Battery from Dyness 576.0V TOWER T21 (21.31 kWh) with 21.31KWH capacity

Dyness TOWER T21 (21.31 kWh) (21.31 kWh) Battery System Commercial Battery High voltage 5 Years Product Warranty

The Dyness Tower T21 is a 21.31 kWh modular LiFePO₄ battery designed for residential and commercial energy storage. With high scalability, long cycle life, and strong power output, it ensures efficient solar self-consumption and reliable backup power.

Quantity	Minimum	Sales unit	Reviews	Availability	Price per pc.	Total price
4 pcs. 85 kWh	1 pcs. 21 kWh	Piece	20 Ratings	In stock, PL ID: 195043	Solartraders best price	Save up to 9%
41 pcs. 874 kWh	1 pcs. 21 kWh	Piece	1 Rating	In stock, DE ID: 192240	Prices for members only	Save up to 5%
2 pcs. 43 kWh	1 pcs. 21 kWh	Piece	6 Ratings	In stock, DE ID: 196629	Prices for members only	Save up to 4%
20 pcs. 426 kWh	1 pcs. 21 kWh	Piece	41 Ratings	In stock, CZ ID: 105852	Prices for members only	Save up to 4%
16 pcs. 341 kWh	1 pcs. 21 kWh	Piece	4 Ratings	In stock, PL ID: 161588	Prices for members only	Register for free
41 pcs. 874 kWh	1 pcs. 21 kWh	Piece	20 Ratings	In stock, PL ID: 168343	Prices for members only	Register for free

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Performance data

Type	Battery System
Capacity	21 KWh
Efficiency	95.0 %
Voltage	576 V
Voltage min	524 V
Voltage max	648 V

Measurements

length	1.500 mm
width	504 mm
Height	380 mm
weight	269 kg

Manufacturer warranty

Product warranty

5 years

Certificates

English

Data Sheet

Dyness Tower T21 (21.31 kWh) – Low Voltage Battery Storage

Product Overview

The Dyness Tower T21 is a modular low-voltage lithium iron phosphate (LiFePO₄) battery system designed for residential and commercial energy storage applications. With a nominal capacity of 21.31 kWh, it offers scalability, high power output, and a stackable floor-standing design.

Its long cycle life, broad inverter compatibility, and natural convection cooling make it a reliable solution for solar self-consumption, backup power, and peak shaving applications.

Technical Data & Specifications

Electrical Data

Battery Type: Lithium Iron Phosphate (LiFePO₄)
Nominal Voltage: 51.2 V
Nominal Capacity: 21.31 kWh
Usable Capacity: 19.2 kWh
Voltage Range: 42 – 58.4 V
Recommended Charge/Discharge Current: 50 A
Maximum Continuous Charge/Discharge Current: 100 A
Peak Discharge Current (15s): 120 A
Cycle Life: >6,000 cycles

Mechanical Properties

Dimensions (W × D × H): 600 × 380 × 1100 mm
Weight: 218 kg
Installation Type: Floor-standing, stackable design
Cooling Method: Natural convection

Operating Conditions

Charge Temperature Range: 0°C to 50°C
Discharge Temperature Range: -10°C to 50°C
Storage Temperature Range: -20°C to 60°C
Humidity: 5% – 95% (non-condensing)
Maximum Installation Altitude: 2000 m
Protection Rating: IP54

Compatibility & Scalability

Scalability: Up to 6 units in parallel
Communication Interfaces: RS485, CAN
Compatible Inverters: Works with major inverter brands

Certifications & Standards

Certification Standards: UN38.3, IEC62619, CE, UL1973, UL9540A

Key Features for Installers

✔ 21.31 kWh Modular Battery System – Stackable and scalable for flexible capacity expansion
✔ Long Cycle Life – Over 6,000 cycles at 25°C for extended durability
✔ High Power Discharge – Continuous 100 A and peak discharge up to 120 A (15s)
✔ Flexible Installation – Stackable design for optimized space usage
✔ Enhanced Safety – IP54 protection, natural cooling, and certified to international safety standards
✔ Broad Compatibility – Works with major inverter brands via RS485 & CAN communication

Why Choose the Dyness Tower T21?

The Dyness Tower T21 is a high-capacity, modular energy storage system designed for reliable backup power and solar energy optimization. Its scalability, safety, and compatibility make it an ideal choice for residential and commercial applications.

Dyness

Dyness is an enterprise founded in 2017 focusing on battery system integration R&D and manufacturing.
They specialize in grid tied and off grid LFP battery solutions for residential application in Europe, Australia, Africa, South America etc.