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3.8v lithium battery
What is a 3.8V Lithium Battery?
A 3.8V lithium battery is a high-voltage single-cell lithium-ion battery that offers a higher nominal voltage compared to standard 3.7V lithium batteries. Built on advanced lithium cobalt oxide (LCO) or high-voltage lithium polymer chemistries, 3.8V batteries deliver greater energy density and improved efficiency per cell. For B2B customers requiring compact, high-capacity energy solutions—especially in mobile electronics, communication devices, and next-generation wearables—3.8V lithium batteries provide an ideal platform to achieve longer runtime without increasing pack size.
Higher Voltage, Higher Energy Output
With a nominal voltage of 3.8V and a fully charged voltage of 4.35V, these lithium batteries offer increased energy storage per cell, resulting in longer device operation and reduced need for multi-cell configurations. This is particularly valuable for design teams seeking power-efficient solutions in slim formats. 3.8V lithium batteries also provide fast charging, stable discharge curves, and reliable cycle life ranging from 500 to 1000+ cycles depending on usage and charging strategy. Their lightweight structure and high voltage efficiency are ideal for modern electronics that require compact yet powerful power sources.
Custom 3.8V Lithium Battery Packs from KRL Power
As a professional 3.8V lithium battery manufacturer, KRL Power offers complete custom battery design and assembly services. We develop tailored battery solutions for OEMs and integrators requiring specialized sizes, capacities, and electrical configurations. Our 3.8V lithium battery offerings include:
- Lithium polymer cells with ultra-slim or curved designs
- High-voltage lithium-ion cells in pouch or cylindrical formats
- Integrated BMS/PCM for overvoltage, undervoltage, and temperature protection
- Protocols supported: SMBus, I2C, UART for smart battery communication
- Global certifications: UN38.3, IEC62133, CE, RoHS
With a strong focus on R&D, safety, and manufacturing scalability, KRL Power supports product development from prototype to volume production, ensuring smooth integration and timely delivery.
Send Your Inquiry Today
Working with KRL Power as your trusted 3.8V lithium battery manufacturer means partnering with an experienced team that understands your performance and integration needs. We offer flexible OEM/ODM services, fast production cycles, technical support, and global logistics capabilities. Our 3.8V lithium batteries are already deployed in projects across consumer electronics, smart medical, wireless communication, and embedded systems. With our deep technical knowledge, rigorous testing standards, and commitment to quality, we help you develop smarter, more powerful, and more reliable products—backed by batteries that deliver.
Why Choose 3.8V Lithium Batteries for Your Business?
Higher Voltage, Greater Efficiency, Smarter Integration
3.8V lithium batteries, typically built on high-voltage NCM (Nickel Cobalt Manganese) chemistry, offer a superior energy-to-volume ratio and optimized discharge performance compared to conventional 3.7V cells. For enterprise applications requiring compact but powerful energy solutions—such as premium consumer electronics, advanced medical equipment, and intelligent wearables—3.8V lithium batteries provide the perfect balance of performance, safety, and scalability. Here’s why they are trusted in industrial-grade product development:
Higher Voltage for Greater Output Efficiency
The 3.8V nominal voltage delivers more usable energy with fewer cells, enhancing power conversion efficiency and reducing internal losses. This is especially valuable for high-drain applications such as 5G terminals, smart cameras, and professional-grade handheld devices.
Higher Energy Density in Compact Size
Thanks to advanced NCM chemistry, 3.8V cells achieve greater energy storage per gram or cubic centimeter. This allows manufacturers to design slimmer, lighter products without sacrificing battery life—ideal for next-gen tablets, smart wearables, and wireless medical instruments.
Seamless Integration with Smart BMS/PCM Systems
Our 3.8V lithium batteries are fully compatible with intelligent battery management systems (BMS), offering real-time monitoring of voltage, temperature, and capacity. They support fast charging, voltage balancing, and enhanced thermal control for safer, smarter applications.
Full-Cycle OEM/ODM Customization with Global Compliance
We provide comprehensive customization services, including voltage, capacity, dimensions, discharge rate, connectors, and protection circuits. All batteries comply with international safety and transport certifications such as UN38.3, IEC62133, CE, RoHS, and MSDS, ensuring smooth global distribution and product compliance.
3.8V Lithium Battery Applications
Our 3.8V Lithium Battery solutions are designed for high-performance electronic and industrial systems that require a higher voltage platform, greater energy density, and more compact power architecture. Built with advanced lithium-ion chemistry (typically LiCoO₂/NMC-based), these batteries are widely used in modern smart devices, wearable electronics, and telecom equipment—enabling longer runtime, thinner form factors, and improved overall energy efficiency. Ideal for system integrators and OEMs seeking cutting-edge battery technology.
3.8V lithium batteries are commonly used in flagship smartphones and tablets, offering extended battery life and space-saving integration thanks to their high energy output.
Thanks to their ultra-thin pouch design and lightweight build, 3.8V cells are ideal for TWS earbuds, smartwatches, and fitness trackers, where compact size is critical.
With proven stability and safety, 3.8V batteries power portable medical tools like monitors, digital stethoscopes, and insulin pumps, where long runtime and portability are key.
These high-voltage batteries are also suitable for virtual/augmented reality headsets and micro projectors, which demand high performance and compact battery integration.
3.8V Lithium Battery Solutions for High-Voltage Efficiency and Performance
Looking for efficient power solutions without long lead times? Our 3.8V Lithium Battery series provides higher nominal voltage than standard lithium cells, offering improved energy output, longer run time, and excellent performance for advanced mobile devices, drones, and high-efficiency electronics.
As a professional manufacturer of 3.8V 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.
3.8V Lithium Battery – Frequently Asked Questions
What’s the main difference between a 3.8V and a 3.7V lithium battery?
3.8V batteries use high-voltage materials like LiCoO₂ and reach up to 4.35V when fully charged, offering higher energy density and longer runtime compared to 3.7V batteries.
Do I need a special charger for 3.8V lithium batteries?
Yes. A CC/CV lithium charger that charges up to 4.35V is required. Using lower-voltage chargers may lead to incomplete charging or safety risks.
Are 3.8V lithium batteries safe?
Our batteries incorporate mature materials and multi-layered BMS protections. They meet UL, CE, UN38.3, and other certifications to ensure safe performance even at higher voltages.
Can I customize battery size and capacity?
Absolutely. We offer full OEM/ODM customization including size, voltage, capacity, terminals, and communication protocols to match your exact product needs.
