China Custom 3.7V Lithium Polymer Battery Factory
The 3.7V lipo batteries are our core product. Our factory, located in Huizhou, covers capacities from 30mAh to 5000mAh, with over 100 die-cutting processes. Our batteries are widely used in consumer electronics, lasers, wearable devices, monitoring systems, medical devices, and more.
We produce over 100,000 rechargeable batteries daily, providing a comprehensive service from evaluation, prototyping, certification, bulk orders, to after-sales support. Contact us for the latest polymer battery model list.
Single Battery
3.7 volt lithium ion battery as one power supply unit.
High Energy Density
up to 500Wh/L ~ 620Wh/L.
Long Life Cycle
more than 500 charge & discharge cycles.
Wide Work Range
-20 ~ 60℃ working temperature range.
Best Selling 3.7V Li-polymer Battery
Below is our typical 3.7V pouch battery. All batteries are equipped with a G3J Japanese Seiko IC protection circuit, providing multiple layers of safety protection for your device. We can also manufacture high-voltage 3.8V lipo batteries for you.
LP202018 3.7V 42mAh battery
Nominal voltage: 3.7V
Nominal capacity: 42mAh
Rated energy: 0.1554Wh
Charge current: ≤42mA
Peak discharge current: 42mA
Resistance: ≤200mΩ
LP602035 3.7V 400mAh battery
Nominal voltage: 3.7V
Nominal capacity: 400mAh
Rated energy: 1.48Wh
Charge current: ≤0.4A
Peak discharge current: 0.4A
Resistance: ≤300mΩ
LP301013 3.7V 120mAh battery
Nominal voltage: 3.7V
Nominal capacity: 120mAh
Rated energy: 0.444Wh
Charge current: ≤120mA
Peak discharge current: 120mA
Resistance: ≤200mΩ
LP702025 3.7V 300mAh battery
Nominal voltage: 3.7V
Nominal capacity: 300mAh
Rated energy: 1.85Wh
Charge current: ≤300mA
Peak discharge current: 600mA
Resistance: ≤200mΩ
LP602535 3.7V 500mAh battery
Nominal voltage: 3.7V
Nominal capacity: 500mAh
Rated energy: 1.85Wh
Charge current: ≤300mA
Peak discharge current: 500mA
Resistance: ≤400mΩ
LP902040 3.7V 650mAh battery
Nominal voltage: 3.7V
Nominal capacity: 650mAh
Rated energy: 2.405Wh
Charge current: ≤650mA
Peak discharge current: 650mA
Resistance: ≤250mΩ
Our 3.7V lithium polymer batteries commonly use LCO, NMC, and LMO as cathode materials, which determine the battery’s energy density, safety, and cycle life.
LCO, with the chemical formula LiCoO₂, has a layered structure, high energy density, and is expensive, making it suitable for small-capacity batteries (30mAh to 500mAh).
NMC consists of LiNi₂Mn₂Co₂O₂ (NMC111, NMC523, NMC622, NMC811), where Ni increases capacity, and Mn/Co improves stability and cost-effectiveness, making it suitable for medium-capacity batteries (500mAh to 2000mAh).
LMO, with the chemical formula LiMn₂O₄, has a spinel structure, is the safest, and is the cheapest, making it suitable for large-capacity batteries (2000mAh to 5000mAh).
Start to learn 3 batteires furhter comparsion.
Different 3.7V Lipo Battery Chemistry Selection: LCO, NMC & LMO
3.7 volt Lipo Battery Benefits
Our 1S 3.7V polymer battery uses a gel polymer electrolyte, which is safer and has higher energy density than liquid electrode electrolyte batteries. Its main advantages are as follows:
1. Ultra-thin and flexible design (1mm), customizable to any length and width to fit your compact space.
2. Low self-discharge rate (6% per month), allowing for worry-free storage.
3. Low internal resistance, our batteries support high-current (10C rate) discharge.
4. Long cycle life, retaining 80% of capacity even after a minimum of 500 cycles. You can find lithium battery dsicharge curve in details here.
Hongyitai 1S Lipo Battery Applications
Our lithium polymer batteries have a nominal voltage of 3.7V and an operating voltage range of 3V to 4.2V, allowing for high power output, making them particularly suitable for space-constrained environments.
Due to these characteristics, our 3.7V lipo batteries are widely used in TWS earbuds, power banks, medical devices and remote control models, CCTV camera systems, and smart home applications, providing lightweight, high-output power.
We can provide service and guidance starting from the prototype stage, helping you avoid pitfalls and quickly turn your ideas into best-selling products.
GPS Tracking System
Our 3.7V polymer rechargeable batteries are ideal as main or backup power for GPS devices (navigation, positioning, trackers, etc.). They are small, high-energy, and have stable output, perfectly matching the power consumption and size limitations of GPS modules.
They power the main control MCU and communication modules, enabling months of continuous use. Our lipo batteries can be customized in elongated or ultra-thin shapes for positioning on vehicles, luggage, personal items, and pets.
Mountain GPS devices or cycling computers typically use 1000mAh+ batteries; they have extremely low self-discharge, allowing you to work for 1-2 months on a single charge.
