GEB 501215 3.7V 50mAh Lithium Polymer (LiPo) Battery Cell (5×12×15mm)
Grade-A GEB 501215 3.7V 50mAh Lithium Polymer (LiPo) Battery Cell (5×12×15mm) (3.7V, 50mAh) pouch cell engineered for Ultra-compact wearable devices, smart rings, Bluetooth earbuds, medical biosensors, and IoT asset trackers with ultra-low IR, optional PCM circuit, and UN38.3 documentation where applicable.
B2B Engineering Review & Pricing
Direct manufacturer supply, custom BMS telemetry, and CAD fit validation for OEM/ODM projects.
Product Details
The GEB 501215 3.7V 50mAh Lithium Polymer (LiPo) Battery Cell (5×12×15mm) is an ultra-compact Grade-A pouch lithium polymer solution delivering a stable 3.7V nominal working voltage and 50mAh rated capacity (0.185Wh). Engineered specifically for space-constrained sub-gram wearable electronics, this cell utilizes an ultra-thin aluminum-laminated barrier pouch with low self-discharge chemistry and integrated over-discharge safety design. Ideal for smart rings, true wireless (TWS) earbuds, biosensors, and wearable medical monitors, mechanical engineers should allow an 8%–10% thickness clearance buffer (0.4mm–0.5mm) in battery compartments to accommodate standard pouch swelling across cyclic life.
Product Overview
The GEB 501215 3.7V 50mAh Lithium Polymer (LiPo) Battery Cell (5×12×15mm) is an ultra-miniature flexible pouch lithium cell precision-crafted for next-generation smart wearables and micro IoT nodes. Delivering 3.7V nominal voltage and 50mAh rated capacity, this cell features micro-precision winding/stacking technology and high-purity electrolyte to achieve exceptional volumetric energy density in a miniature footprint. With compact physical dimensions of 5.0 × 12.0 × 15.0 mm (±0.3mm) and an ultralight unit weight of Approx. 1.2g ± 0.2g, it fits seamlessly into smart rings, micro wireless headsets, biosensors, and GPS asset micro-tags. Optional integrated Seiko PCM circuits provide comprehensive protection against overcharge, over-discharge, and external short circuits.
Product Specifications
| Feature / Attribute | Technical Specification |
|---|---|
| Battery Chemistry | Lithium Cobalt Oxide Polymer (LiCoO2 / LCO Pouch) |
| Nominal Voltage & Capacity | 3.7V / 50mAh (0.185Wh) |
| Physical Dimensions & Weight | 5.0 × 12.0 × 15.0 mm (±0.3mm) / Approx. 1.2g ± 0.2g |
| Continuous Discharge Rating | 1.0C (50mA continuous discharge) |
| Peak Pulse Discharge | 2.0C (100mA pulse ≤ 5s) |
| Target Applications | Smart rings, Bluetooth earbuds, medical biosensors, hearing aids, wearable health trackers |
| Standard Terminals | Bare nickel tabs / optional PCM with micro JST, Molex, or fine gauge leads |
| Baseline Cycle Life | ≥ 500–800 cycles (@ 80% DoD, 25°C, 0.5C/0.5C) |
Technical Specifications
| Parameter | Value | Test Conditions & Engineering Tolerances |
|---|---|---|
| Nominal Voltage | 3.7V | Standard measurement @ 25°C, 0.2C discharge |
| Upper Charge Voltage Cutoff | 4.20V ± 0.02V | CC/CV charge mode, 0.02C termination current |
| Discharge Lower Cutoff | 3.00V ± 0.03V | PCM / Controller automatic low-voltage cutoff |
| Standard Charge Current | 0.2C – 0.5C (10mA to 25mA) | Max recommended fast charge: 1.0C (50mA) |
| Internal AC Resistance (1kHz) | ≤ 90 mΩ | 1kHz AC test @ 25°C fully charged state |
| Cell Consistency Screening | ΔV ≤ 3mV | ΔR ≤ 1.5mΩ | Pre-assembly automated barcode classification |
| Operating Temperature Range | Charge: 0~45°C | Discharge: -10~55°C | Storage: 15~25°C (60% SoC storage) |
Equipment Compatibility & Engineering Fit Check
Before deploying GEB 501215 3.7V 50mAh Lithium Polymer (LiPo) Battery Cell (5×12×15mm), verify these verified electrical and mechanical boundary requirements:
Operational Boundary Conditions
✔ Recommended Fit & Use Cases:
- Electronic devices and OEM packs matched with 3.7V / 50Ah power curves.
- Commercial designs requiring high volumetric energy density and predictable discharge curves.
- Projects requiring batch consistency with automated barcode impedance sorting.
⚠ Operational Constraints & Limits:
- Do not discharge below minimum cutoff voltage or charge beyond 4.2V.
- Maintain operational surface temperature within -20°C to +60°C discharge (0°C to +45°C charge).
- Ensure connector polarity and pin assignment match system schematics prior to initial power-up.
First-Party Manufacturing SOP & Export Compliance
Technical Whitepapers & Engineering Guides
What is a LiPo Battery [2026 Complete Engineering Guide]
In-depth overview of polymer chemistry, pouch packaging safety, high energy density, and custom geometric form factors.
Understanding S, P, and C in LiPo Battery Specs Explained
Clear technical guide to cell series/parallel architectures, voltage multiplication, and continuous vs burst discharge ratings.
How to Compare High C-Rate LiPo Battery Suppliers: A B2B Buyer’s Guide
B2B buyer's guide to comparing high C-rate LiPo battery suppliers. Audit discharge curves, voltage sag, IR sorting, thermal rise, and UN38.3 compliance.
