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352020 round battery
352020 special shape battery

352020 special shaped round battery

Compact and efficient, the 352020 round-shaped lithium polymer battery offers 3.8V and 82mAh capacity, making it ideal for space-constrained wearable devices, smart rings, medical sensors, and IoT applications. Its stable voltage output and lightweight design ensure reliable performance in precision electronics where form and function both matter.

Additional information

Product Type

Round li-polymer battery
Model number

352020
Voltage (Nominal)

3.8V
Capacity (Nominal)

82mAh
Dimensions

3.5±0.2*20±0.5*20±2.5mm
Constant Discharge Current

Typically 0.5C-1C
Working Temperature

charge: 0-45℃; discharge: -20-60℃
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352020 special shaped round battery

Product description

Lithium Polymer (LiPo) batteries are lightweight, thin-profile rechargeable batteries widely used in modern electronics. Thanks to their flexible form factor and high energy density, they are ideal for space-constrained applications where performance and design matter.

Product features

  • High Energy Density: More power in a compact size

  • Ultra-Thin & Lightweight: Perfect for slim devices and wearables

  • Customizable Shapes & Sizes: Tailored to your device’s design

  • Stable Discharge Voltage: Consistent performance across cycles

  • Low Self-Discharge: Maintains charge even during long storage

  • Built-in Protection Circuit (PCM/BMS): Enhanced safety and battery life–It’s optional

Product details

352020

Basic Information

 Cell Dimension( thickness*width*length) 3.5±0.2*20±0.5*20±0.5mm
Charge voltage 4.35V±0.03V
Nominal voltage 3.8V
Nominal capacity 82mAh
Fully charge voltage 4.35V
Ship out voltage 3.8-4.1V
Battery specification Charge current Standard Charging:0.2C (16mA)
Rapid charge:1.0C(82mA)
Charging method Charge with constant current 0.2c to 4.35V, then charge with constant voltage 4.35V till until charge current is less than 0.01C
Standard discharge current 0.2C(16mA)
Max.discharge current 1.0C(82mA)
Discharge cut-off voltage 3.0V
Operating environment Charging:0℃~45℃
Discharging:-20℃~60℃
Storage temperature less than one month -20℃~40℃; less than half year -20℃~30℃
PCB&Wires&connector Optional
 Cycles 300-500 times
Warranty 12 months
Certificates ISO9001/ISO14001
Warning Do not overcharge, force charge, short circuit, disassemble, deform, heat, or place the battery near a direct flame. Any of the above actions could cause it to ignite, explode or become damaged.
Keep this battery out of the reach of children.
When storing the battery or throwing it away, be sure to cover it with tape.
Main Features Thin format, lightweight, flat size, and flexibility in design.
Easily customized, Energy density, High capacity.
Applications Wearable devices: smart watches, smart glasses, smart clothes, smart shoes.
Electric tools: saws, electric drill, electric toys, remote control devices.
Medical devices: portable electronic medical devices, hearing aids, electric wheelchairs.
IoT devices: sensor, GPS trackers, wireless modules and so on.

Product assemble

customize round battery

Why Choose LithoTop’s LiPo Batteries?

At LithoTop, we combine advanced manufacturing with expert engineering to deliver LiPo batteries that are safe, efficient, and perfectly matched to your product. With full customization, fast prototyping, and global delivery, we ensure your power solution meets every demand.

Frequently Asked Questions

LiPo batteries are lightweight, have a thin and flat form factor, support custom shapes, and offer high discharge rates. They’re widely used in drones, RC devices, smartphones, wearables, and medical equipment.

Yes, when properly designed with a protection circuit (PCM/BMS) and used within specified limits, LiPo batteries are safe. LithoTop applies strict quality control and includes safety mechanisms to ensure safe operation.

A typical LiPo battery lasts around 300–500 full charge cycles, depending on usage conditions, charge/discharge rates, and temperature. Proper care can extend the lifespan significantly..

Absolutely. LithoTop offers custom LiPo battery solutions, including voltage, capacity, size, connector type, and protection features—tailored to your product requirements.

Store in a cool, dry place between 20–25°C. Batteries should be partially charged (around 40–60%) and stored away from heat sources or direct sunlight. Avoid long-term full charge or full discharge storage.

Our LiPo batteries comply with major international standards, including CE, RoHS, UN38.3, MSDS, and more. Certification support is available based on your application and market.

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