Deye Cloud 4.3: the AI that manages your solar battery (2026)

If you have invested in a solar panel system paired with a lithium-ion battery storage system, you know that high-performance equipment isn’t the whole story. To optimise your solar production, extend the lifespan of your batteries and reduce your electricity bills in the long term, the software that controls your system is just as crucial. This is where Deye Cloud comes in, the official app that works with the Deye hybrid inverters sold by Wattuneed.

With the recent rollout of the Deye Cloud 4.3 update, the app has reached a historic milestone: it has evolved from an excellent monitoring tool into a fully-fledged, proactive and autonomous energy manager, powered by Artificial Intelligence. Real-time monitoring, advanced data analysis and now an intelligent co-pilot: let’s take a comprehensive look at the new features and what this means in practical terms for your self-consumption.

“Deye Cloud 4.3 marks the transition from an app that simply displays your energy flows to one that takes action for you. It is the culmination of several years of R&D into smart EMS.”

📊 The basics: solar monitoring and analysis under control

Before looking at what’s new in version 4.3, let’s recap what makes the Deye Cloud ecosystem so powerful in everyday life for owners of solar PV systems with solar batteries.

Real-time monitoring of energy flows

From your smartphone (iOS or Android), you can instantly view all the energy flows in your home:

• The photovoltaic output of your panels (in instantaneous Wp)
• Your live domestic consumption
• Energy fed into or drawn from the public grid
• The state of charge (SoC) of your lithium batteries
• The breakdown between direct self-consumption, storage and surplus

Data analysis and detailed reports

The app stores and analyses your data to generate daily, weekly, monthly and annual graphs. These historical records are invaluable for understanding your consumption habits, identifying your energy peaks and maximising your self-consumption rate – a key step in getting the most out of your solar kit in Belgium or France.

But whereas Deye Cloud previously merely showed you the data, version 4.3 truly begins to act on your behalf. This is the key difference between passive monitoring and an active EMS (Energy Management System).

🚀 What’s new in Deye Cloud 4.3: 100% ‘effortless’ management

The motto of this update is clear: Smarter Energy, Effortless Control. Here are the three major new features that are transforming the user experience.

❄️ 1. ‘Effortless’ mode: exclusive to the Deye Copilot

This is the flagship feature of this update. Winter and its freezing temperatures are the worst enemies of lithium batteries: the cold causes the cells to discharge more deeply, which reduces their lifespan and leaves an insufficient backup in the event of a power cut.

Copilot’s Effortless mode solves this problem through a smart, gradual charging strategy known as Smart SOC Management.

The practical result: the battery maintains a healthy state of charge all year round, its calendar lifespan is preserved (by up to 15–20% depending on conditions), and you always have a backup reserve available for winter power cuts.

🔔 2. Real-time ‘online/offline’ notifications

Nothing is more frustrating than discovering that an inverter has been disconnected from the Wi-Fi network for several days… just when you need your backup power. Version 4.3 adds instant push alerts in the event of a change in the status of your Deye inverter.

• Loss of Wi-Fi or 4G connection for the data logger
• Loss of RS485 communication between inverter and battery
• Return to normal confirmed automatically

You are notified immediately on your phone, allowing you to resolve the issue straight away, before it affects your power generation or monitoring.

🤖 3. Deye Wise gets a makeover: your pocket energy expert

Deye Wise, the virtual assistant built into the app, has received three major upgrades to make it even more interactive and useful in your daily life.

🗣️ Voice playback (hands-free)

Are you driving or getting ready in the morning? Deye Wise can now read out your system data, error diagnostics or energy-saving tips aloud. A real boost to accessibility.

🌐 Real-time web search

The assistant is no longer limited to its own knowledge base. Connected to the internet, it can answer your questions about the latest Belgian or French solar energy policies, the grants available in Wallonia or the MaPrimeRénov’ subsidies, with fresh, up-to-date information.

