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Custom Lithium Polymer Battery Manufacturer in China
Lithium polymer batteries are rechargeable batteries and one of our core products. We customize sizes and capacities for your products, and their high energy density and low self-discharge are highly favored by our customers.
They are widely used in mobile devices, wearable devices, remote-controlled drones, and laser shooting. Contact Hongyitai for a complete service from prototype to mass production.
High C Rate
3C and 5C high charging and discharging rate.
Customization
Flexible in size and capacity.
Lightweight
At same capacity, 40% lighter than other battery type.
Safety
More safer than other traditional batteries.
Popular Lipo Rechargeable Battery Types We Produce
Hongyitai has been manufacturing polymer batteries for over ten years, offering various battery systems including lithium cobalt oxide, NCM, and LMO, primarily producing 3.7V, 7.4V, and 11.1V batteries. We are equipped with comprehensive facilities: mixer, coating machine, calendaring, slitting winding, sealing, injection molding, vacuum drying line, formation, aging cabinet, OCV machine, and battery pack assembly line.
We have 10 professional sample engineers who, upon receiving your project proposal, will immediately evaluate specific battery solutions covering: voltage, capacity, internal resistance, size, price, and sample lead time.
1S Lipo Battery
The 1S polymer battery, also called a 3.7V lipo battery, is our most produced type of battery. It has a single series connection, a nominal voltage of 3.7V, and a charging voltage of 4.2V. Capacities range from 25mAh, 50mAh, 100mAh, 500mAh, 1000mAh, 3000mAh to 5000mAh, and even more. All our 1S lipo batteries support 3C, 5C, and 10C charging or discharging rates.
They have an aluminum-plastic film outer shell, are soft-pack, and are often integrated into miniature drones, toys, remote-controlled models, etc., connecting to the device’s motherboard via electronic wires or terminals (JST, Molex) to provide a stable power supply.
2S Lipo Battery
The 2S lipo battery consists of 2 lithium polymer batteries connected in series. Its nominal voltage is 7.4V (3.7V * 2), charging voltage is 8.4V, and discharge cut-off voltage is 6V. Typical capacities are 500 mAh, 1000 mAh, and 2000 mAh. They are commonly used in RC cars, drones, and some small electric devices.
Before connecting them in series, we rigorously match the two batteries to ensure they are from the same batch, with a voltage difference <30mV, a capacity difference ≤50mV, and an internal resistance difference ≤5%, to prevent performance degradation of the 2S battery pack due to a single cell malfunction.
3S Lipo Battery
This 3S lithium polymer battery pack consists of 3 pieces lithium polymer batteries connected in series, also known as a 3S1P li-polymer battery. Its nominal voltage is 11.1V (3.7V * 3), charging voltage is 12.6V, and discharge cut-off voltage is 9V.
It is primarily used in medium-to-high power models such as RC e-sliders, RC cars, boats, and heavy-duty crawler bikes, providing power to 12V portable power devices. We will also provide matching batteries and weld a 3S PCM protection board to ensure it has overcharge, over-discharge, and short-circuit protection functions. Click to learn how we produce lithium polymer battery.
Poly Battery Pack Technical Accessories & Assembly
Our process from polymer cell to finished battery pack involves the following 3 core steps:
1. Design. After our engineers evaluate the proposed solutions, we provide each customer with proprietary datasheets, circuit schematics, and structural diagrams, allowing you to easily see if they meet your application requirements.
2. Safety Validation. In addition to submitting third-party certifications (SGS, TUV), we conduct our own internal verification of capacity, internal resistance, cycle life, charge/discharge testing, and drop testing.
3. Instructions for Use. We recommend that all customers strictly adhere to the charge/discharge guidelines, storage conditions, safety labels, and recycling guidelines.
Grand New Lipo Battery Cell
This 3S lithium polymer battery pack consists of two lithium polymer batteries connected in series, also known as a 3S1P li-polymer battery. Its nominal voltage is 11.1V (3.7V * 3), charging voltage is 12.6V, and discharge cut-off voltage is 9V.
It is primarily used in medium-to-high power models such as RC e-sliders, RC cars, boats, and heavy-duty crawler bikes, providing power to 12V portable power devices. We will also provide matching batteries and weld a 3S PCM protection board to ensure it has overcharge, over-discharge, and short-circuit protection functions.
Safety Protection Circuit Board(PCM)
LiPo battery protection board monitors polymer battery voltage, current, and temperature to ensure battery safety and long lifespan. Learn lipo battery storage and safety warning.
