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List of products by brand MARSTEK

Marstek Energy offers a complete range of smart solar solutions, including VENUS E Gen 3.0 home batteries, balcony storage systems, flexible solar panels and portable power stations. These products are designed for easy installation and intelligent energy management, tailored to the needs of the home.

MARSTEK is committed to providing affordable clean energy products for every family. In 2020, Peter, the company's founder, created the MARSTEK brand, developed lithium iron phosphate laminate cells himself, achieved a number of technological innovations and launched the world's first home micro-solar battery storage system.
MARSTEK is a combination of 'MARS' and 'TEK', representing Mars and technology. Embracing the spirit of Mars exploration, constantly innovating in energy storage technology, unlocking the code of new energy for humans and producing energy anywhere.





FAQ - Pylontech LiFePO4 batteries & solar storage

1. What is a Pylontech battery used for in a photovoltaic system? +
A Pylontech battery stores the solar energy produced during the day so you can use it later (evening/night), increase self-consumption and, depending on the system configuration, provide backup power.
2. What type of lithium battery is Pylontech? +
Pylontech offers LiFePO4 (lithium iron phosphate) batteries, a chemistry known for its stability and durability in energy storage applications.
3. How do I choose the battery capacity (kWh) for Pylontech? +
Capacity depends on your consumption, the loads you want to supply, the autonomy you need, and your solar production. In self-consumption, sizing often aims to cover evening/night usage; off-grid systems are sized for 24/48 hours (or more) depending on constraints.
4. Can I expand my storage by adding Pylontech modules? +
Yes. A key advantage is modularity: you can increase capacity by adding modules, within the manufacturer’s recommendations and the inverter/charger limitations.
5. Is Pylontech compatible with all inverters? +
Compatibility depends on the inverter/charger model and integration requirements: system voltage, communication protocol (CAN / RS485), parameters and commissioning procedure. Always check the compatibility list and recommended settings before installation.
6. CAN or RS485: which communication should I use? +
It depends on the inverter and the chosen wiring/architecture. Some systems prefer CAN for battery data exchange, others use RS485. Follow the compatibility recommendations and commissioning guide.
7. Are Pylontech batteries suitable for off-grid systems? +
Yes, they can be suitable for off-grid use if the overall system is designed for autonomy: PV sizing, battery capacity, inverter power, and a backup strategy (generator, etc.) if needed.
8. Which accessories are useful with Pylontech batteries? +
Depending on your configuration: interconnection cables, mounting racks/supports, communication components and, for some ranges, control modules. These accessories help with integration, cable safety and maintenance.
9. Where can I find a commissioning guide (e.g., US5000)? +
Check our technical resources and installation guides (depending on the model). For example, Wattuneed provides a dedicated guide for installing Pylontech US5000 batteries: Pylontech US5000 installation guide.

The revolution of N-Type ABC and TOPCon cells

The photovoltaic market is undergoing a profound transformation with the progressive shift from P-Type cells to N-Type architectures. At Wattuneed, we integrate the latest innovations such as TOPCon (Tunnel Oxide Passivated Contact) and ABC (All Back Contact) to offer our customers energy productivity that exceeds conventional standards.

TOPCon N-Type: The new standard for high efficiency

TOPCon technology is establishing itself as the natural successor to PERC. By adding an ultra-thin oxide layer, it drastically reduces electron recombination losses. The result: a cell efficiency exceeding 25% and, above all, an improved temperature coefficient. This means your panels lose less power during hot days, a crucial advantage for rooftop installations where ventilation is limited.


ABC (All Back Contact): Aesthetics at the service of performance

ABC technology represents the pinnacle of current solar engineering. Unlike classic panels, all electrical contacts are placed at the rear of the cell.

  • Zero shading: The front side is 100% dedicated to photon capture, increasing the active surface area.
  • Premium Full Black Design: Without visible metal grids (busbars), the panel offers a deep and uniform black, ideal for demanding architectural projects.
  • Increased durability: The ABC structure is inherently more resistant to micro-cracks caused by temperature variations.

Bifaciality and yield in low light conditions

The use of N-Type substrates allows for a much better spectral response. Our panels capture light more effectively at dawn, dusk, or in overcast weather. Coupled with a bifacial structure, this technology allows for the recovery of albedo (ground reflection), increasing energy gain by up to 20% depending on the type of surface (white gravel, light membranes, or ground mounting).

By choosing these technologies at Wattuneed, you are investing in equipment with low degradation (less than 0.4% per year), ensuring maximum profitability for over 30 years.