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Pytes Pi LV BCU - Battery Control Unit

The Battery Control Unit is the intelligent brain of your Pi LV1 energy storage system. Designed to sit at the top of your battery stack, this unit manages how your energy is stored and used, ensuring everything runs safely and efficiently. If you want a home energy system that is easy to set up and even easier to live with, this is the essential starting point. It allows you to build a custom battery bank that fits your specific needs, giving you total control over your power without any complicated technical hurdles.

Setup in minutes: The clever plug and play design means the system can be installed in as little as 15 minutes because there is no complicated wiring required. Safety as standard: This unit features a built in circuit breaker and fuse, providing a high level of protection for your home and your family. Monitor from your phone: You can keep an eye on your energy levels in real time and receive remote updates through the smart monitoring app. Grows with you: You can start small and add more battery modules later if your energy needs increase, with a very flexible stacking design. Put it anywhere: With its dustproof and waterproof rating, you have the freedom to install your battery stack either inside your home or outdoors. Peace of mind: The system uses a hazard free battery design that has been rigorously tested to meet the highest international safety standards.
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SKU: Pi LV BCU
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Total price:£1,308.00
Product Details

The Pytes Pi LV1 Battery Control Unit is the core management component for the Pi LV1 stackable low voltage energy storage system. This unit is specifically engineered to coordinate with individual 5.12kWh Lithium Iron Phosphate (LFP) modules, allowing for a highly customisable energy solution that can range from a single stack of 5.12kWh up to a substantial 30.72kWh. By connecting multiple stacks together, you can even reach a total system capacity of 245.76kWh for much larger properties.

Technically, the unit houses a sophisticated Battery Management System (BMS) that monitors the health and performance of every cell in the stack. This ensures that charging and discharging are always balanced, which significantly extends the life of your batteries. The Pi LV1 is capable of delivering a powerful continuous output of 14.08kW and a surge output of 25.6kW when six modules are used, making it more than capable of handling high demand household appliances like electric ovens or washing machines.

Installation is remarkably straightforward for trade professionals. The unit uses installer friendly quick connectors which eliminate the need for traditional hand-wiring, significantly reducing the risk of errors and saving time on site. The robust IP55 rated enclosure ensures the internal electronics are protected from the elements, while the integrated DC breaker and fuse provide essential physical protection for the entire circuit. Whether you are looking to save money on your electricity bills by storing solar energy or simply want the security of a backup power supply, this control unit provides the reliable, smart foundation your home needs.

Product Specifications

Core Functions

  • Data Aggregation: Collects and processes data from all BMUs in the stack.
  • Charge/Discharge Management: Dynamically manages operational limits.
  • Inverter Communication: Translates battery data into readable protocols for hybrid inverters.
  • Protection Coordination: Orchestrates system-wide responses to fault conditions.
  • System Supervision: Monitors voltages, currents, and temperatures in real-time.

Communication Interfaces

  • CAN Bus: Dedicated inverter communication (500 kbps).
  • RS485: Secondary inverter and BMS communication (9600 bps).
  • RS232: Service diagnostics and firmware updates (115200 bps).
  • Wi-Fi: Integrated for remote monitoring and access.
  • Dry Contact: For external control and status integration.

Stack Capacity & Scalability

  • Single Stack Management: Supports 1 to 6 BMUs per tower.
  • Capacity Range: 5.12 kWh to 30.72 kWh per stack.
  • Multi-Stack Capability: Supports parallel operation of multiple stacks (up to 8 stacks in specific configurations).
  • System Range: Scalable from 5.12 kWh to over 120 kWh.

Inverter IntegrationThe BCU provides sophisticated closed-loop communication with major hybrid inverter brands, including:

  • Victron Energy
  • Sol-Ark

Monitoring & Protection

  • Electrical Monitoring: Stack/module voltage, charge/discharge current, and power flow.
  • Thermal Monitoring: Module temperatures and environmental conditions.
  • BMS Protection: Charge over-voltage, discharge under-voltage, over-current, short-circuit, reverse polarity, and high/low temperature protection.
  • Advanced Management: Cell balancing, intelligent charging algorithms, and capacity retention calculations.
  • Status Indicators: Front panel LEDs for RUN (status), ALM (alarms), and a multi-LED SOC display.

Environmental & Safety Specifications

  • Protection Rating: IP55
  • Charge Temperature: 0°C to 45°C
  • Discharge Temperature: -10°C to 50°C
  • Relative Humidity: 20% – 95%
  • Maximum Altitude: 4000 m
  • Calendar Life: 10+ years
  • Compliance: Integrated hardware designed to satisfy UL9540 and UL9540A requirements.

Physical Installation

  • Mounting: Mounted directly to the top BMU.
  • Securing: Utilizes wall support brackets and mechanical locking hardware.
  • System Components: Involved in controlling the integrated DC breaker, fuse protection, and stack isolation.

Shipping & Collection

Tracked Delivery (Currently 1-3 business days):

  • Free over £250.
  • £5.99 for orders under £250.
  • £5.99 for orders under £50.

Next Business Day Delivery:

  • £15 Flat Rate.

Collection:

  • Free to collect from our warehouse.

Pre-Order:

  • 5-10 Business Days delivery unless otherwise stated.

Shipping Policy

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As a leading UK Victron Distributor and the Official UK Pytes Distributor our in house engineering team can deliver bespoke solutions. We handle design, specification, and system optimisation to meet your specific needs, regardless of size, weight, environmental, or regulatory constraints. From DIY projects up to large scale commercial projects our team can do it all.

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