Description

I verified the technical specs against QVWi’s official product page and the manufacturer datasheet, including 51.2V / 100Ah, 5.12kWh nominal capacity, 4.92kWh usable energy, 90% DOD, 6000+ cycles and CAN/RS485 communication. (QVWi Shop)

QVWi 5.12kWh LiFePO4 Rack Mount Lithium Battery

The QVWi 5.12kWh Rack Mount Lithium Battery is a high-performance 51.2V LiFePO4 energy storage battery designed for residential and commercial solar, backup power and off-grid applications.

With 5.12kWh nominal storage capacity, 4.92kWh usable energy and a 100Ah capacity, the QVWi battery provides dependable energy storage in a professional rack-mount format. Its modular design makes it suitable for both smaller residential systems and larger battery banks where additional storage capacity is required. (Shopify)

Built around Lithium Iron Phosphate technology, the battery offers excellent cycle life, thermal stability and long-term performance. QVWi specifies a cycle life of 6,000+ cycles at 90% depth of discharge, making it suitable for frequent daily cycling in solar installations. (Shopify)

Key Features

5.12kWh nominal battery capacity
4.92kWh usable energy
51.2V nominal voltage
100Ah capacity
Premium LiFePO4 lithium battery technology
90% Depth of Discharge
6,000+ cycle life
Integrated Battery Management System
CAN and RS485 communication
Supports up to 32 batteries in parallel
Maximum discharge current of 100A
Maximum charge current of 70A
Rack-mount design
Wall and floor mounting possible with additional mounting kits
Short-circuit protection
Integrated temperature and electrical protection
Plug-and-play battery terminals
Suitable for residential and commercial energy storage
Compatible with a wide range of leading hybrid inverters

(Shopify)

Inverter Compatibility

The QVWi 5.12kWh battery is designed to integrate with mainstream solar inverter platforms. QVWi specifically lists compatibility with:

Luxpower
Deye
Sunsynk
Victron

Correct inverter firmware, battery communication settings and CAN/RS485 configuration must be confirmed during installation. (QVWi Shop)

Technical Specifications

Specification	QVWi 5.12kWh
Battery Type	LiFePO4 Lithium
Nominal Energy	5.12kWh
Usable Energy	4.92kWh
Nominal Voltage	51.2V
Nominal Capacity	100Ah
Charge Voltage	56.0V
Float Voltage	54.6V
Recommended Charge Current	≤50A
Maximum Charge Current	70A
Recommended Discharge Current	≤50A
Maximum Discharge Current	100A
Surge Current	<119A for 5 min / <200A for 15 sec
Depth of Discharge	90%
Cycle Life	≥6,000 cycles at 0.2C, 90% DOD
Communication	CAN / RS485
Parallel Connection	Up to 32 batteries
IP Rating	IP21
Dimensions	442 × 133.5 × 460mm
Weight	Approx. 46kg
Operating Temperature	-10°C to 50°C
Recommended Environment	15°C to 35°C
Operating Altitude	Below 3,000m
Certifications	CE, IEC62619, UN38.3, MSDS
Installation	Rack, wall, floor or stacked with applicable accessories

(Shopify)

Advanced Battery Management System

The QVWi battery incorporates a Battery Management System designed to monitor and protect the battery during charging and discharging.

Protection functions include:

Over-temperature protection
Electrical protection
Short-circuit protection
Battery isolation protection
Charge and discharge management
Communication with compatible solar inverters

The battery automatically protects itself if operating conditions move outside its permitted temperature range. (QVWi Shop)

Expandable Energy Storage

One of the major advantages of the QVWi rack battery is its modular architecture.

Up to 32 batteries can be connected in parallel, allowing the battery bank to grow as additional storage is required. (Shopify)

Typical configurations include:

1 Battery
5.12kWh nominal storage

2 Batteries
10.24kWh nominal storage

3 Batteries
15.36kWh nominal storage

4 Batteries
20.48kWh nominal storage

6 Batteries
30.72kWh nominal storage

8 Batteries
40.96kWh nominal storage

This makes the battery suitable for everything from essential-load backup to larger residential and commercial solar installations.

Ideal For

The QVWi 5.12kWh Lithium Battery is suitable for:

Residential solar systems
Hybrid inverter installations
Backup power systems
Off-grid solar systems
Small businesses
Offices
Retail premises
Farms
Larger modular battery banks
Loadshedding and power-outage backup
Solar self-consumption systems

Rack Mount Design

The professional rack-mount format keeps multiple batteries securely organised and allows larger battery banks to be installed cleanly.

A rack installation is especially useful where two or more batteries are used, providing a compact and professional solution while keeping communication and power cabling organised.

The manufacturer also supports wall-mounted, floor-mounted and stacked configurations when the appropriate additional mounting accessories are used. (Shopify)

Long-Life LiFePO4 Technology

LiFePO4 chemistry is widely used in modern solar energy storage because of its cycle life and thermal characteristics.

QVWi rates this battery for at least 6,000 cycles at 0.2C and 90% DOD, subject to the specified operating conditions. (Shopify)

For best performance and battery longevity, QVWi recommends an operating environment of approximately 15°C to 35°C. (Shopify)

Warranty

The QVWi product listing advertises the battery with a 10-year warranty. Warranty coverage remains subject to the manufacturer’s applicable warranty conditions, installation requirements and operating parameters. (QVWi Shop)

Important Installation Information

This battery must be installed and configured correctly by a suitably qualified solar installer.

Correct CAN/RS485 communication between the battery and inverter is important for accurate state-of-charge reporting, charge control, discharge management and battery protection.

Compatibility should always be confirmed against the specific inverter model and firmware before installation.