Ultra-Slim 3.7V 110mAh Battery AS013945 – Ideal Replacement for Smart Health Bandsa

High-quality AS013945 Li-Po Batteries designed specifically for ultra-thin smart wristbands and medical wearables.

Digital Battery

Table of Contents

3.7V 110mAh Li-Polymer Battery AS013945 – Ultra-Slim Rechargeable Cell for Smart Wristband Oximeters & Wearables

Designed specifically for compact wearables, the 3.7V 110mAh AS013945 Lithium Polymer battery features an ultra-slim profile measuring just 32×12.5×4.1mm. This cell is purpose-built for smart wristband pulse oximeters, fitness trackers, and miniature health monitors where space is at a premium. Delivering reliable power in a lightweight form factor, it is optimized for continuous, low-power SpO2 and heart rate monitoring without adding bulk to the device. It supports full OEM/ODM customization for wires, connectors, and PCB integration to match your exact engineering specifications.

Key Benefits for Smart Wristband Oximeters:

  • Precision Fit (32×12.5×4.1mm): The 4.1mm thickness allows this battery to fit seamlessly into the tight, curved chassis of modern smart wristbands, ensuring a comfortable, unobtrusive user experience.

  • Stable 3.7V Output: Provides consistent voltage regulation essential for accurate sensor readings, preventing data errors or unexpected shutdowns during critical health tracking sessions.

  • Optimized Capacity for Wearables: The 110mAh capacity strikes the perfect balance between size and runtime, supporting multiple days of typical use (intermittent SpO2/HR tracking) on a single charge.

  • Safety First: Engineered with integrated protection circuits against overcharging, over-discharging, and short circuits, ensuring safe operation for devices worn directly against the skin.

  • Flexible Customization: We offer tailored solutions for wire lengths, connector types (e.g., JST, Molex), and protection board layouts to integrate perfectly with your specific PCB design.

Technical Specifications at a Glance

Battery TypeLithium Ion Polymer Battery (Bare Cell)
Part NumberAS013945
Voltage @ Capacity3.7V @ 110mAh (0.37Wh)
Protection Circuit/ (Bare Cell)
Thermistor (NTC)/
Wires/ (Bare Metal Tabs)
Connector/
Dimensions (L x W x T)32mm x 12.5mm x 4.1mm
Charge Current0.2C to 0.5C (Standard Charge)
Discharge Current0.5C to 1.0C (Continuous)
Storage Temperature-20°C to +45°C

Perfect Applications:

  • Smart wristband pulse oximeters & SpO2 rings

  • Compact fitness trackers with vital sign monitoring

  • Miniature medical-grade wearable sensors

  • TWS earbuds and small IoT devices requiring slim power sources

Customization Services for Your Project

Need a specific connector (JST/Molex) or a different cable length? We offer full OEM/ODM customization to fit your PCB layout perfectly.
[Contact Us Today] to request a datasheet or sample for your next product design!

Related Products

More Batteries
Contact Us