SECONDARY BATTERY
Pin-Type Rechargeable Li-ion Batteries
Ultra-Compact Power for Next-Generation Devices.
- ICR37200C1
- ICR47200C2
- ICR47230C1
- ICR47230C4
- ICR47250C1
- ICR50450C1
Premium Quality
Engineered with advanced battery technology and strict quality standards for reliable, long-lasting performance
Battery Support
Expert engineering and technical support from concept and prototyping to manufacturing and integration
Custom Solutions
Capacity, size, and labeling fully customizable. OEM branding and custom spec engineering available.
Global Battery Manufacturing
Worldwide battery manufacturing capabilities with facilities and support networks across the USA and Asia
About This Product
PHD Energy provides pin-type rechargeable lithium-ion batteries for OEMs developing compact products where conventional battery formats take up too much space.
With diameters starting at just 3.65 mm, capacities from 16 mAh to 130 mAh, and fast-charging options up to 3C, our pin-type Li-ion battery platform is designed for applications including smart glasses, wearables, stylus pens, wireless audio devices, medical electronics, hearing devices, IoT sensors, and other space-constrained electronics.
From early product development to mass production, PHD Energy works with engineering and procurement teams on battery selection, design-in support, qualification, customization, and scalable manufacturing.
- 3.65–5.0 mm Diameter
- 16–130 mAh
- Up to 3C Charging
More Energy Where Every Millimeter Matters.
Pin-type rechargeable batteries give product designers another option when traditional cylindrical, pouch, or coin-cell formats don't fit the available space.
Their narrow cylindrical geometry makes it possible to place rechargeable energy into slender, curved, or highly space-constrained product architectures, while maintaining the performance required by modern portable electronics.
Ultra-Compact Diameter
Options starting at 3.65 mm diameter for extremely constrained product designs.
Fast Charging
PHD Energy pin-type cells support charging rates up to 2C–3C, depending on the model.
High Energy in a Small Footprint
Designed to maximize usable energy while minimizing the space occupied by the battery.
Durable Steel Construction
A robust metal enclosure provides mechanical strength and helps simplify integration into compact devices.
Low Self-Discharge
Designed to maintain stored energy during periods when the product is not continuously used.
Built for OEM Integration
PHD Energy can work with your engineering team around the electrical, mechanical, and production requirements of your device.
PHD Energy Pin-Type Li-ion Battery Series
Choose a Cell Around Your Product Design
Specifications
- Continuous Discharging Rate: 1C
- Discharging Temperature: −20 to 60 °C
- Charging Rate: 2–3C
- Charging Temperature: 0 to 45 °C
Storage Conditions
- Over 3 Months: −20 to 27 °C
- Less Than 3 Months: −20 to 35 °C
- Less Than 1 Month: −20 to 45 °C
- Humidity: ≤75% RH
| Model | Voltage | Capacity | Diameter | Length | Charge Voltage | Max. Charge | Max. Discharge | Status |
|---|---|---|---|---|---|---|---|---|
| ICR37200C1 | 3.8V | 16 mAh | 3.65 mm | 20 mm | 4.35V | 11.2 mA | 20 mA | Under Development |
| ICR47200C2 | 3.8V | 25 mAh | 4.65 mm | 20 mm | 3.45V* | 75 mA | 25 mA | EVT |
| ICR47230C1 | 3.8V | 25 mAh | 4.65 mm | 23 mm | 4.35V | 75 mA | 25 mA | Mass Production · UL1642 |
| ICR47230C4 | 3.8V | 30 mAh | 4.65 mm | 23 mm | 4.35V | 90 mA | 30 mA | DVT |
| ICR47250C1 | 3.8V | 30 mAh | 4.65 mm | 25.1 mm | 4.35V | 90 mA | 30 mA | Mass Production · UL1642 |
| ICR50450C1 | 3.95V | 130 mAh | 5.0 mm | 45 mm | 4.5V | 360 mA | 120 mA | In Planning |
More Than a Pin-Type Battery Supplier
Compact battery design requires more than finding a cell that fits.
PHD Energy works with engineering and procurement teams to evaluate the electrical, mechanical, integration, and production requirements behind compact rechargeable devices.
Battery Selection
Select the right pin-type Li-ion cell based on available diameter and length, capacity, runtime, load profile, and charging requirements.
Design-In Support
Bring PHD Energy into the development process early to evaluate battery placement, electrical requirements, charging conditions, and product constraints.
Mechanical Integration
Evaluate dimensions, orientation, connection requirements, available internal space, and other factors that affect integration into compact electronics.
Samples & Prototyping
Evaluate candidate pin-type cells in your product before moving into qualification and production.
OEM Manufacturing
Move from prototype to production with manufacturing support for compact rechargeable battery applications and growing volume requirements.
Long-Term Supply
Build a reliable supply strategy for your product with PHD Energy supporting ongoing production requirements beyond initial launch.
Where Pin-Type Batteries Fit
Built for compact products where every millimeter matters.
Wireless Earphones
Compact rechargeable power for space-constrained wireless audio devices.
Wristband Devices
Slim rechargeable power for compact wrist-worn electronics.
Smart Glasses
Lightweight power designed for space-limited connected eyewear.
Stylus Pens
Narrow rechargeable power ideal for pen-shaped electronic devices.
Hearing Aids
Compact rechargeable power for small, lightweight hearing devices.
Start Your Pin-Type Battery Project
Developing the Next Generation of Compact Electronics?
Bring PHD Energy into the project early.
Whether you're developing smart glasses, a stylus, wearable technology, medical electronics, wireless devices, or a new compact IoT product, our team can help evaluate a pin-type rechargeable Li-ion battery solution for your design.
Send Us Your Requirements
Frequently Asked Questions
What is a pin-type rechargeable Li-ion battery?
A pin-type rechargeable Li-ion battery is a very small cylindrical rechargeable cell designed for electronics where conventional battery formats may be too large. Its narrow shape makes it especially useful in products such as stylus pens, smart glasses, wearables, hearing devices, and wireless earphones.
What pin-type batteries does PHD Energy offer?
PHD Energy's current platform includes ICR37200C1, ICR47200C2, ICR47230C1, ICR47230C4, ICR47250C1, and ICR50450C1, covering approximately 3.65–5 mm diameters and 16–130 mAh capacities across development, validation, production, and planned models.
Does PHD Energy have pin-type batteries in mass production?
Yes. The ICR47230C1 and ICR47250C1 are currently listed by PHD Energy as in mass production and UL1642 certified.
Can PHD Energy support a pin-type battery for a new product?
Yes. PHD Energy works with OEMs on battery selection, integration, prototype development, qualification, customization, and manufacturing.
Can PHD Energy evaluate an alternative to our existing pin battery?
Yes. Provide the existing battery datasheet or part number along with your device requirements, and the PHD Energy team can evaluate potential options. Compatibility should be confirmed against the complete electrical and mechanical requirements of the product.
Submit your RFQ
What Happens Next
Submit your requirements and a PHD Energy engineer will contact you within 1 business day.
Share application, specs, volume, and timeline.
Our team evaluates your needs and prepares a tailored recommendation.
Get a detailed proposal including design options, pricing, and lead times.
We build, test, and refine until your solution is field-ready.