Stackable Energy Storage LiFePO4 Battery

This 5kW stacked lithium battery energy storage system combines a pure sine wave inverter with modular LiFePO4 battery storage from 5.12kWh to 25.6kWh. Designed for residential solar power systems, home backup power, small commercial energy storage, and off-grid or hybrid applications, it provides stable AC output, solar charging, battery charging, and reliable backup power for essential loads.

The system uses 5.12kWh stacked battery modules and supports flexible configurations from 1 to 5 modules. With 51.2V battery voltage, 48V inverter battery input, up to 5200W PV input, 120–500VDC MPPT range, 80A PV charging current, 60A AC charging current, pure sine wave output, 10ms transfer time, and CAN/RS485/RS232 communication, it is suitable for homes, villas, small offices, shops, farms, remote sites, and renewable energy backup projects.

Features

5kW Integrated Energy Storage Design

Combines a 5kW pure sine wave inverter with stacked lithium battery modules, providing solar power conversion, battery storage, AC charging, and backup power in one system.

5.12–25.6kWh Scalable Battery Capacity

The system supports 1 to 5 battery modules, offering total capacity options of 5.12kWh, 10.24kWh, 15.36kWh, 20.48kWh, and 25.6kWh.

5.12kWh Single Battery Module

Each battery module provides 5.12kWh capacity, making it easy to expand the system according to backup time and energy storage requirements.

LiFePO4 Battery Technology

Uses LFP / LiFePO4 battery chemistry, offering good safety, stability, cycle performance, and suitability for residential and light commercial energy storage systems.

51.2V Battery System

The stacked battery system uses 51.2V standard voltage with a working voltage range of 43.2–57.6V, supporting stable energy storage and discharge performance.

Pure Sine Wave AC Output

Pure sine wave output provides stable and clean AC power for household appliances, office equipment, routers, computers, lighting, refrigerators, and selected essential loads.

5kW Rated Output Power

The system provides 5000VA / 5000W rated output power, suitable for residential backup power and small energy storage applications.

10,000VA Peak Power

Peak power up to 10,000VA helps support short-term startup demand from selected appliances and motor loads.

On-Load Motor Capacity

Supports motor loads up to 4HP, depending on actual operating conditions and load characteristics.

High PV Input Capacity

Supports up to 5200W maximum PV input power, helping improve solar energy utilization for daily power supply and battery charging.

Wide MPPT Voltage Range

The MPPT voltage range of 120–500VDC allows flexible PV string design for different solar panel configurations.

500VDC Maximum PV Open-Circuit Voltage

Maximum PV open-circuit voltage is 500VDC, supporting high-voltage PV array input within the system limit.

80A PV Charging Current

Maximum PV charging current reaches 80A, helping charge the battery system efficiently when solar power is available.

AC Charging Support

Supports AC mains charging with up to 60A maximum charging current, allowing battery charging from grid or generator power.

Wide AC Input Range

Supports UPS mains mode: 170–280VAC ±2% and APL generator mode: 90–280VAC ±2%, improving adaptability to different utility or generator conditions.

50Hz / 60Hz Automatic Detection

Automatically detects 50Hz or 60Hz, making it suitable for different regional power systems.

Fast Transfer Time

Typical transfer time between bypass and inverter is 10ms, supporting reliable backup power for many household and office loads.

High Charging Efficiency

Mains charging efficiency is above 95%, helping improve overall energy performance during AC charging.

High Conversion Efficiency

Maximum inverter efficiency is above 90%, supporting efficient daily operation.

Communication Interfaces

Supports CAN, RS485, and RS232 communication, with optional WiFi or Bluetooth for convenient monitoring and system integration.

Stacked Installation

The stacked structure saves installation space and allows clean, modular system expansion without complex cabinet design.

IP20 Indoor Protection

IP20 enclosure protection is suitable for indoor installation environments such as utility rooms, garages, equipment rooms, and protected indoor spaces.

Low No-Load Loss

No-load loss can be reduced to ≤25W in energy-saving mode, helping improve standby energy efficiency.

