Knox Powerwall 3.1 | 2.56kWh Lithium Battery (25.6V 100Ah) | LiFePO4 Energy Storage

Knox Powerwall 3.1 – LIO 2.66-IP20

The Knox Powerwall 3.1 (2.56kWh) is a safe, scalable, and long-life LiFePO4 lithium battery designed for residential and small commercial solar energy storage systems. Powered by REPT prismatic cells and protected by PACE intelligent BMS, it delivers over 6000 cycles, low-voltage safety, and easy wall-mounted installation.

📦 Product Overview

The Knox Powerwall 3.1 – Model LIO 2.66-IP20 is engineered for reliability, safety, and long-term energy storage performance. Its low-voltage 25.6V architecture makes it safer for home use, while parallel scalability up to 8 units allows flexible system expansion. With RS485 & CAN communication, it is compatible with most leading hybrid and off-grid inverters.

🌟 Key Features

• 🔋 REPT LiFePO4 prismatic battery cells

• 🛡 Low-voltage 25.6V system for enhanced safety

• 🔁 Parallel connection up to 8 units

• 🧠 PACE intelligent BMS

• 📟 4.3” Touch LCD display

• 🔌 RS485 & CAN inverter communication

• 🔧 Maintenance-free operation

• 🧱 Wall-mounted compact design

• ❄ Wide temperature range –20°C to +55°C

• 🔐 Multiple protection layers (OVP, LVP, OCP, OTP, SCP)

🔐 Battery Protection System

The Knox Powerwall 3.1 includes comprehensive safety protection:

• Over Voltage Protection (OVP)

• Low Voltage Protection (LVP)

• Over Current Protection (OCP)

• Over Temperature Protection (OTP)

• Low Temperature Protection (LTP)

• Short Circuit Protection

• Independent charge & discharge protection

  Category	Specification
  Brand	Knox
  Series	Powerwall
  Model	LIO 2.66-IP20
  Battery Type	Lithium-ion (LiFePO4)
  Cell Type	REPT Prismatic Cells
  Nominal Voltage	25.6V
  Nominal Capacity	100Ah
  Total Energy	2.56kWh (2560Wh)
  Usable Energy	≥ 95%
  Max Charging Current	100A
  Max Discharging Current	100A
  Peak Discharge Current	120A (2 seconds)
  Charging Voltage Range	27.6V – 28.8V
  End of Discharge Voltage	22V
  Cycle Life	> 6000 cycles
  Design Life	10 Years
  Battery Management System	PACE Intelligent BMS
  Parallel Expansion	Up to 8 Units
  Series Connection	Not Supported
  Communication Ports	RS485, CAN
  Display	4.3” Touch LCD
  Protection Level	IP20
  Mounting Type	Wall-Mounted
  Operating Temperature (Charge)	0°C to +55°C
  Operating Temperature (Discharge)	–20°C to +55°C
  Humidity Range	0–95% (Non-Condensing)
  Dimensions (W × D × H)	395 × 470 × 160 mm
  Weight	28 kg
  Warranty	5 Years
  Certifications	IEC62619, UL1973, UL9540A, CE, ROHS, UN38.3, MSDS

  🧪 Performance & Lifetime

  • Cycle Life: >6000 cycles

  • Designed Calendar Life: 10 Years

  • Warranty: 5 Years

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  📜 Certifications

  IEC62619, UL1973, UL9540A, ROHS, UN38.3, MSDS, CE

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  🛒 Recommended Use

  • Residential solar systems

  • Hybrid & off-grid solar setups

  • Backup power solutions

  • Energy storage expansion systems

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  ❓ Frequently Asked Questions (FAQs)

  Q1: Is Knox Powerwall 3.1 safe for home use?
  Yes. Its low-voltage 25.6V design and LiFePO4 chemistry make it extremely safe for residential installations.

  Q2: Can I expand capacity later?
  Yes. You can connect up to 8 batteries in parallel.

  Q3: Which inverters are compatible?
  Compatible with most major inverter brands via RS485 or CAN communication.

  Q4: Does it require maintenance?
  No. The battery is maintenance-free.