Overcharge protection: When the charging voltage of a 3.7V battery exceeds 4.2V, the protection board activates, cutting off the charging circuit to prevent overheating and bulging.
Over-discharge protection: When the discharging voltage of a 3.7V battery is less than 3V, it also cuts off the circuit to prevent deep discharge and damage to the battery.
Overcurrent protection: It limits excessive current or short circuits; the protection board’s MOSFET cuts off the circuit to protect the battery and components.
Compact Quick Connector JST, Molex & XT
JST and Molex connectors are suitable for low-current polymer batteries, while XT connectors are suitable for high-current/high-power polymer battery packs.
JST connectors are primarily available with 1.25mm and 2mm pitch: JST-XH and JST-PH, suitable for 2A current systems.
Molex connectors are primarily available with 1.25mm and 2.54mm pitch, offering longer mating life and reliable locking.
XT30 / XT60 / XT90 are commonly used in 3S, 4S, and 6S drones and car models, and are industry-standard interfaces.
If you require other types of terminals, please contact us.
Our Lithium ion Polymer Battery Features
Lithium polymer batteries are a type of pouch cell lithium-ion battery, offering the following significant advantages over liquid batteries:
1. Safety: The aluminum-plastic film pouch, not a metal casing, minimizes the risk of bulging in the event of thermal runaway; it will not explode and swelling.
2. Ultra-thin: We can customize thicknesses down to 1mm, with any length and width to meet your specific space requirements.
3. High energy density: Lithium cobalt oxide batteries can reach 200Wh/kg, approximately 40% lighter than steel-cased batteries and 20% lighter than aluminum-cased batteries of the same capacity.
4. No memory effect: Pouch cells can be charged and used at any time; they have a low self-discharge rate when stored.
Hongyitai Polymer Battery Certifications & Reports
Our polymer batteries have all passed these certifications and reports, ensuring smooth sales for you. UN38.3 Air and Sea Transport Certificate: Meets the transportation requirements of all countries worldwide; IEC62133 Report: Primarily meets safety testing standards in Europe and the Middle East; UL1642 certification meets US safety standards; CE report is a prerequisite for entering the EU market; PSE report meets mandatory requirements in Japan; KC report meets the requirements of the Korean market.
Hongyitai Lithium Polymer Battery Applications
Our polymer batteries are highly favored by customers in Europe and America due to the advantages mentioned above, and they are mainly used in the following fields:
Consumer electronics: Bluetooth (TWS) earphones, wearable devices (watches, wristbands).
Drones and remote-controlled models: FPV racing drones, remote-controlled cars, boats, electric skis.
Medical instruments: patient monitors, blood pressure monitors, home diagnostic devices.
Smart home and security: smart door locks, pet tracking system, wireless cameras, sensors, emergency light.
Hongyitai Lipo Battery Bag Specific Voltage & Capacity & Sizes
Below is a list of some polymer battery models manufactured by our Hongyitai battery factory, including 3.7V, 7.4V, and 11.1V. You can contact us for a full specification sheet.
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 |
Model | Voltage (V) | Capacity (mAh) | Dimension (Thick*Width*Length) (mm) | Lifespan (25℃,0.5C,80%DOD) | Weight (Kg) | Protection Function |
|---|---|---|---|---|---|---|
HYT402050 | 7.4 | 350 | 8*20*50 | >500 | 13 | Yes |
HYT502535 | 7.4 | 400 | 10*25*35 | >500 | 14 | Yes |
HYT702030 | 7.4 | 450 | 14*20*30 | >500 | 22 | Yes |
HYT603030 | 7.4 | 500 | 12*30*30 | >500 | 22 | Yes |
HYT602248 | 7.4 | 600 | 6*22*48 | >500 | 23 | Yes |
HYT603040 | 7.4 | 900 | 12*30*40 | >500 | 40 | Yes |
HYT523450 | 7.4 | 1000 | 10.4*34*50 | >500 | 46 | Yes |
HYT202065 | 7.4 | 1350 | 4*20*65 | >500 | 50 | Yes |
HYT103763 | 7.4 | 2800 | 20**37*65 | >500 | 76 | Yes |
HYT705568 | 7.4 | 3200 | 14*55*68 | >500 | 78 | Yes |
HYT924565 | 7.4 | 3500 | 18*45*65 | >500 | 84 | Yes |
HYT805080 | 7.4 | 4000 | 16*50*80 | >500 | 120 | Yes |
HYT804046 | 7.4 | 1500 | 16*40*46 | >500 | 55 | Yes |
KHT904060 | 7.4 | 2200 | 18*40*60 | >500 | 65 | Yes |
HYT105050 | 7.4 | 3000 | 20*50*50 | >500 | 90 | Yes |
Model | Voltage (V) | Capacity (mAh) | Dimension (Thick*Width*Length) (mm) | Lifespan (25℃,0.5C,80%DOD) | Weight (Kg) | Protection Function |