Tell us the dimensions of your GPS battery compartment, your expected battery life and power consumption, and we will provide you with the appropriate 3.7V polymer battery.
Blood Pressure Monitor
3.7V lipo batteries are suitable for home or portable blood pressure monitors (desktop/arm monitors), with a typical capacity of 300~1500mAh, allowing for hundreds of measurements on a single charge.
They provide stable voltage output, compatible with blood pressure pumps, sensors, and MCU power supplies, ensuring accurate test data.
Our polymer batteries will not bulge and comply with medical device certifications: CE, FDA, MSDS.
Surveillance CCTV Camera
Our 3.7V Li-polymer batteries are widely used in wireless surveillance cameras, powering home cameras with night vision and motion detection, supporting months of standby and recording.
Typical capacity used: 800~1200mAh, for pet monitoring. In low-power mode, a single charge can last for 3 months.
Plug and play; simply connect our battery to your main control board, then connect to an AC power source for long-term stable operation.
1S 3.7V Lipo Battery Specification
Browse our typical 3.7V pouch battery model list, covering 35mAh to 5000mAh. In addition to 3.7V batteries, we also manufacture 3.8V high-voltage batteries.
Model | Voltage (V) | Capacity (mAh) | Dimension (Thick*Width*Length) (mm) | Lifespan (25℃,0.5C,80%DOD) | Weight (Kg) | Protection Function |
|---|---|---|---|---|---|---|
HYT551430 | 3.7 | 180 | 5.5*14*30 | >500 | 4 | Yes |
HYT502025 | 3.7 | 200 | 5*20*25 | >500 | 4 | Yes |
HYT602035 | 3.7 | 400 | 6*20*35 | >500 | 8 | Yes |
HYT603035 | 3.7 | 600 | 6*30*35 | >500 | 12 | Yes |
HYT603048 | 3.7 | 950 | 6*30*48 | >500 | 17 | Yes |
HYT102050 | 3.7 | 1000 | 10*20*50 | >500 | 18 | Yes |
HYT103040 | 3.7 | 1200 | 10*30*40 | >500 | 21 | Yes |
HYT652025 | 3.7 | 250 | 6.5*20*25 | >500 | 5 | Yes |
HYT802540 | 3.7 | 850 | 8*25*40 | >500 | 15 | Yes |
HYT605080 | 3.7 | 3000 | 6*50*80 | >500 | 55 | Yes |
HYT102535 | 3.7 | 800 | 10*25*35 | >500 | 13 | Yes |
HYT103450 | 3.7 | 1800 | 10*34*50 | >500 | 40 | Yes |
HYT104050 | 3.7 | 2500 | 10*40*50 | >500 | 51 | Yes |
HYT303450 | 3.7 | 500 | 3*34*50 | >500 | 10 | Yes |
HYT452530 | 3.7 | 300 | 4.5*25*30 | >500 | 6 | Yes |
HYT503040 | 3.7 | 600 | 5*30*40 | >500 | 8 | Yes |
HYT603450 | 3.7 | 1100 | 6*34*50 | >500 | 20 | Yes |
HYT371168 | 3.7 | 220 | 3.7*11*68 | >500 | 4 | Yes |
HYT551035 | 3.7 | 150 | 5.5*10*35 | >500 | 3 | Yes |
HYT453535 | 3.7 | 500 | 4.5*35*35 | >500 | 10 | Yes |
HYT505080 | 3.7 | 2000 | 5*50*80 | >500 | 46 | Yes |
HYT501030 | 3.7 | 100 | 5*10*30 | >500 | 2.5 | Yes |
HYT452535 | 3.7 | 350 | 4.5*25*35 | >500 | 7 | Yes |
HYT555368 | 3.7 | 2500 | 5.5*53*68 | >500 | 50 | Yes |
How to Charge 3.7V Lipo Battery Without Charger
It is extremely dangerous to charge a 3.7V polymer battery without a dedicated charger, as this could lead to overcharging and explosion. Start to learn safely charge 3.7V lipo battery further information.
We recommend using the TP4056 module to achieve a precise CC/CV charging curve. This ensures constant current charging initially, followed by constant voltage charging once the battery voltage reaches 4.2V, until the circuit is disconnected at a 0.02C rate.
Custom & Wholesale 3.7V Li-polymer Battery at Hongyitai
We are a polymer battery factory in China, specializing in the custom and wholesale of 3.7V lithium polymer batteries. We can design the shape, voltage, capacity, and dimension for your unique products.
We offer 1C, 3C, 5C, and 10C charging or discharging rates, allowing our batteries to provide high power and fast charging without extra waiting.
For better service, we offer 3.7V battery solutions within one day and sample shipment within three days, ensuring you receive and verify the batteries as quickly as possible.
We provide high-quality batteries according to the certification and standards requirements of your destination country, and provide UL1642, UN38.3, CE, KC, MSDS, and RoHS reports.
FAQs for 3.7v pouch battery
Once our battery specifications are confirmed, we will complete 3.7V rechargeable battery samples within 3-7 days and ship them via DHL.
For orders of 3.7V lipo batteries under 100K, our lead time is 25 days.
All batteries shipped from Hongyitai come with a one-year warranty. If there are any quality defects, we will provide replacements or send you batteries free of charge.