Offgridtec Backup Kit Retrofit Kit 20.5kWh with Pytes 48100R-TE+ Battery Victron MultiPlus-II 48/5000 3-phase with Electricity Meter

Offgridtec’s 3-phase backup systems are ideal for emergency power supply or for expanding an existing solar system. In addition to lithium-ion batteries from Pytes, the systems include compatible MultiPlus-II inverters and a Victron Energy Cerbo GX MK2 for system monitoring. This allows you to ensure your power supply even in the event of a power outage.

With Pytes batteries, depending on your selection, you have a storage capacity ranging from 20.5 kWh to 30.7 kWh, allowing you to use your energy efficiently and remain self-sufficient for longer when needed. Thanks to the UPS function, the MultiPlus remains powered on even during a grid failure and takes over powering the connected loads. The switchover happens so quickly (in less than 20 milliseconds) that uninterrupted operation of computers and other electronic devices is guaranteed.

Applications of the Offgridtec Backup Kit:

• Emergency power supply
• Off-grid solar systems (stand-alone systems)
• Retrofitting of existing PV systems
• Grid-connected power supply
• UPS systems

What does the Offgridtec backup system include?

• Pytes E-Box 48100R-TE+ 5.12 kWh 51.2V LiFePO4 battery (4 or 6 units, depending on selection)
• 3x Victron MultiPlus-II 48/5000/70-50 230V
• 1x Victron Cerbo GX MK2 communication hub for system monitoring
• 1x Victron GX Touch 50 display panel for Cerbo GX
• 1x Victron Energy Lynx Power In
• 1x Victron Lynx Distributor
• 2x 0.9m Victron RJ45 UTP cable
• 1x 3m Victron RJ45 UTP cable
• 1x Victron MK3-USB VE.Bus to USB Interface
• 1x Pytes data cable, battery to Victron inverter, 3.5m MultiPlus 2
• Pytes battery-inverter power cable, 2m, positive (2-3x depending on selection)
• Pytes battery-inverter power cable 2m, negative (2-3x depending on selection)
• 2x Offgridtec 5-pack MEGA fuse 100A 70V for 48V systems
• 3x Offgridtec® 1m battery cable 50mm² with M8 eyelets on both ends

If selected: Electricity meter

• Victron VM-3P75CT Energy Meter 3-phase electricity meter 75A/phase
• 5m Victron RJ45 UTP cable

Expanded use of your backup system

The backup kit is available with or without a Victron energy meter and cable; however, an energy meter is required for setting up an energy storage system.

With this electricity meter, you can perform a grid-parallel installation and then monitor your energy consumption or control your energy costs. Thanks to phase compensation, you can even use the 3-phase meter for 1-phase systems. This makes seamless integration of decentralized energy sources and consumers into the existing power grid a breeze.

To ensure an ESS can be included in a pre-configuration, the meter must be purchased in advance or as part of the system!

The storage solution – Pytes E-Box-481000R TE+

The Pytes E-BOX 48100R TE+ is a LiFePO4 energy storage system with a capacity of 5.12 kWh that impresses with its high safety standards, well-thought-out design, and consistent performance in continuous operation. The compact, maintenance-free battery can be installed quickly and expanded into larger storage systems via parallel connection. Ideal as a reliable foundation for your custom storage project.

Technical Specifications

• Battery chemistry: Lithium iron phosphate (LFP)
• Nominal voltage: 51.2 V
• Voltage range: 47.5–57.6 V
• Rated capacity: 100 Ah
• Rated energy: 5.12 kWh
• Max. charging current: 50 A
• Max. discharge current: 50 A
• Charging temperature: 0–50°C
• Discharge temperature: -10~50°C
• Efficiency: ≥95%
• Communication protocol: RS-232, RS-485, CAN
• Cycle life: >6000 cycles at 90% DoD
• Dimensions: 440 x 620 x 117 mm
• Weight: 51 kg

The electronic core – the Victron Multiplus-II system

The Multiplus-II is a high-end device combination from Victron Energy that combines classic Multiplus components with an external current sensor and integrated anti-islanding function. This extends the PowerControl and PowerAssist functions to 100 A and broadens the potential range of applications to include ESS applications.

• 5000 W power output under non-linear load
• 4000 W continuous load and 9000 W peak power
• for 48V battery voltage
• 50 A transfer switch
• 70 A battery charger
• Output voltage: 230 VAC, frequency: 50 Hz
• Max. efficiency: 95%
• Protection class: IP22

Configuration

The MultiPlus-II is shipped unconfigured as standard. You can find the configuration guide for the system here in the download area. If you would like us to pre-configure the unit for you, we are happy to do so for an additional fee. To do this, add the item "Offgridtec Pre-configuration" to your cart during the ordering process. In this case, shipping may take 3–5 business days longer until the configuration is complete.

System Monitoring with the Victron Cerbo GX MK2 and GX Touch Display

With the Cerbo GX MK2 communication hub, you can easily control and monitor your system. The flexible connection options maximize your system’s performance. Thanks to the Cerbo GX MK2, you can monitor your system from anywhere. With the GX Touch 50 display, you always have all your system’s parameters at a glance and can make changes quickly and easily.

Safety Note: Have this complete system installed and commissioned only by a qualified electrician.