18.5v lithium battery
What is an 18.5V Lithium Battery?
An 18.5V lithium battery is a rechargeable battery pack made by connecting five 3.7V lithium-ion cells in series (5S configuration). With a nominal voltage of 18.5V and a full-charge voltage of 21.0V~21.5V, this battery configuration is designed for medium- to high-power portable electronics and industrial devices. It offers higher output compared to 14.8V or 11.1V systems, making it ideal for applications requiring greater voltage stability, energy density, and runtime. As a professional 18.5V lithium battery manufacturer, Large Power delivers high-performance packs tailored to your operational and environmental needs.
Power and Efficiency for Demanding Systems
18.5V lithium batteries are engineered to deliver reliable energy in compact form factors, with advantages like flat discharge curves, high current output, and fast charging capability. These packs reduce the need for bulky multi-cell configurations while supporting efficient power delivery to motors, processors, or wireless modules. With proper battery management systems (BMS), 18.5V packs ensure long cycle life (typically 500–1000+ cycles) and maintain safe operation under various loads, even in mobile or rugged environments.
Custom 18.5V Lithium Battery Packs from Large Power
As a leading 18.5V lithium battery manufacturer, Large Power offers custom battery packs with flexible capacity ranges, form factors, and electronic protection features. We support lithium-ion cylindrical cells (e.g. 18650, 21700) and pouch formats, combined with BMS features like overvoltage, undervoltage, temperature, and short-circuit protection. Optional smart communication protocols such as SMBus, CAN, and I2C are available. All packs are built to meet UN38.3, IEC62133, CE, RoHS, and other relevant certifications, ensuring global compliance and seamless integration into your systems.
With over 20 years of lithium battery expertise, Large Power is a trusted 18.5V lithium battery manufacturer serving clients in industrial automation, aerospace electronics, medical devices, and intelligent systems. We provide OEM/ODM solutions, from prototyping and design support to batch production and international logistics. Our commitment to quality, performance, and safety ensures your battery packs deliver consistent, certified, and scalable power—backed by responsive engineering and reliable supply.
Why Choose 18.5V Lithium Batteries for Your Business?
Industrial-Grade Power for High-Voltage, Precision-Driven Applications
18.5V lithium batteries—configured with five 3.7V cells in series (5S structure)—offer a mid-to-high voltage solution for compact devices requiring consistent, reliable energy. These batteries are ideal for professional-grade tools, military-grade electronics, advanced communication systems, and smart security platforms. Backed by smart protection and long-term performance, 18.5V lithium batteries provide a trusted foundation for enterprise-scale deployment.
Stable 5S Configuration for Demanding Power Systems
The 18.5V platform offers the perfect balance between voltage and size, supporting high-performance functionality in compact and portable industrial systems. It’s commonly used in handheld analyzers, UAV controllers, radar instruments, and critical power tools where stable output is essential.
Intelligent Battery Management for System Protection
All our 18.5V battery packs integrate a BMS or PCM that ensures real-time monitoring and safety—protecting against over-voltage, over-current, short circuit, and temperature anomalies. This is crucial for medical, military, and field equipment requiring uninterrupted operation in diverse conditions.
High Energy Density with Extended Cycle Life
Using high-grade cylindrical or polymer cells, 18.5V lithium batteries provide excellent energy-to-weight performance with over 1000–2000 charge-discharge cycles. This ensures lower replacement frequency and enhanced cost-efficiency for commercial and government equipment providers.
Flexible Customization for OEM/ODM Needs
We offer full customization of voltage, capacity, pack size, connectors, discharge rate, casing materials, and smart communication protocols (SMBus, I2C, CAN). Whether you’re integrating into a ruggedized device or building modular systems, we deliver tailored solutions that meet your technical and branding requirements—fully certified for global use (UN38.3, CE, IEC62133, RoHS, MSDS).
18.5V Lithium Battery Applications
Our 18.5V Lithium Battery solutions—based on a 5-cell (5S) lithium-ion or lithium-polymer configuration—are engineered for advanced equipment requiring higher voltage, stable output, and compact energy delivery. With smart BMS integration, long cycle life, and customizable capacity, these batteries are ideal for OEMs and system developers across medical technology, portable instrumentation, communication, and mobility sectors. Whether for embedded electronics or field-ready devices, our 18.5V batteries offer reliability, precision, and safety in every charge.
Commonly applied in portable testers, inspection devices, and maintenance tools, the 18.5V battery delivers stable power for prolonged field operations.
Used in ventilators, portable ultrasound machines, and patient monitors where battery safety, endurance, and compactness are critical.
Powers remote control units, emergency lighting, and communication relays, especially in challenging deployment scenarios.
Enables efficient operation of service robots and AGVs (Automated Guided Vehicles), supplying stable propulsion and communication power.
18.5V Lithium Battery Solutions for High-Voltage Portable Applications
Looking for efficient power solutions without long lead times? Our 18.5V Lithium Battery series features a 5-cell configuration that provides stable high-voltage output, long cycle life, and reliable safety performance, ideal for professional-grade equipment, robotics, and aerospace-related systems.
As a professional manufacturer of 18.5V lithium batteries, we ensure reliable supply, competitive pricing, and expert technical support. Whether you need samples for evaluation or bulk procurement for mass production, we are ready to support your business.
Submit your application requirements now, and our team will match you with the right battery solution efficiently.
18.5V Lithium Battery – Frequently Asked Questions
How many cells make up an 18.5V lithium battery?
It typically consists of five 3.7V cells connected in series (5S), with a fully charged voltage of about 21V.
Can an 18.5V battery replace a 12V or 14.8V system?
It is not recommended without confirming compatibility. You may need to adjust your power system accordingly.
What parameters of the 18.5V battery can be customized?
Customizable options include capacity, cell type, discharge rate, casing, BMS, voltage, connectors, and communication protocols.
Can the 18.5V battery be paralleled to increase capacity?
Yes, it supports parallel configurations to expand capacity, provided the BMS and protection circuits are properly designed.
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