The 321014 28mAh 3.7V rechargeable small prismatic battery is a miniature lithium polymer pouch cell designed for electronic products where thickness, weight and internal space are critical factors.
Unlike conventional cylindrical battery formats, the pouch structure provides greater flexibility in product design, allowing engineers to better arrange the battery inside slim and compact devices. Its lightweight construction and stable energy output make it suitable for next-generation wearable and portable electronics.
Yideng manufactures small prismatic lithium batteries with controlled production processes to maintain consistent capacity, voltage performance and reliability between different batches. Standard cells are available for sample evaluation, while customized solutions can be developed according to customers' drawings or product requirements.
Beyond bare cell supply, Yideng supports integrated processing services including tab customization, protection circuit installation and wire assembly. These services help hardware manufacturers simplify battery integration and accelerate product development from prototype verification to mass production.
| Item | Specification |
| Model | 321014 |
| Material | Li-ion Polymer Battery |
| Normal Capacity (0.2C) | 28mAh |
| Minimum Capacity (0.2C) | 28mAh |
| Energy | 0.1036Wh |
| Normal Voltage | 3.7V |
| Delivery Voltage | 3.85V ~ 4.05V |
| Standard Charge Method | Charge at maximum current. When the battery or pack terminal voltage reaches the charging limit voltage, charge at constant voltage until the charging current is less than or equal to 0.02 C, then stop charging. |
| Discharge Program | The battery or the battery pack carries on the constant current discharge with the maximum discharge current to the discharge termination voltage. |
| Max Charging Current | 1C CC/CV → 0.02C cutoff |
| Max Discharging Current | 1C CC/CV → 3.0V cutoff |
| Over-Discharging Current | 3.0V |
| Operation Temperature Range |
Charging: 0°C ~ 50°C Discharging: -20°C ~ 60°C |
| Allowable Maximum Surface Temperature |
Charging: Tmax ≤ 50°C Discharging: Tmax ≤ 60°C |
| Storage T/H Range (time) |
-20°C ~ 60°C (Less than 1 month) -20°C ~ 45°C (Less than 3 months) -20°C ~ 25°C (Less than 1 year) |
| Cycle Life |
≥ 300 times (Thickness expansion rate ≤ 10%) ≥ 500 times (Thickness expansion rate ≤ 12%) |
The pouch cell design allows the 321014 battery to achieve a slim profile and lightweight structure, making it suitable for electronic products with strict space limitations. Compared with rigid cylindrical batteries, the flexible packaging design provides more possibilities for internal layout optimization.
Although designed in a small form factor, this 3.7V lithium polymer battery delivers stable voltage output and consistent discharge performance for low-power smart devices. The controlled manufacturing process helps maintain reliable battery behavior during daily operation.
Yideng supports customization according to customer application requirements, including:
- Tab position adjustment
- Protection circuit integration
- Wire and connector assembly
- Battery structure optimization
This flexibility allows manufacturers to match different product designs without major changes to their internal power architecture.
The combination of thin structure, low weight and reliable energy output makes this battery suitable for wearable and compact electronic products requiring efficient space utilization.
Typical applications include:
- Smart glasses
- Bluetooth wearable devices
- Mini sensors
- Smart rings
- Portable monitoring equipment
1. More than 2,000 customizable battery versions. Size, voltage, capacity and terminals can be modified as requested.
2. In-house developed intelligent BMS, improving safety, balancing charge and offering continuous protection.
3. Cost-effective pricing while maintaining quality. Steady annual production and punctual delivery guaranteed.
4. We hold full global certifications: CE, UL1642, CB, BIS, KC, ROHS, REACH, UN38.3, IEC62133.
5. Cooperate with worldwide famous brands. 24-hour technical support and a 1-year warranty are provided.
6. Possess 25+ official patents and 300+ certificates, qualified as a national high-tech enterprise.
Polymer lithium batteries are widely adopted as the core power supply for diversified portable electronic products. They can be applied to consumer digital devices such as laptops, tablets, cameras and action cameras, offering steady power support for outdoor shooting and mobile work. Wireless microphones, speakers and other audio equipment also depend on these batteries to realize wireless, cordless usage.
A great number of thermostatic heating products select polymer lithium batteries, including heated jackets, heated insoles and heated gloves, which provide continuous warmth for outdoor activities. Lightweight wearable electronics like smart rings also adopt this battery to achieve slim appearance and long standby time.
In the healthcare sector, various home medical devices including thermometers, pulse oximeters, blood pressure monitors and glucose meters are equipped with polymer lithium batteries. In addition, RC toys, walkie-talkies, power tools, smart door locks and other portable equipment all make use of this power source. Featuring high energy density, flexible shape and outstanding safety performance, polymer lithium batteries are an ideal power solution for modern wireless and portable electronics.
A1: Generally we don't provide free sample, but we can return sample cost when the buyer place the bulk order.
A2: It depends on the order quantities. Usually, we can deliver goods within 3 – 5 working days for small orders. For bulk order, let's confirm when you place official order.
A3: Payment terms: By T/T in advance, 30% for deposit, and balance all before shipment. For small amount, we also accept payment via PayPal.
A4: Normally, we ship our battery via DHL, UPS and FedEx.
A5: We have factory's current standard package, customized print logo shall be complied to buyer's requirements, and the extra charges will be borne by the buyers, for more details, please contact us.
A6: We are professional battery manufacturer with our own factory and brand. We provide all kinds of OEM/ODM services for clients all around the world.
Address
Xin'an Village industrial Park, Yonglejiang Town, AnrenCounty, Chenzhou City, Hunan Province, China
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