|---|---|---|---|---|---|---|
HYT455050 | 11.1 | 1100 | 13.5*50*50 | >500 | 60 | Yes |
HYT603450 | 11.1 | 1200 | 18*34*50 | >500 | 54 | Yes |
HYT803450 | 11.1 | 1500 | 24*34*50 | >500 | 72 | Yes |
HYT704551 | 11.1 | 1800 | 21*45*51 | >500 | 80 | Yes |
HYT103450 | 11.1 | 2000 | 30*34*50 | >500 | 110 | Yes |
HYT853496 | 11.1 | 2200 | 25.5*34*96 | >500 | 145 | Yes |
HYT633496 | 11.1 | 2600 | 19*34*96 | >500 | 116 | Yes |
Best Lipo battery Charging & Storage Guide
To extend your lithium battery life, we recommend charging it within the range of 20%–80% capacity using a dedicated charger with the matched voltage, and avoiding charging in high or low temperature environments. When not in use for extended periods, we recommend maintaining the battery level at 40%–60% and storing it in a cool, dry place at 10–25 °C. Click here to read more battery charging and storage recommendations.
Why Choose Hongyitai as Lithium Polymer Battery Supplier
Choosing us Hongyitai as our lithium polymer battery factory in China ensures a consistent and stable production of high-quality batteries.
**Stable Product Quality:** All our production equipment is automated, significantly improving production efficiency and battery consistency, reducing the defect rate to 1%.
**Extensive Customization Experience:** With over 10 years of production experience and 100+ skilled employees, we can customize voltage, capacity, shape, and size according to your specific applications and needs.
**100K Daily Production:** Our Huizhou production plant boasts a stable supply chain, ensuring on-time delivery according to order schedules.
**Comprehensive Service Guarantee:** We strictly adhere to the requirements of your destination market, providing relevant certifications and reports to ensure you receive your batteries on time.
# Your Trusted Li-polymer Battery Supplier
Steps to Custom Lithium Polymer Battery Pack
Whether you need a small capacity of 50mAh to 500mAh, a medium capacity of 500mAh to 2000mAh, or more than 2000mAh, Hongyitai can design your specific lithium polymer battery model to ensure stable operation of your device.
Precise Lipo Battery Pack Manufacturing Process & Facilities
Our polymer battery manufacturing process is highly automated. Our core equipment includes batching, coating, winding, electrolyte injection, and formation testing. The cathode materials consist of lithium cobalt oxide, a conductive agent, and PVDF binder. Learn what lithium polymer battery are.
We use a winding production line. After cutting the electrode sheets to specific lengths, the positive and negative electrodes are wound into cylindrical shapes, injected with electrolyte, and then undergo secondary encapsulation, charging, and activation.
Next, the battery pack stage begins. This involves welding the protective board, electronic wires, and insulation to ensure battery quality. All batteries then undergo OQC testing and packaging.
Lipo Cell Battery Capacity Fast Calculator
Want to know what capacity battery can be manufactured within a limited size? Try our online quick calculator, which works for common lithium batteries from 50mAh to 5000mAh. Simply enter the battery’s length, width, and thickness to get the expected battery capacity.
Li-polymer Battery Capacity Calculator
* Disclaimer: This calculation is for reference only. Actual capacity may vary based on C-rate and manufacturing processes. Please contact our engineers for precise specifications.
FAQs for li-polymer batteries
Lithium polymer batteries can typically be charged 300-500 times, retaining about 80% of their capacity, and can last for about 2-3 years with frequent use (charging 2-3 times per week).
Yes, we recommend using a 0.5C rate charger to charge the battery to 4.2V, as this is the safest method.
We can send out lipo battery samples within 7 days and arrange for them to be shipped via DHL or UPS.
For a general lithium polymer order (less than 100K), our lead time is 25 days.
We offer a standard 12-month warranty covering manufacturing defects, and we can provide free battery replacement or repair services.
The C rating measures the discharge/charge rate relative to capacity (e.g., a 1000mAh battery can provide 1A of current for 1 hour at 1C); higher C values (e.g., 5C=5A) support power-intensive applications such as drones.
Yes, we offer high-voltage li-polymer batteries at nominal 3.8V (charged to 4.35V), ideal for extended runtime in custom applications.
