Custom 3.7v Battery Manufacturer in China
In applications with compact space and high power efficiency requirements, 3.7V lithium batteries have become the preferred solution for many portable devices, smart hardware, and medical electronic devices due to their high energy density, thin and light structure, and customizable design. It not only effectively reduces the weight of the equipment but also significantly improves the battery life, providing an ideal power solution for the development of high-performance, small-volume products.
As a Chinese battery manufacturer specializing in customization, we are well aware of the differences in structure, capacity, output characteristics, and certification requirements for various projects. We can provide precisely matched 3.7V lithium battery customization solutions tailored to customer circuit board layouts, shell sizes, and interface specifications. Our solutions support small-batch proofing and fast delivery, and we assist in obtaining UN38.3, IEC62133, and other certifications to help you efficiently complete product implementation.
3.7v Battery Model
4 Types of 3.7v Battery
3.7V 300mAh Ultra-thin Soft-Pack Lithium Battery
3.7v 1200mah High-Density Polymer Battery
3.7v 2500mah Small High Power Lithium Battery
3.7v 5000mah High Capacity Custom Lithium Battery Pack
Advantages of Our 3.7v Battery
In ultra-compact electronics, every millimeter matters. For devices where battery thickness defines the overall product profile, our precision-engineered ultra-thin 3.7V lithium batteries make truly slim designs possible.We achieve thickness control between 1.8 mm and 3.0 mm, far below the limits of conventional lithium cells, without compromising energy density or reliability. This is especially critical for smart cards, wearable medical patches, flexible sensors, and ultra-thin remote controls, where internal space is at a premium.
When your products need to perform flawlessly in sub-zero environments, our customized 3.7V lithium-ion batteries are the dependable choice. Designed for discharge down to -20 ℃ and charging at temperatures as low as -10 ℃, they deliver consistent performance where ordinary batteries fail.These does not only preserve a steady discharge platform in low temperatures but also prevent sudden drops in capacity or voltage, ensuring devices start instantly and operate without interruption — even during unexpected power cuts.
Our 3.7V lithium batteries are engineered not only for exceptional performance but also for full customization to meet the unique demands of your project. Whether for industrial, medical, or defense-grade systems, we can configure the battery exactly the way you need it.We offer integration with temperature sensors (NTCs), thermal fuses, and advanced communication interfaces such as I²C, SMBus, and CAN
If you need a battery that holds its charge for months without worry, our 3.7V batteries are the perfect choice. Designed with ultra-low self-discharge technology, they can be stored fully charged and still retain up to 90% of their capacity even after extended periods of non-use — losing less than 3% of power per month.This exceptional retention makes them ideal for medical monitors, sensors, security systems, and smart wearables — devices that must work the moment you need them. With less power loss, you’ll replace batteries less often, reduce maintenance time, and cut ownership costs, all while gaining greater confidence in your product’s performance.
A Benchmark of Automatic Lithium Polymer Battery Manufacturing Line
Known for precision,innovation and safety commitment,VTCBATT’s automated excellence in 3.7V battery production demonstrates in every process of electrode preparation,slitting and drying,cell stacking and assembly,electrolyte injection and sealing, formation and aging.
Authorized as National High-Tech enterprise,VTCBATT modern facility symbolizes a beacon of automatic lithium battery manufacturing.
Our 3.7V battery is very lightweight and high density, making it ideal for devices that demand “lightness, thinness, and durability.” It can be easily integrated into compact electronic products like Bluetooth headsets, smart bracelets, and portable medical devices, minimizing space while providing reliable power. If you’re developing a design-focused device without sacrificing battery life, this battery is an excellent choice—not only will it save space, but it will also ensure more stable and competitive performance.
Our 3.7V lithium batteries typically offer a stable cycle life of over 500 cycles under normal use. For extended battery life, avoid overcharging and over-discharging, and maintain good charging habits to effectively extend the battery’s lifespan. Our 3.7V batteries are particularly suitable for devices that require frequent charging but also demand high reliability, such as wearables, portable medical devices, and smart terminals. They offer peace of mind and durability, providing a truly reliable battery solution.
Conventional 3.7V batteries have a cycle life of over 500 cycles (at 80% residual capacity), with selected cells achieving over 800 cycles. We utilize a low self-discharge material system, achieving a monthly self-discharge rate of less than 3%, making it ideal for products requiring extended standby time, such as medical monitoring equipment, security alarms, and IoT sensors.
All of our batteries are equipped with a basic protection circuit (PCM) that supports overcharge, over-discharge, overcurrent, and short-circuit protection. High-end versions can be equipped with temperature control, balancing, and data transmission modules to enhance the overall safety level, making them particularly suitable for medical, industrial, and testing applications.
Some models support fast charging protocols (such as 1C-2C), enabling a full charge in under an hour, making them suitable for frequent charging or rapid power restoration. We can also configure appropriate fast charging protection boards and temperature control systems to ensure improved charging efficiency without compromising safety or battery life.
In applications such as medical equipment, security terminals, and industrial sensors that have particularly high safety requirements, the battery cannot afford to make any mistakes. Our 3.7V lithium battery has a multi-layer protection design. For example, when the temperature or pressure inside the battery rises abnormally, the explosion-proof valve will automatically release the pressure to avoid bulging or fire; high-strength aluminum-plastic film or steel shell packaging allows it to withstand impact and extrusion and is not easily deformed; we also use ceramic diaphragms and multiple protection circuits to effectively reduce the risk of short circuits or thermal runaway. It is also equipped with NTC temperature control and thermal fuse protection, which can quickly identify high temperature conditions, cut off the circuit in time, and prevent accidental expansion. This set of protection combinations not only improves the safety level of the battery itself, but also enhances your competitiveness among your peers.
Battery problems are unacceptable—whether it’s a power outage, overheating, or swelling. That’s why our batteries are designed with exceptional safety features: explosion-proof valves, temperature-controlled fuses, and NTC probes are standard features. These instantly detect anomalies and automatically shut down the circuit to prevent further failures. Furthermore, we support communication interfaces such as I²C, SMBus, and CAN, allowing you to connect to your control system and monitor battery temperature, charge level, cycle status, and more in real time. This allows for immediate alarm notifications to prevent potential problems. If you’re developing products like outdoor security equipment, handheld terminals, and portable testers, you’ll also need batteries that withstand pressure, drops, and impacts. Our battery cases, available in both aluminum-plastic and steel-shell versions, are lightweight yet durable, able to withstand a variety of field environments, and are particularly suitable for frequently used B-side devices. Furthermore, for export needs, we support international certifications such as IEC 62133, UN38.3, and UL2054, helping you obtain certifications smoothly, deliver quickly, and reduce the time and cost of repeated repairs.
