Curved Battery

Curved battery is a rechargeable lithium polymer battery with a curved or bent shape. It has an arc angle of typically 1° to 180 °. This curved battery is used in manufacturing wearable product prototypes. The wearable device appears lighter, more portable, and more comfortable using this component.

Curved Battery

ThinPack can manufacture curved batteries with excellent working voltage and safety. We offer different sizes, bending radii, and capacity range for unique customer requirements. Our team also supports OEM/ODM battery design and production.

Send us immediately your specific needs.


Voltage Capacity Thickness Inner Radius External Radius
3.7V 40 mAh 2.5mm 52.0mm 54.8mm
3.7V 80 mAh 2.8mm 16.6mm 19.4mm
3.7V 90 mAh 3.1mm 81.8mm 84.9mm
3.7V 125mAh 4.0mm 74mm 78mm
3.8V 235mAh 3.8mm 30.8mm 34.6mm

ThinPack Curved Battery Features

Parameters Specifications
Shape Curved compact
Operating voltage 3.7V average, 4.2 volts peak
Inner arc radius ≥ 8.0 mm
Inner arc length 15 mm – 100 mm
Width 6.0 mm – 100 mm
Length 20mm-80mm
Capacity range 80mAh to 400mAh
Temperature -50 ℃ to 50 ℃ / -20 ℃ to 80 ℃
Charging capacity up to 3C
Certifications UN38.3, CE, RoHS, IEC62133, MSDS, etc.
OEM Available

Wide Applications

Due to its compact design, larger capacity, and longer usage time, ThinPack curved battery is utilized in the production of several consumer electronics devices nowadays including:

  • Smart clothing
  • Bluetooth headsets
  • AR/VR headset
  • Smart ring
  • Smart bracelet
  • Smart google glass
  • Portable Bluetooth speaker
  • Wristbands, etc.

Why Choose ThinPack Curved Battery?

Thinpack uses premium raw materials, innovative battery cell design, and precision production procedures to achieve market-leading battery products. Our products have many advantages as stated below:

  • Low self-discharge
  • Achieve 0.5mm thickness
  • High-density energy
  • High working voltage
  • Lightweight
  • Highest level of safety


What are the curved battery safety certifications?

Thinpack always guarantees a fully certified battery before being delivered. Some are the following standard we comply:

  • UL
  • FCC
  • CE
  • RoHS
  • SGS
  • ISO, etc.

Can you produce curved batteries with a high discharge rate?

Yes. Depending on the discharge current of your device, you can select a suitable C rate from a range of 2C to 40C. Then, in order to produce it for you, we will adjust some manufacturing raw materials and technology.

What is your curved battery production lead time?

The lead time for battery samples is typically 4–7 days if we have the same or similar size battery cells in store. If there isn’t a stock, it will take two to three weeks to produce. For mass production, it typically takes 30 days

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