Li-ion

VTC-INR21700-3S5P 11.1V 25Ah Li-ion Battery Pack for portable power stations, solar lighting systems, robotics power modules

Parameter	Specification
Model	VTC-INR21700-3S5P
Battery Type	Cylindrical Li-ion Battery Pack
Pack Structure	3S5P (21700 cells)
Nominal Voltage	11.1V
Nominal Capacity	25.0Ah (at 0.2C)
Energy Density	277.5Wh
Max Charge Voltage	12.6V
Standard Charge/Discharge Current	5A (0.2C)
Maximum Discharge Current	10A
Discharge Cut-off Voltage	8.25V
Internal Impedance	≤120mΩ
Over-current Detection	20±3A
Cycle Life	≥800 cycles (to 70% @ 0.2C)
Weight	1.2kg
Dimensions (Max)	66.0 * 76.0 * 110.0mm
Operating Temperature (Discharge)	-20°C to 60°C

Certification support for VTC-INR21700-3S5P 11.1V 25Ah Li-ion Battery Pack for portable power stations, solar lighting systems, robotics power modules

CB, CE, UL, UN38.3, MSDS, IEC61000, IEC62133, EU2023/1542

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Product overview

VTC-INR21700-3S5P 11.1V 25Ah Cylindrical Li-ion Rechargeable Battery Pack Manufacturer in China | Battery Manufacturers in China & Battery Supply Factory

The VTC-INR21700-3S5P is an 11.1V 25Ah Li-ion battery pack built with a 3-series, 5-parallel cylindrical 21700 cell structure for equipment that needs a compact 277.5Wh rechargeable power source. According to the product specification, the pack provides 25.0Ah nominal capacity when discharged at 5A to 8.25V, 24.5Ah minimum capacity, 12.6V maximum charge voltage, 5A standard charging current, 10A rapid charge current, 5A standard discharge current, and 10A maximum discharge current. The maximum pack dimension is 66.0*76.0*110.0mm, with internal impedance of no more than 120mohm and an approximate specification weight of 1.2kg. The protection circuit information lists an S8254AAV protection IC, six 4407 MOSFETs, over-charge, over-discharge, over-current, short protection, and 70°C overheat protection. VTCBATT can support this Li-ion battery pack through factory supply, sample development, connector and wire customization, protection circuit matching, labeling, OEM/ODM battery pack design, wholesale supply, and stable batch production for qualified equipment manufacturers and distributors.

01

21700 3S5P Core Structure (21700 3S5P Structure)

High-capacity cylindrical lithium-ion battery pack specifically designed for enclosed equipment power systems. Utilizing a 3-series 5-parallel (3S5P) configuration of high-quality 21700 cells, it not only optimizes space utilization but also provides sustained and stable power output (Nominal Capacity 25Ah, Rated Energy 277.5Wh).

02

Reliable Protection Circuit Design (Protection Circuit Design)

Features a high-standard built-in protection board (BMS) with an S8254AAV protection IC and six 4407 MOSFETs on the PCBA. This provides comprehensive protection against overcharge, over-discharge, overcurrent, and more, ensuring the safe operation of both the battery pack and the equipment.

03

Controlled Working Current

Boasts excellent current-carrying capacity, supporting 5A standard charging/discharging, and allowing for up to 10A rapid charging or maximum discharge current, flexibly meeting the power requirements of various application scenarios.

04

Comprehensive Factory Customization Support (Custom Pack Support)

Offers professional and flexible customization services, fully supporting personalized modifications for connector terminals, wire specifications, exterior labels, and protection circuits. This perfectly covers all needs from initial sample prototyping to full-scale mass production.

Technical insight

Product and application details

backup power units

The 800-cycle lifespan ensures long-term reliability for critical infrastructure that requires consistent energy availability over years of operation.

electric sprayers

A maximum 10A discharge current supports the high-draw motor requirements of electric sprayers during sustained continuous field use.

emergency lighting packs

The wide -20°C to 60°C operating range guarantees consistent performance in extreme environmental conditions typical for outdoor emergency fixtures.

industrial monitoring equipment

Compact dimensions of 66x76x110mm allow for easy integration into tight enclosures within industrial monitoring equipment without space constraints.

portable medical devices

The low 120mΩ internal impedance minimizes voltage drop under load, ensuring stable power delivery for sensitive portable medical devices.

portable power stations

A high 25Ah capacity provides substantial energy storage, enabling portable power stations to charge multiple devices during extended outdoor excursions.

robotics power modules

The 1.2kg weight offers an optimal balance between energy density and mobility, crucial for agile robotics power modules.

solar lighting systems

The 11.1V nominal voltage aligns efficiently with standard solar charge controllers, simplifying integration for off-grid solar lighting systems.

The VTC-INR21700-3S5P is an 11.1V 25Ah Li-ion battery pack built with a 3-series, 5-parallel cylindrical 21700 cell structure for equipment that needs a compact 277.5Wh rechargeable power source. According to the product specification, the pack provides 25.0Ah nominal capacity when discharged at 5A to 8.25V, 24.5Ah minimum capacity, 12.6V maximum charge voltage, 5A standard charging current, 10A rapid charge current, 5A standard discharge current, and 10A maximum discharge current. The maximum pack dimension is 66.0*76.0*110.0mm, with internal impedance of no more than 120mohm and an approximate specification weight of 1.2kg. The protection circuit information lists an S8254AAV protection IC, six

The VTC-INR21700-3S5P is an 11.1V 25Ah Li-ion battery pack built with a 3-series, 5-parallel cylindrical 21700 cell structure for equipment that needs a compact 277.5Wh rechargeable power source. According to the product specification, the pack provides 25.0Ah nominal capacity when discharged at 5A to 8.25V, 24.5Ah minimum capacity, 12.6V maximum charge voltage, 5A standard charging current, 10A rapid charge current, 5A standard discharge current, and 10A maximum discharge current. The maximum pack dimension is 66.0*76.0*110.0mm, with internal impedance of no more than 120mohm and an approximate specification weight of 1.2kg. The protection circuit information lists an S8254AAV protection IC, six 4407 MOSFETs, over-charge, over-discharge, over-current, short protection, and 70°C overheat protection. VTCBATT can support this Li-ion battery pack through factory supply, sample development, connector and wire customization, protection circuit matching, labeling, OEM/ODM battery pack design, wholesale supply, and stable batch production for qualified equipment manufacturers and distributors.

Factory capability

VTCBATT Production and Service

VTCBATT not only focuses on customized design and excellent service to meet the diverse demands of different customers, but also devotes itself to precise and standardized manufacturing in every process to ensure the highest-quality batteries. Meanwhile, VTCBATT provides comprehensive support from pre-sales to after-sales, focusing on customer feedback to establish long-term and win-win cooperation. VTCBATT professional sales and technical engineer teams will be your custom battery experts for reliable and responsive project support.

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Modern Manufacturing

From raw materials mixing to cell testing, VTCBATT adopts automated manufacturing processes to improve production efficiency and battery quality, safety, and reliability. The manufacturing process is monitored and tested before material moves to the next procedure.

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Trusted by Global Customers

Over the past 20 years, VTCBATT has built partnerships with customers in more than 50 countries. Reliable quality, responsive service, and tailored battery solutions support long-term cooperation with equipment manufacturers, distributors, and brands.