Specifications

MODELLP-5.12KWHLP-10.24KWHLP-15.36KWHLP-20.48KWHLP-25.6KWH
5kw+5.12kwh5kw+10.24kwh5kw+15.36kwh5kw+20.48kwh5kw+25.6kwh
STACKED LITHIUM BATTERY
Single Module Capacity5.12kwh
Module Number1pcs2pcs3pcs4pcs5pcs
Total Capacity5.12kwh10.24kwh15.36kwh20.48kwh25.6kwh
Standard Voltage51.2V
Working Voltage43.2V-57.6V
Standard Discharge Current100A200A300A400A500A
Standard Charge Current50A100A150A200A250A
Suggested DOD80%
Humidity20%-60%
InstallationStacked
Enclosure ProtectionIP20
CommunicationCAN/RS485/RS232 (WiFi or Bluetooth Optional)
Product Size Per Unit620*550*480mm620*550*760mm620*550*1040mm620*550*1320mm620*550*1600mm
Net Weight Per Unit50kg80kg120kg150kg190kg
BATTERY INPUT
Battery TypeLFP
Rated Battery Input Voltage48V (Minimum Startup Voltage 44v)
Maximum Charge80A
Battery Voltage Range40Vdc-60Vdc±0.6Vdc (Under Voltage Warning/Shutdown Voltage/Over Voltage Warning/Over Voltage Recovery)
SOLAR INPUT
Maximum PV Open-circuit Voltage500Vdc
PV Working Voltage Range120-500Vdc
MPPT Voltage Range120-500Vdc
Maximum PV Input Current18A
Maximum PV input Power5200W
Maximum PV Charging Current80A
AC INPUT
Mains Maximum Charging Current60A
Rated Input Voltage220/230Vac
Input Voltage RangeUPS Mains Mode: (170Vac-280Vac) ± 2%; APL Generator Mode: (90Vac-280Vac) ± 2%
Frequency50Hz/60Hz (Automatic Detection)
Mains Charging Efficiency>95%
Switch Time (bypass and inverter)10ms (Typical Value)
Maximum Bypass Overload Current40A
AC OUTPUT
Output Voltage WaveformPure Sine Wave
Rated Output Voltage(Vac)230Vac (200/208/220/240Vac)
Rated Output Power(VA)5000 (4350/4500/4800/5000)
Rated Output Power(W)5000 (4350/4500/4800/5000)
Peak Power10000VA
On-load Motor Capacity4HP
Output Frequency Range50Hz±0.3Hz/60Hz±0.3Hz
Maximum Efficiency>90%
No-load Loss (Manual Setup)Non Energy-saving Mode: ≤50W; Energy-saving Mode: ≤25W

Applications

Residential Solar Energy Storage

Suitable for home solar systems, daily solar energy storage, and self-consumption applications.

Home Backup Power

Provides backup power for selected household loads such as lighting, routers, refrigerators, computers, TVs, fans, and small appliances.

Villas and Apartments

A practical energy storage solution for villas, apartments, and residential buildings requiring solar storage and backup power.

Small Office Backup Power

Supports small offices, workstations, network devices, routers, computers, printers, and essential office electronics.

Shops and Small Businesses

Suitable for shops, service counters, small retail stores, and business locations requiring reliable backup power.

Off-Grid and Rural Power Systems

Can be used in rural homes, farms, cabins, and remote sites where grid power is unavailable or unstable.

Hybrid Solar Power Systems

Works with solar panels, batteries, and AC input to improve energy availability and reduce dependence on unstable utility power.

Communication and Monitoring Equipment

Provides backup power for routers, communication equipment, surveillance systems, monitoring devices, and selected remote-site loads.

Emergency Backup Power

Supports essential loads during power interruptions, helping maintain basic electricity supply for homes and small facilities.

Frequently Asked Questions

What is this stacked lithium battery energy storage system used for?

It is used for solar energy storage, home backup power, off-grid power, hybrid solar systems, and small commercial backup power applications.

What battery capacity options are available?

The system supports 5.12kWh, 10.24kWh, 15.36kWh, 20.48kWh, and 25.6kWh configurations.

How many battery modules can be stacked?

The system supports 1 to 5 battery modules, with each module providing 5.12kWh capacity.

What battery type does this system use?

It uses LiFePO4 / LFP lithium battery technology, which is commonly used in energy storage systems because of its safety, stability, and long service potential.

What is the rated output power?

The system provides 5000W rated output power.

What is the peak output power?

The peak output power is 10,000VA, suitable for short-term surge demand from selected loads.

What is the maximum solar input power?

The maximum PV input power is 5200W.

What is the MPPT voltage range?

The MPPT voltage range is 120–500VDC.

What is the maximum PV charging current?

The maximum PV charging current is 80A.

Can this system charge from AC mains or generator?

Yes. It supports AC input charging with up to 60A maximum charging current. The APL generator mode supports a wider AC input range of 90–280VAC ±2%.

What output voltage does the system provide?

The rated AC output voltage is 230VAC, with selectable output options of 200 / 208 / 220 / 240VAC.

Does it provide pure sine wave output?

Yes. The system provides pure sine wave output, suitable for many household appliances, office equipment, routers, computers, and sensitive electronics.

What communication interfaces are available?

The system supports CAN, RS485, and RS232, with optional WiFi or Bluetooth communication.

Is this system suitable for outdoor installation?

The enclosure protection is IP20, so it is mainly suitable for indoor or protected installation environments.

What information is needed to choose the right configuration?

To recommend the right configuration, the following information is usually required: total load power, appliance list, required backup time, solar panel capacity, installation location, grid or generator availability, communication requirements, and whether future battery expansion is needed.