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Solar Lithium Stackable Battery 20kwh 51.2v/48v 400ah Deep Cycle

Reliable and Long-lasting 20kWh LiFePO4 Battery Solutions for Solar Energy Storage

The GSL Stackable LiFePO4 Solar Battery System is a modular and scalable energy storage solution designed for residential and commercial solar applications. Available in 5kWh and 10kWh modules, up to 16 units can be connected in parallel to reach a total capacity of 160kWh. With over 6,500 life cycles, a lifespan exceeding 10 years, and advanced BMS technology, this system delivers safe, reliable, and efficient power storage for various off-grid and hybrid inverter systems.

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Model No	GSL20000U
Voltage	51.2V
Capacity	400Ah
Energy	20.48kWh
Opertion Voltage	46-56Vdc
Max Charging Voltage	56Vdc
Max Charging Current	100A
Max Discharging Current	150A
Max Power	20480W
Dimension(L×W×H)	590435165mm*4
Weight	50kg*4
Cycle Life (25±2℃,0.5C/0.5C,80%EOL)	≥6500
Certification	IEC62619, CE-EMC, UN38.3, MSDS

Solar Lithium Stackable Battery 20kwh 51.2v/48v 400ah Deep Cycle 5

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Key Features:

Modular & Stackable Design: Each unit is part of a stackable battery system, available in 5kWh or 10kWh modules. Connect up to 16 modules in parallel to reach a total capacity of 160kWh, offering unmatched flexibility.

200Ah Lithium Battery Core: Built with premium-grade LiFePO4 200Ah lithium battery cells, providing consistent output, deep cycle performance, and thermal stability.

Over 6,500 Cycles & 10+ Years Lifespan: Enjoy long-term energy security with deep cycle durability and industry-leading cell chemistry.

Advanced Smart BMS Protection: The integrated Battery Management System ensures safe operation through overvoltage, short-circuit, overcurrent, and temperature control.

Wide Inverter Compatibility: Fully compatible with off-grid and hybrid inverters for homes, telecom towers, microgrids, and commercial setups.

Ideal Applicatons

Residential solar energy storage (on-grid/off-grid)

Commercial and industrial peak shaving systems

Telecom base stations and edge data centers

Off-grid cabins, farms, and microgrids

Backup power for critical infrastructure

What does “stackable battery” mean?

A stackable battery is a modular battery system where individual units (typically 5kWh or 10kWh) can be physically stacked and electrically connected in parallel to increase total energy capacity. It allows flexible scaling from 5kWh up to 160kWh, without rewiring or complex installation.

What is the actual usable capacity of this 20kWh battery system?

The system provides a total capacity of 20.48kWh, and thanks to the LiFePO4 chemistry’s stability, it supports up to 100% Depth of Discharge (DoD). That means nearly all 20kWh is usable, depending on system configuration and inverter settings.

How long does the battery last?

The battery system supports 6,500+ cycles at 80% DoD, which translates to 10+ years of daily use. Even after 10 years, the battery will still retain a large portion of its original capacity.

Can I expand the system in the future?

Absolutely. The stackable battery system allows you to add up to 16 units in parallel, reaching up to 160kWh. This makes it ideal for evolving energy needs or phased solar projects.

Is this 20kWh battery compatible with my solar inverter?

The system is designed for broad inverter compatibility, including Deye, Growatt, Victron, GoodWe, SMA, Solis, and more. If needed, we offer technical support for inverter matching and system configuration.

Is the battery safe? What protections are included?

Yes, safety is a top priority. The system includes an advanced BMS (Battery Management System) that provides:Overcharge/over-discharge protection;Short-circuit protection;Overcurrent protection;Temperature control;Communication interface (RS485 / CAN / WiFi)

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