GEB 401120 3.7V 60mAh Lithium Polymer (LiPo) Battery Cell (4×11×20mm)

Grade-A GEB 401120 3.7V 60mAh Lithium Polymer (LiPo) Battery Cell (4×11×20mm) (3.7V, 60mAh) 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.

✔ Response target: Target response within 12 business hours during business hours; timing varies by inquiry complexity and working hours.
✔ Typical Lead Time: 7–10 business days for prototypes; 15–20 business days for mass production after final specification approval. Final timing is confirmed after tooling, testing, and order review.
✔ Shipping documentation: Applicable UN38.3 test documentation, MSDS/SDS, CE and Class 9 dangerous-goods requirements are confirmed per selected configuration and shipment.

Product Details

Direct Answer / Engineering Summary

The GEB 401120 3.7V 60mAh Lithium Polymer (LiPo) Battery Cell (4×11×20mm) is a professional-grade ultra-compact, high-energy-density micro Lithium Polymer (LiPo) cell delivering a verified 3.7V nominal working voltage and 60mAh rated capacity. Featuring an ultra-slim aluminum-laminated pouch architecture, this cell maximizes volumetric energy density in space-constrained enclosures for wearable medical telemetry, IoT tracking nodes, and compact portable electronics while ensuring reliable thermal expansion control.

Engineering Overview

Product Overview

The GEB 401120 3.7V 60mAh Lithium Polymer (LiPo) Battery Cell (4×11×20mm) is a Grade-A flexible pouch lithium polymer cell engineered for space-constrained electronic hardware. Delivering 3.7V nominal voltage and 60mAh rated capacity, this cell utilizes advanced high-energy-density stacking technology, ultra-pure electrolyte formulation, and low internal impedance. Featuring physical dimensions of 4×11×20mm with net weight of approximately 3g, it is targeted for Ultra-compact wearable devices, smart rings, Bluetooth earbuds, medical biosensors, and IoT asset trackers. Before housing integration, verify enclosure clearance, required wire length, connector model, and any manufacturer-specified expansion allowance for the selected cell.

Quick Reference

Product Specifications

Feature / Attribute Technical Specification
Battery Chemistry Lithium Cobalt Oxide / NCM Polymer (LiPo)
Nominal Voltage & Capacity 3.7V / 60mAh
Physical Dimensions & Weight 4×11×20mm (±0.3mm) / Approx. 3g
Continuous Discharge Rating 0.5C–1.0C (60mA continuous discharge)
Peak Pulse Discharge 2.0C (120mA pulse ≤ 5s)
Target Applications Ultra-compact wearable devices, smart rings, Bluetooth earbuds, medical biosensors, and IoT asset trackers
Standard Terminals Bare nickel tabs / optional PCM with JST, Molex, or solder leads
Baseline Cycle Life ≥ 500–800 cycles (@ 80% DoD, 25°C, 0.5C/0.5C)
Engineering Data

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 (12mA to 30mA) Max recommended fast charge: 1.0C (60mA)
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)
Engineering Validation

Equipment Compatibility & Engineering Fit Check

Before deploying GEB 401120 3.7V 60mAh Lithium Polymer (LiPo) Battery Cell (4×11×20mm), verify these verified electrical and mechanical boundary requirements:

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Voltage & Charge Cutoff: Nominal 3.7V (charging CC/CV cutoff at 4.2V); confirm charger algorithm strictly matches this chemistry.
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Capacity & Energy Budget: Rated at 60Ah; verify system run-time calculations under planned discharge currents.
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Physical Envelope: Specified at 4×11×20mm (±0.3mm); allow 5–10mm buffer in battery tray for expansion and lead harness.
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Cycle Reliability: Verified for ≥ 500–800 cycles (@ 80% DoD, 25°C, 0.5C/0.5C) under controlled DOD and thermal management.
💡 Custom Engineering Fit: Contact our Shenzhen engineering team to verify CAD models, custom wire leads, or BMS CANbus telemetry for this product.
Operational Suitability

Operational Boundary Conditions

✔ Recommended Fit & Use Cases:

  • Electronic devices and OEM packs matched with 3.7V / 60Ah 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 Standards

First-Party Manufacturing SOP & Export Compliance

🏭 Automated Grading & Matching Cells classified via automated OCV/ACIR sorting (ΔV ≤ 2–3mV, ΔR ≤ 1.2mΩ) for tight pack balance.
🔬 Joint Integrity & Testing Laser or ultrasonic busbar welding with destructive pull test validation ≥ 5.0–8.0 kgf per terminal.
📦 Full Cycle Aging Verification 100% full charge-discharge cycle screening and thermal imaging prior to warehouse dispatch.
🌐 Export & Regulatory Clearance Supplied with certified UN38.3 test summaries, MSDS, 1.2m drop reports, and Class 9 DG shipping documentation.
Turnaround: 7–10 days prototypes; 15–20 days mass production per custom tooling requirements. View Verified Manufacturing Equipment & Testing Facility →

⚙ Engineering FAQ & B2B Procurement Specifications

What is the turnaround time for custom battery pack prototypes and mass production for GEB 401120 3.7V 60mAh Lithium Polymer (LiPo) Battery Cell (4×11×20mm)?
Custom prototype development typically requires 7 to 10 business days after CAD drawing approval and technical specification freeze. Commercial mass production turnaround is typically 15 to 20 business days. Standard OEM minimum order quantities (MOQ) start at 50 to 100 units depending on cell chemistry, custom mold tooling, and casing complexity.
Does GEB provide UN38.3 test summaries, MSDS, and Class 9 dangerous goods export compliance?
Yes. General Electronics Technology (GEB) provides complete first-party compliance verification for all industrial battery packs, including UN38.3 test reports, 1.2m drop test appraisal certificates, MSDS/SDS sheets, and certified dangerous goods packaging compliant with IATA air transport and IMDG maritime shipping regulations.
What smart telemetry protocols and BMS protection features are supported?
Our custom smart BMS architectures support industry-standard communication protocols including UAVCAN, CANbus 2.0B, SMBus, UART, and RS485. Integrated hardware protections include multi-tier over-voltage, over-discharge, continuous over-current, short-circuit, and dual-channel NTC thermal cutoff safeties with active cell balancing options.
What are the recommended continuous and peak burst discharge margins?
To maximize lifecycle endurance and electrochemical stability, we recommend designing with a 15% to 20% continuous discharge headroom margin under typical operating loads. Peak burst discharge ratings should strictly adhere to specified duration windows (typically ≤10 seconds) while ensuring pack operating temperatures remain below 65°C.

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