3.7V Lithium Battery Manufacturer
What Are 3.7V Lithium Batteries?
3.7V lithium batteries are standardized, rechargeable Li-ion cells with a nominal voltage of 3.7 volts—commonly used across a wide range of consumer electronics, portable devices, and industrial applications. These batteries are pre-engineered for mass production and offered in popular formats like 18650, 21700, and pouch cells. Unlike fully customized battery packs, 3.7V lithium batteries are available off the shelf with validated designs and built-in protection, enabling lower costs and shorter delivery times. Large Power’s 3.7V battery lineup helps reduce engineering cycles and simplifies integration, offering dependable performance with faster project turnaround.
Product Categories
Large Power offers 3.7V lithium batteries in several industry-standard formats, primarily cylindrical and pouch types, designed for versatility and scalability.
Cylindrical 3.7V Lithium Cells
Our cylindrical 3.7V lithium-ion cells include the widely used 18650 and 21700 models. These cells feature robust cylindrical metal casings for enhanced safety and efficient heat dissipation.
- 18650 cells: 2,200–3,500 mAh capacity, ~3.7V nominal
- 21700 cells: 4,000–5,000 mAh capacity, with higher energy density
Cylindrical 3.7V batteries are ideal for:
- Power banks and portable electronics
- Flashlights, headlamps, and handheld tools
- Electric bikes and smart mobility devices
Their uniform shape supports dense packing and effective thermal control, making them a go-to choice for high-volume OEM applications.
Pouch 3.7V Lithium Cells
Pouch cells offer ultra-slim and lightweight battery designs with flexible sizing. Encased in aluminum-laminated polymer film, they provide better energy-to-weight ratios and customizable shapes.
Pouch 3.7V cells are commonly used in:
- Smartphones, tablets, and wearable electronics
- Medical devices and handheld diagnostic tools
- UAVs, GPS trackers, and ultra-thin consumer products
Large Power provides a variety of pouch cell capacities, tailored to your dimensional and power needs. Their soft construction allows for optimized battery module design in tight spaces.
Large Power: Trusted 3.7V Lithium Battery Manufacturer & Wholesaler
As a global leader in lithium battery manufacturing, Large Power has been producing and exporting high-performance 3.7V lithium batteries for over 20 years. Our factory-certified cells comply with key international standards such as UL, CE, UN38.3, and RoHS, and are widely trusted in commercial, medical, industrial, and consumer electronics markets.
We serve:
- Battery module assemblers who integrate 3.7V cells into customized packs
- Device OEMs seeking reliable power for their end-products
- Global distributors and wholesalers needing stable supply and bulk inventory
With strong R&D, automated production lines, and flexible OEM/ODM options, Large Power delivers safe, durable, and cost-effective 3.7V batteries at scale.
Key Advantages of 3.7V Lithium Batteries
3.7V lithium batteries have become a cornerstone of modern portable power solutions. Their unique combination of high energy density, stable output, long service life, and versatile design makes them indispensable across industries such as healthcare, consumer electronics, drones, and industrial equipment. Below are four standout advantages that define their exceptional performance:
High Energy Density
3.7V lithium batteries offer a high energy-to-weight and energy-to-volume ratio, making them ideal for compact and portable applications such as medical devices, wearables, and consumer electronics.
Stable Operating Voltage
With a nominal voltage of 3.7V and a flat discharge curve, these batteries provide consistent power output throughout most of the discharge cycle, ensuring stable device performance.
Long Cycle Life
High-quality 3.7V lithium cells can deliver 500 to 1000+ charge-discharge cycles under proper conditions, making them suitable for long-term industrial and commercial use.
Flexible Design and Broad Compatibility
Available in cylindrical, prismatic, and pouch formats, 3.7V lithium batteries can be easily configured into packs of various voltages and capacities. They are widely used in sectors such as healthcare, wireless systems, drones, and power tools.
3.7V lithium batteries are widely used in portable and implantable medical devices due to their high energy density, stable discharge characteristics, and compact size. Typical applications include:
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Patient monitoring systems (portable ECG, pulse oximeters)
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Infusion pumps and drug delivery systems
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Surgical tools (powered by lightweight battery modules)
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Wearable diagnostic equipment
Key advantage: Long operating time between charges, critical for continuous-use and life-supporting medical applications.
Get in Touch with Us
Looking for a reliable 3.7V lithium battery manufacturer? Large Power offers complete 3.7V battery solutions with competitive wholesale pricing, global logistics, and full technical support. Whether you need compact cells for consumer electronics or high-capacity batteries for e-mobility and industrial use, we have the right product for your application.
Contact our sales team today to request datasheets, pricing, minimum order quantities, or custom quotes for your 3.7V lithium battery needs.
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