GROWATT 5.5KWH LITHIUM BATTERY WITH BRACKET

The Growatt 5.5kWh Lithium Battery with Bracket is a modular energy storage system engineered for residential and light commercial solar installations. Built on proven Lithium Iron Phosphate (LiFePO4) chemistry, it delivers 5.5kWh of nominal capacity with 93% usable depth of discharge — providing reliable, long-cycle-life energy storage for grid-tied, hybrid, and off-grid solar systems.

LiFePO4 Chemistry — Safety and Longevity

Unlike cheaper lithium-ion alternatives, LiFePO4 offers superior thermal stability, fire resistance, and cycle longevity. With 6,000+ charge/discharge cycles at 80% depth of discharge, the Growatt battery outlasts traditional lead-acid batteries by 3–5x, delivering lower total cost of ownership over its operational life.

93% Depth of Discharge

The 5.5kWh nominal capacity translates to 5.12kWh usable energy — maximizing storage utilization without compromising battery health. This high DoD enables homeowners to extract more energy per cycle, reducing the number of batteries needed for a given backup runtime.

Scalable to 66kWh

Support for up to 12 parallel units allows seamless capacity expansion from 5.5kWh to 66kWh as energy demands grow. Add batteries incrementally without replacing the entire system — ideal for phased installations or future-proofing against increasing power consumption.

Easy Installation with Included Bracket

The wall-mount bracket simplifies installation, reducing labor costs and enabling vertical stacking in space-constrained areas. Plug-and-play RS485/CAN communication ensures automatic recognition by compatible Growatt inverters, eliminating manual configuration.

Built-In BMS Protection

The integrated Battery Management System monitors voltage, current, and temperature across all cells, providing multi-layer protection against overcharge, over-discharge, short circuits, and thermal runaway. Automatic cell balancing ensures even wear across the battery pack, extending service life.

Compatible with Growatt Inverters

Designed for seamless integration with Growatt SPF, SPH, and MIN series inverters, the battery also works with most standard 48V solar inverters via industry-standard communication protocols.

A proven, scalable energy storage solution for homes and businesses seeking reliable backup power and energy independence.

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Technical Specifications

Capacity & Electrical

• Nominal Voltage: 51.2V
• Capacity: 100Ah
• Energy (Nominal): 5.5kWh
• Usable Energy: 5.12kWh (93% DoD)
• Depth of Discharge: 93%
• Battery Chemistry: Lithium Iron Phosphate (LiFePO4)

Performance

• Cycle Life: 6,000+ cycles @ 80% DoD
• Round-Trip Efficiency: ~95%
• Self-Discharge: <3% per month
• Charge Voltage: 58.4V (typical)
• Discharge Cut-Off Voltage: 42V (typical)
• Max Continuous Charge/Discharge Current: Typically 50A–100A (verify datasheet)

Scalability

• Parallel Support: Up to 12 units
• Max System Capacity: 66kWh (12 x 5.5kWh)
• Series Configuration: Not supported (48V nominal system)

Communication & BMS

• Communication Protocol: RS485 / CAN
• BMS: Built-in Battery Management System
• Protection Features:
• Overcharge protection
• Over-discharge protection
• Over-current protection
• Short-circuit protection
• Over-temperature protection
• Under-temperature protection
• Cell balancing (active)

Compatibility

• Inverters: Growatt SPF, SPH, MIN series
• Third-Party Inverters: Most 48V solar inverters with RS485/CAN communication
• Voltage Class: 48V nominal systems

Physical Specifications

• Dimensions (typical): ~480 x 570 x 150mm (verify with manufacturer)
• Weight: ~50kg (battery + bracket)
• Mounting: Wall-mount (bracket included)
• IP Rating: IP20 (indoor use)
• Cooling: Natural convection (fanless)

Environmental

• Operating Temperature: -10°C to 50°C (14°F to 122°F)
• Storage Temperature: -20°C to 60°C
• Operating Humidity: 0% to 95% non-condensing
• Altitude: Up to 4,000m

Safety & Certifications

• Battery Chemistry: LiFePO4 (fire-resistant, non-toxic)
• Certifications: CE, IEC, UN38.3 (verify regional certifications)
• Fire Safety: LiFePO4 chemistry inherently safer than lithium-ion

Warranty

• Typical Warranty: 5–10 years (verify with manufacturer)
• Performance Guarantee: Typically 70–80% capacity retention after warranty period

Package Contents

• 1x Growatt 5.5kWh Lithium Battery
• 1x Wall-mount bracket
• Communication cable (RS485/CAN)
• User manual
• Mounting hardware