2.5kW - Balcony Set with Backup 5.12kW
€ 1,349.00 (VAT included)
In stock
- SKU: E3.0-5BA
- Brand: Marstekenergy
- Category: Inverters
VENUS-E 3.0 AC plug&play energy storage system 2.5kW/5.12kWh with LFP battery and integrated backup function.
The Marstekenergy VENUS-E 3.0 battery system is an all-in-one solution designed for residential self-consumption installations. With its plug-in AC architecture, this unit connects directly to the mains without modifying your existing PV setup, enabling instant use of solar surplus energy.
- Plug&Play connection: Quick installation without complex professional intervention, ready to use after plugging into a standard outlet.
- 5.12kWh LFP capacity: Lithium-iron-phosphate battery with long lifespan and maximum safety, ideal for daily charge/discharge cycles.
- 2.5kW output power: Sufficient to supply basic household loads during grid outages or non-solar hours.
- Integrated Backup function: Ensures electrical continuity during network failures, protecting critical appliances like fridge, router or lighting.
- Compact balcony-set format: Reduced dimensions and modular design, perfect for homes with limited space or balcony/terrace installations.
Bilotex offers this system with full technical support, manufacturer's warranty and fast shipping across the peninsula. Ideal for those seeking energy independence without complex investments.
Specifications
| Potencia | 2.5 kW |
|---|---|
| Backup Ready | Sí |
| Fases | Monofásico |
| Batería · tipo de bus | LV (48V) V |
| Batería · tensión mín. | 40.0 |
| Batería · tensión máx. | 60.0 |
| Batería · química | LiFePO4 |
| Subcategoría | Mini estación backup |
| Batería · capacidad | 5.12 kWh |
FAQ
Does this system provide real backup power during a grid outage?
Yes, the system features automatic UPS switching in under 20 ms, so your essential appliances stay powered without interruption. The backup output is 2.5 kVA, enough to cover critical household loads.
How much energy can the included battery store?
The built-in LiFePO4 battery has a capacity of 5,120 Wh (5.12 kWh) with a 90% depth of discharge, giving you approximately 4.6 kWh of usable energy. The battery is rated for more than 6,000 cycles, translating to over 15 years of daily use.
Is it compatible with my existing solar panels or any PV system?
Yes, the datasheet confirms compatibility with any PV system. It also includes an anti-feed-in function to ensure 100% self-consumption, so all generated energy is used on-site.
Can I expand the system later if my energy needs grow?
Absolutely. Up to 3 units can be connected in parallel on a single-phase setup, scaling up to 7.5 kW and 15.36 kWh of total capacity using the MARSTEK SmartBox.
How do I monitor and manage the system remotely?
The unit supports LAN, WiFi, Bluetooth, and RS485 connectivity, and integrates with external energy management systems via Open API and Modbus. This allows real-time monitoring of energy production and consumption through a compatible app or platform.
What are the dimensions and weight — will it fit on a small balcony?
The unit measures 480 × 153 × 624 mm and weighs 58 kg, making it compact enough for balconies and small terraces. It carries an IP65 ingress protection rating and operates in temperatures from -20 °C to +55 °C, so outdoor installation is fully supported.
Documents
Shipping across Spain. Delivery in 2-4 business days on the mainland (in-stock products). 14-day return window.