Search the whole station

Custom Lithium Battery Packs for UAVs, Power Tools & More

Factory-Direct | High-Quality | Multi-Application

3.7V 20mAh curved lithium polymer battery model 150732 for smart rings and wearable devices
3.7V 20mAh curved lithium polymer battery model 150732 for smart rings and wearable devices
150732 Curved LiPo Battery 3.7V 20mAh
Bulk Packaging of 150732 Curved LiPo Batteries for Wholesale Export

Wearable Optimized – Designed to fit smart rings, health trackers, and compact electronics seamlessly.

Custom Curvature – Adjustable shape to meet the structural needs of different wearable designs.

Tailored Solutions – OEM/ODM customization for capacity, connectors, and form factor.

Online Procurement
Name*
Email Address*
TEL*
Company/Unit Name*
Quantity*
Content*
Submitting…
Submission Successful! We will arrange the connection shortly.
Submission Failed! Please try again later.
Invalid Email Address!
Invalid Phone Number!

3.7V 20mAh 150732 Curved Polymer Lithium Battery,Smart Wearable Ring Battery / Special-shaped Lithium Battery

The 150732 3.7V 20Ah curved polymer lithium battery is perfect for all kinds of wearables—smart rings, bracelets, Bluetooth headsets, heart rate monitors, pressure meters… you name it. Because it’s curved, we can tweak the shape, thickness, and bend to fit your device perfectly.

We love making custom batteries that match your product’s size, design, and performance needs. That’s our thing—so if you’ve got an idea, let’s talk!

It works great in smart rings, watches, bands, clothing, AR/VR gear—basically anything wearable that needs a small but powerful battery. The curved design helps you use every bit of space, giving you more capacity and longer battery life.

Want a sample or a custom battery for your project? Hit us up—we’re ready to make it happen.

3.7V 20Ah Curved Lipo Battery Specifications

Voltage

  • Standard Output3.7V stable power for wearable devices.
  • Consistent Keeps devices running smoothly.

Capacity

  • Compact 20–22mAh for basic smart functions.
  • Efficient Optimized for small devices.

Dimensions

  • Arc Shape 30.7 × 7.1 × 1.52 mm fits rings and bands.
  • Space SavingMaximizes internal space.

Weight

  • Lightweight Only 0.55g, easy to wear.
  • Comfortable Won’t affect hand movement.

Charge & Discharge

  • Charge Rate 0.5C safe charging.
  • Discharge Rate 1C fast discharge

Cycle Life

  • Durable500+ cycles
  • Reliable Maintains capacity over time


SpecificationDetails
Voltage3.7V
Capacity20–22mAh
Weight0.55g
Standard Charge Rate0.5C
Fast Discharge Rate1C
Dimensions (L × W × T)30.7 × 7.1 × 1.52 mm
Cycle Life500+ cycles
Outer Skin ColorBlack (Silver optional/customizable)

3.7V 20Ah Curved Lipo Battery FAQ

Which devices can use this battery?

Ideal for smart rings, bracelets, smartwatches, health monitors, Bluetooth headsets, and other compact wearable electronics.

Can the battery curvature be customized?

Yes, we can adjust the thickness and curve according to your device’s design to ensure a perfect fit.

How long does it last on a single charge?

Depends on the device’s power consumption. For most small smart rings, it can last a full day of monitoring.

What colors are available?

Default is black. Silver or other colors can be customized according to customer requirements.

Is it safe to use?

Yes, high safety with standard charge/discharge rates, fully tested for long-term wearable use.

Do you support bulk orders?

We offer factory-direct bulk supply, perfect for B2B clients and OEM projects.

Electric Bike 36V 10Ah Water Bottle Style18650 ...

Electric Bike 36V 10Ah Water Bottle Style18650 Lithium Battery Pack

September 9, 2025

High-performance 36V 10Ah water bottle lithium battery for electric bikes. Lightweight 3.5kg, fast charging in 1.5–2 hours, safe & durable with up to 500 cycles. Ideal for commuting and long rides.

18650 24V 4000mAh Rechargeable Lithium Ion Batt...

18650 24V 4000mAh Rechargeable Lithium Ion Battery Pack

August 30, 2025

high-performance 18650 Battery 4000mAh, offering stable 24V power and deep cycle support. Perfect for electric scooters, power tools, and energy storage systems. Built-in safety protections ensure long-lasting, reliable performance.

ICR 18650 3.7v 2200mAh Li-ion Battery

ICR 18650 3.7v 2200mAh Li-ion Battery

August 18, 2025

Wholesale ICR 18650 2200mAh 3.7V lithium batteries with optional customized packs. Supports external wiring and various wire leads to meet your project-specific needs.

18650 3.7V 1500mAh Lithium-Ion Battery

18650 3.7V 1500mAh Lithium-Ion Battery

August 8, 2025

18650 3.7V 1500mAh lithium-ion rechargeable batteries from China, ideal for flashlights, power banks, electric tools, and more. High capacity, long cycle life, full safety features, and customizable OEM/ODM services. Fast global shipping available.

18650 3.7V 3000mAh lithium-ion batteries

18650 3.7V 3000mAh lithium-ion batteries

August 8, 2025

Top-quality 18650 3.7V 3000mAh lithium-ion batteries ideal for electric scooters, power tools, cameras, and more. Long cycle life, stable performance, and customizable options. Fast shipping worldwide. OEM & ODM services available.

Li ion 3.7V 2300mah 18650 Lithium Battery

Li ion 3.7V 2300mah 18650 Lithium Battery

August 8, 2025

High-quality 18650 3.7V 2300mAh lithium ion batteries perfect for flashlights, vape mods, electric scooters, and power banks. Long cycle life, built-in safety features, and flexible OEM/ODM customization available. Fast shipping and competitive pricing for wholesale buyers.

18650 3.7V 3300mah Lithium ion Battery Recharge...

18650 3.7V 3300mah Lithium ion Battery Rechargeable

August 8, 2025

Buy high-quality 18650 3.7V 3300mAh rechargeable lithium-ion batteries ideal for smartphones, tablets, power banks, and electronic devices. Durable, safe, and customizable with built-in protections. OEM & ODM services available. Fast shipping for wholesale orders.

18650 2000mAh 3.7 Volt Lithium ion Battery

18650 2000mAh 3.7 Volt Lithium ion Battery

August 8, 2025

China-made 18650 2000mAh 3.7V lithium-ion batteries, perfect for laptops, power tools, and electric vehicles. Reliable, safe, rechargeable with customization options. Wholesale pricing and fast delivery.