📞 Direct line to customer service

If there’s a glitch, there’s no need to search for a phone number: a simple click in the Deye Wise chat connects you directly to the local support team. For the Belgian and French markets, Wattuneed remains your preferred point of contact via its dedicated technical support.

“The integration of conversational AI into an EMS app is a first in the consumer market. Deye Wise transforms solar monitoring into natural conversation.”

🔋 Why this update is crucial for Belgian and French owners

In the current energy landscape (end of the prosumer tariff in Wallonia, dynamic pricing, off-peak/peak hours), software intelligence is becoming just as important as installed peak power. Here are three concrete reasons to install Deye Cloud 4.3.

1. Winter protection for your lithium battery

LiFePO4 batteries (such as Pylontech, Leapton, BYD or Deye BOS-G) do not cope well with repeated deep discharge cycles in cold weather. Smart SOC Management extends their service life.

2. Automatic off-peak optimisation

In Belgium and France alike, the gap between peak and off-peak hours is widening. The Copilot intelligently charges your batteries during off-peak rates, then discharges them during peak hours.

3. Compatibility with all Deye kits

Whether you have a 3.6 kW single-phase inverter or a 12 kW three-phase inverter, Deye Cloud 4.3 works with the entire range.

⚙️ How do I update and activate Copilot mode?

1. Update the Deye Cloudapp from the App Store (iOS) or Google Play (Android) to version 4.3 or higher.
2. Log in to your user or installer account.
3. In the menu, select your power station and go to the Copilot tab.
4. Enable Effortless mode and set your healthy SoC threshold (70% recommended).
5. Enable push notifications for online/offline alerts.

For advanced settings (dynamic tariffs, peak shaving, AC coupling, etc.), see our Deye quick start guide or the full Copilot EMS guide.

🛠️ Wattuneed tools to size your installation

Before investing in a Deye solar kit, use the free resources in the Wattuneed toolkit: PV sizing tool, self-consumption calculator, ROI estimator. These tools ensure you get a system perfectly suited to your consumption profile.

💡 In conclusion: should you update to Deye Cloud 4.3?

Absolutely. With Deye Cloud 4.3, managing your home energy becomes truly smart and autonomous. The Copilot’s winter battery protection alone justifies installing this update, extending the lifespan of your equipment whilst reducing your electricity bills. Add to that real-time notifications and the Deye Wise voice assistant, and you have one of the most advanced EMS ecosystems on the 2026 solar market.

“With version 4.3, Deye is no longer just selling a hybrid inverter: it is selling a scalable smart energy platform. This is a major step forward for residential self-consumption.”

❓ FAQ – Deye Cloud 4.3 and Copilot

Is the Deye Cloud 4.3 update free?

Yes, the update is completely free for all users of compatible Deye hybrid inverters, via the App Store or Google Play.

Does Copilot mode work with all battery brands?

Yes, the Copilot EMS is compatible with all batteries connected to a Deye hybrid inverter: Pylontech, Leapton, BYD, Deye BOS-G, Dyness and many other approved LiFePO4 models.

Is my old Deye inverter compatible with version 4.3?

Most Deye SG04, SG05 and SG02 hybrid inverters are compatible. An updated firmware may sometimes be required: please contact Wattuneed support to check.

Do I need a subscription to use Deye Wise and the Copilot?

No. The basic features of Copilot and Deye Wise are included free of charge in the Deye Cloud app.

Can I use Deye Cloud alongside Solarman?

Yes, both apps can coexist on the same inverter. Solarman remains useful for some installers, whilst Deye Cloud provides the most advanced Copilot EMS features.

Is Copilot suitable for the Belgian market now that the prosumer tariff has ended?

Absolutely. Smart SOC Management and optimisation by hourly tariffs are specifically designed to maximise self-consumption rather than feed-in, which fits perfectly with the post-2024 context in Wallonia and Flanders.

Wattuneed SPRL
Rue Henripré 12, 4821 Andrimont, Belgium
Tel: +32 87 45 00 34 – info@wattuneed.com
www.wattuneed.com | Technical support