Part of the guide Home battery, EV charger and electric heating
Short answer: reviews of the Marstek Venus E are mostly positive, with a clear pattern. Customers and tests praise the price per kWh, the included P1 meter and the fact that, once set up, the battery quietly gets on with its job. The reservations are almost always about the app and the initial pairing (server region, 2.4 GHz Wi-Fi, P1 range at the meter cupboard), not about the battery itself. As a shop, Instalpunt scores 8.9 on WebwinkelKeur (48 reviews) and has delivered more than 25 Venus E orders since early September. Below you can read what we can genuinely back up, and what we cannot.
What do Instalpunt customers say?
On this page we only show reviews that verifiably come from customers: product reviews posted via our review invitation after an order, and the shop rating from WebwinkelKeur. We do not write reviews ourselves and do not pass off anonymous forum comments as 'customer experiences'.
The Marstek product reviews on instalpunt.nl are still recent; we have been selling the Venus E 3.0 since summer 2026 and only ask customers for a review after delivery. The first verified product review, posted on the collection version of the Venus E 3.0:
“Ordered on Saturday and collected the Mastek home battery myself on Monday. It was quick – within 10 minutes I was on my way home again.”
Piet T., 15 oktober 2026, Venus E 3.0 afgehaald in Alblasserdam
In addition, Instalpunt as an online shop has an 8.9 on WebwinkelKeur, based on 48 reviews (as of October 2026). That rating covers the whole shop, including boiler parts and thermostats, and mainly reflects delivery, communication and handling. It is not a product rating for the battery. New Marstek reviews appear automatically on the Venus E 3.0 product page and the collection version.
What Instalpunt sees itself
Since early September 2026 we have delivered more than 25 orders with a Venus E, over 35 batteries in total. The Venus E 3.0 is by far the most popular; just over a third of buyers choose collection in Alblasserdam (Netherlands), the rest have it delivered. A striking number of customers order two at once, usually because with a large roof one battery is already full by midday. That is also why we supply the 3.0 as a set of 2 and 3 units .
What we see in customer questions matches the picture from the tests: questions are almost never about the hardware, but about setting it up. The P1 meter that will not connect, an app that cannot find the battery, the question of which operating mode suits a dynamic tariff. That is why we have collected those answers in Marstek Venus E storing oplossen per symptoom.
What tests say: the strengths
Our sister site marstek.group has been running on a Venus E 3.0 itself for months and published an in-depth real-world reviewthere, including measurements with P1 quarter-hour data. We are the same company, so read that review as an honest but not independent test. The main points, which we recognise from our own sales:
| Strength | What lies behind it |
|---|---|
| Price per kWh | € 1,098 for 5.12 kWh is roughly € 214 per kWh of storage, including the P1 meter. Most plug-and-play competitors are well above that. |
| Complete out of the box | P1 meter CT003, mains cable and wall bracket are included. Control based on hourly prices is free in the app; no subscription is needed. |
| Does what it promises | Once set up, it charges during solar surplus or off-peak hours and discharges in the evening. Users barely notice it in daily use. |
| Silent | The Venus E 3.0 is passively cooled and has no fan; in the real-world test it is silent. |
| Measured savings | The real-world measurement by marstek.group comes to € 200 to € 400 per year, depending on consumption and energy contract. Not a brochure promise, but a range. |
The honest drawbacks
A home battery costing € 1,098 also has weak points. These are the points that emerge from the real-world review and the troubleshooting guide from marstek.group and that we recognise in customer questions:
- The app is functional, not polished. The translation is clunky in places and the menu takes some getting used to. On first pairing you need to create an account on the Europe server region; if you choose a different region, the app will not find the battery. This is the most frequent question we get.
- Wi-Fi is fussy. The battery and the P1 meter only work on 2.4 GHz Wi-Fi. A meter cupboard with a metal door or a storeroom behind two walls gives a weak signal, and then the P1 meter drops out. The Venus E 3.0 has a LAN port for this; the Venus E Mini does not.
- No backup power for the whole house. If the power goes out, your home does not automatically keep running. There is, however, a 2.5 kW backup socket for a single appliance.
- Heavy. According to the datasheet, the Venus E 3.0 weighs 60 kg and, unlike the previous generation, has no handles or wheels. It takes two people to position it.
- 800 W on a standard socket. The full output of 2,500 W requires a dedicated circuit installed by an electrician in line with local electrical regulations. Anyone who does not know this will be disappointed when the meter still runs up while cooking.
What we have not seen in the reviews and the real-world test not so far: complaints about noise or failure of the battery itself. That may be due to the short sales period; we will update this page as soon as there are more reviews.
Who is the Venus E a good buy for?
For households with solar panels and average to higher consumption who want to start with storage without any building work, the Venus E 3.0 is currently one of the most affordable ways to shift electricity. If you have a small household or rent your home, the Venus E Mini (2.0 kWh, € 659) is the entry-level option. If you want backup power for the whole house or a premium app, a permanently installed system is a better fit, as we explain in plug-and-play or fixed home battery. Torn between the current 3.0 and the announced 4.0? Read Venus E 3.0 or 4.0.
All models, prices and frequently asked questions can be found at Buying a Marstek home battery from Instalpunt. Have you bought a Venus E from us? After delivery we will send you an invitation to leave a review; with one click on the stars in that email, it appears as verified on the product page.
Frequently asked questions
Is the Marstek Venus E a good home battery?
For plug-and-play storage without an installer, the Venus E 3.0 is one of the strongest choices at the moment in terms of price per kWh and equipment. The reservations concern the app, the Wi-Fi requirements and the lack of backup power for the whole house.
What are the drawbacks of the Marstek Venus E?
An app that is less polished than some competitors', an initial pairing that needs attention (Europe server region, 2.4 GHz Wi-Fi), a weight of 60 kg, 800 W on a standard socket and no backup power for the whole home.
How much does a Marstek Venus E save per year?
The real-world measurement by marstek.group comes to € 200 to € 400 per year, depending on your consumption, solar panels and energy contract. With a dynamic tariff and a dedicated circuit, you will be at the upper end of that range.
Does the Marstek Venus E make any noise?
The Venus E 3.0 is passively cooled and has no fan. In the real-world test by marstek.group it is silent.
Are the reviews on instalpunt.nl genuine?
Yes. Product reviews can only be posted via the invitation customers receive after delivery, and the shop rating comes directly from WebwinkelKeur. We remove spam comments.
How many Marstek batteries has Instalpunt sold?
Since early September 2026, more than 25 orders with over 35 Venus E batteries in total, most of them the Venus E 3.0. Just over a third are collected in Alblasserdam (Netherlands).