guides.
Strengths and things to check
Strengths
- Four MPPT inputs and up to 4,000 W of solar input
- 2,500 W bidirectional AC and 2,500 W backup
- Expandable to 15.12 kWh
- LiFePO4 with 6,000 cycles at 90% depth of discharge, per Jackery
- IP65 and a 10-year warranty
Worth checking before you buy
- Grid output is 800 W by default; higher output needs where permitted and professional configuration
- In the UK it must be hardwired by a qualified electrician, so it is not a plug-in battery there
- 26.5 kg per unit, and Jackery does not say which dimension is which
- Efficiency and noise figures are not stated
Change log
We record changes to this page here, so you can see when figures such as the warranty were last updated.
- 11 November 2026
- Page published. Warranty at publication: 10 years (Jackery UK product page). This page covers the Pro Max, not the Pro or the Pro Max AC.
Where this information comes from
We have not tested the SolarVault 3 Pro Max. Every figure above comes from Jackery's UK product page for the SolarVault 3 Pro Max, including its specification section, last checked on 11 November 2026. A value the page does not state is shown as not stated.
We do not show prices, because they change often and differ between sellers.
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Common questions about Jackery SolarVault 3 Pro Max
Can I plug the SolarVault 3 Pro Max into a socket in the UK?
Jackery says it must be hardwired to the consumer unit by a qualified electrician under current UK requirements. The supplied plug cable may be used only if and when UK regulations permit it. The rules for plug-in solar in Great Britain exclude plug-in batteries.
How much can the SolarVault 3 Pro Max store?
The base unit stores 2,520 Wh. Jackery lists BP2500 battery packs to expand it up to 15.12 kWh.
What is the difference between the Pro, Pro Max and Pro Max AC?
Jackery's comparison table lists 1,200 W bidirectional AC for the Pro and 2,500 W for the Pro Max and Pro Max AC. The Pro Max has 4,000 W PV input on four MPPTs, while the Pro Max AC is for adding storage to an existing solar system.
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