Jackery SolarVault 3 Pro: Clever Kit, but Is It Too Expensive?

Another big name has joined the home battery race. Jackery, which also makes portable power stations, now has the SolarVault 3 range. It's well reviewed in Germany, but whether it's good value depends on where, and when, you look, and there's no Irish price yet.

A home battery does a simple job. It stores electricity, from solar panels or from the grid on a cheap rate, and hands it back when you need it. Many of the newer ones are all-in-one boxes: battery, inverter (the bit that turns stored power into the electricity your home uses) and often solar inputs, all under one lid.

Before going any further: as of 9 October 2026, we couldn't find an approved way in Ireland to plug a battery like this into an ordinary socket and have it power the house. Getting your battery wired in by a Registered Electrical Contractor is the route that works today, for batteries approved for sale here.

What it does for you

If you have solar panels and a compatible smart meter, a box like this soaks up what you'd otherwise send to the grid during the day and gives it back in the evening. If you don't, it can fill up on a cheap night rate and run the house through the dearer hours, as long as your tariff has a decent gap between the two. And if the power goes, it can run whatever's plugged into its own backup socket.

Meet the SolarVault 3 family

There are three main models, and it's worth keeping them apart.

SolarVault 3 Pro. Four solar inputs, each rated for up to 1,000 W of panels, and a 1,200 W inverter. This is the one most reviewers have tested. Rated isn't the whole story, mind: in CHIP's test, only 1,800 W of that solar input could go into charging the battery.

SolarVault 3 Pro Max. The same four solar inputs, with a bigger 2,500 W inverter.

SolarVault 3 Pro Max AC. No solar inputs at all. It takes power in and out over an ordinary AC connection, so it can sit alongside solar panels you already have, or work with none.

Jackery quotes 2,520 Wh per base unit, about 2.5 kWh (the same units as on your electricity bill). That's the headline figure: Jackery's own spec sheet also lists a lower 2,142 Wh "rated energy", and CHIP measured 2,317 Wh in its lab. You can add up to five 2,520 Wh BP2500 expansion batteries, for up to 15.12 kWh in one tower. That's a smaller starting point than the roughly 5 kWh Anker and EcoFlow boxes, but it means a lower entry price.

Jackery claims 6,000 charge cycles before the battery drops to 70% of its capacity, and backs the range with a ten-year warranty. It's rated IP65, which means sealed against dust and protected against jets of water, so it can live outdoors in Irish weather but it may be best to shelter it somewhat from the Irish rain. It works from -20°C to 55°C. In a power cut, Jackery says it switches over to its backup socket in 20 milliseconds.

What reviewers are saying

German tech site CHIP put the Pro through lab tests and gave it a "Gut" (good) rating of 2.2. It measured 2,317 Wh of capacity. Taking solar power through the battery and out again, it was 85.7% efficient at 800 W, dropping to 78.8% at a lighter 200 W. So for every 100 units of solar in, you'd get roughly 79 to 86 back out. Charging from the grid and back again came in at 77.2%. CHIP flagged weaknesses with battery charging, the backup output and the app.

One number to note: CHIP measured 10.1 W of standby use. That sounds tiny, but over a year of sitting idle it would add up to about 88 kWh, electricity the box uses just to stay awake. Jackery quotes 5 W.

COMPUTER BILD tested the Pro in everyday use and found efficiency between 78% and 87%, with about 10 W of its own consumption. It was more positive about the app, and it worked well with Home Assistant and Shelly smart meters. Its main gripe: the backup socket sits awkwardly close to the other connections.

For a UK view, Stu's Reviews has a handy first look at the Pro: "Plug in Solar and Home Battery Storage is FINALLY Here (Kind of)". It walks through the current rules as well as the box itself, and points out that the price discussed "is based on the current price on Jackery's German official website", because it wasn't yet on sale in the UK.

So, is it expensive?

It depends where, and when, you look.

In the UK, Maplin lists the SolarVault 3 Pro at £899 and the Pro Max at £1,099, though neither could be bought yet on 9 October. Dividing price by each maker's headline capacity gives a rough cost per kWh of storage, at 9 October prices:

• Jackery SolarVault 3 Pro: £899 for 2.52 kWh, about £357 per kWh.

• Jackery SolarVault 3 Pro Max: £1,099 for 2.52 kWh, about £436 per kWh.

• Anker SOLIX Solarbank 4 E5000 Pro: £1,699 for 5.024 kWh, about £338 per kWh. That's a launch offer ending on 12 October; at its £2,129 full price, it's about £424 per kWh.

• EcoFlow Stream AC 5000: £1,499 for 5.024 kWh, about £298 per kWh (down from £1,599, or about £318 per kWh).

So the Jackery Pro is dearer per kWh than the EcoFlow, with or without the discount, and sits between the Anker's launch price and its full price. The Pro Max is the dear one of the bunch. It isn't a perfect comparison: the EcoFlow has no solar inputs, the Jackery starts at half the capacity, and none of these prices includes installation.

Germany tells a different story. CHIP rates the Pro's price as good value ("Günstig"), and Jackery's German shop is running big discounts. But those shop prices are for Germany only and without VAT, so they're no guide to what you'd pay here.

The Irish catch

Two catches, really. There's no Irish price or Irish stockist yet. And even in the UK, Jackery says plainly that the SolarVault 3 "is not a plug-in socket product". It must be hardwired to the consumer unit by a qualified electrician, with the network operator notified. Its German shop, meanwhile, sells the same family as "Plug-and-Play-Installation". Same box, different rules.

In Ireland, ESB Networks says batteries "approved for sale on the Irish market" can be connected by a Registered Electrical Contractor, with ESB Networks notified. Whether the SolarVault 3 becomes one of them starts with Jackery bringing it here.

Should you buy one?

Not yet. It's a flexible system, and German reviewers rate it, with solid efficiency and the option to start small and add batteries later. But there's no Irish price yet, the UK listings aren't live, and on UK prices it's no bargain, especially the Pro Max.

If Jackery brings it here at a sharper price, and the Irish rules on plug-in batteries move along, it could be worth a second look. We'll keep an eye on both.

Note: At the time of writing, Techknow Ireland has no commercial relationship with any manufacturer or provider of battery or power services.

Techknow Ireland is not responsible for the content of external or third-party sites.