GEB 18500 3.7V 1600mAh High-Capacity Cylindrical Lithium-ion Battery Cell (18×50mm)
Grade-A GEB 18500 3.7V 1600mAh cylindrical Li-ion battery cell (18×50mm, 33.5g, IR ≤ 40mΩ). Compact 50mm height, high energy density, and UN38.3 certification for handheld gimbals, medical monitors, and specialized portable equipment.
B2B Engineering Review & Pricing
Direct manufacturer supply, custom BMS telemetry, and CAD fit validation for OEM/ODM projects.
Product Details
The GEB 18500 3.7V 1600mAh High-Capacity Cylindrical Lithium-ion Battery Cell (18×50mm) is a compact Grade-A cylindrical cell engineered for height-restricted electronic devices requiring the standard 18mm diameter format but constrained to a 50mm maximum length. Delivering a verified 3.7V nominal working voltage and 1,600mAh rated capacity (5.92Wh), this shortened cell features a calibrated unit weight of 33.5g ± 1.0g and low AC internal resistance ≤ 40 mΩ, making it the premier power solution for handheld camera gimbal stabilizers, portable medical monitors, cordless precision groomers, and tactical sensing hardware.
Product Overview
The GEB 18500 3.7V 1600mAh High-Capacity Cylindrical Lithium-ion Battery Cell (18×50mm) provides engineering teams with the ideal compromise between substantial energy storage and compact structural form factor. Measuring exactly Φ18.2 ± 0.2 mm × H 50.0 ± 0.3 mm, it cuts 15mm in length compared to standard 18650 cells while retaining a robust 1600mAh capacity. Manufactured with precision nickel-plated steel casing, integrated safety pressure-relief vents (CID/PTC), and tight cell grading (ΔV ≤ 3mV, ΔR ≤ 1.5mΩ), it guarantees reliable multi-cell consistency in handheld camera gimbals, specialized wireless communications, dental and surgical diagnostic lights, and compact industrial IoT terminals.
Product Specifications
| Feature / Attribute | Technical Specification |
|---|---|
| Battery Chemistry | Lithium Nickel Manganese Cobalt / ICR (Li-ion 18500 Cylindrical) |
| Nominal Voltage & Capacity | 3.7V / 1600mAh (5.92Wh total energy) |
| Physical Dimensions | Φ18.2 ± 0.2 mm × H 50.0 ± 0.3 mm |
| Cell Net Weight | Approx. 33.5g ± 1.0g |
| Internal AC Resistance (1kHz) | ≤ 40 mΩ (@ 25°C fully charged state) |
| Continuous Discharge Rating | 2.0C (3.2A continuous discharge) |
| Peak Pulse Discharge | 3.0C (4.8A pulse ≤ 5s) |
| Target Applications | Handheld gimbals, portable medical diagnostic equipment, cordless styling tools, compact instruments |
| Terminal Form Factor | Standard Flat Top (Optional Button Top / Pre-welded Solder Tabs) |
| Service Life / Endurance | ≥ 500–1,000 cycles (@ 80% DoD, 25°C, 0.5C/0.5C) |
Technical Specifications
| Parameter | Value | Test Conditions & Engineering Tolerances |
|---|---|---|
| Nominal Operating Voltage | 3.7V | Standard measurement @ 25°C, 0.2C rate |
| Upper Voltage / Cutoff | 4.20V ± 0.02V (CC/CV mode) | Standard CC/CV charge regulation threshold |
| Discharge Lower Cutoff | 2.75V – 3.00V ± 0.03V | Safety lower voltage threshold |
| Internal AC Resistance (1kHz) | ≤ 40 mΩ | 1kHz AC impedance test @ 25°C fully charged state |
| Cell Consistency Screening | ΔV ≤ 3mV | ΔR ≤ 1.5mΩ | Pre-assembly automated barcode classification SOP |
| Standard Charge Current | 0.5C (800mA) | CC/CV charge to 4.20V with 0.02C cutoff |
| Operating Temperature Range | Charge: 0~45°C | Discharge: -20~60°C | Ambient environmental test qualification |
Integration & System Design Guidelines
Mechanical Clearances: Verify that battery tube clearance matches the 18.2mm nominal diameter with proper tolerance for wrapping shrink film. Do not use high-force insertion that may deform the outer steel jacket.
Thermal Envelope & Charging Parameters: Standard charge operating window is 0°C to 45°C; continuous discharge operating range is -20°C to 60°C. Long-term storage target should be maintained at 3.75V–3.85V per cell (approx. 40%–50% SoC).
B2B Procurement & Lead Times: Wholesale OEM/ODM procurement available with custom leads, BMS integration, or automated multi-cell pack welding. Standard Class 9 dangerous goods export packaging and UN38.3 test summaries provided with every shipment.
Equipment Compatibility & Engineering Fit Check
Before deploying GEB 18500 3.7V 1600mAh High-Capacity Cylindrical Lithium-ion Battery Cell (18×50mm), verify these verified electrical and mechanical boundary requirements:
Operational Boundary Conditions
✔ Recommended Fit & Use Cases:
- Electronic devices and OEM packs matched with 3.7V / 1600mAh 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
High-Performance Cylindrical Batteries: 16 Years of B2B Manufacturing
Technical breakdown of automated cell sorting, delta IR matching, laser welding busbars, and cycle aging protocols.
Industrial Cylindrical Batteries: QC, Aging and Test Standards
Key factory inspection criteria for cylindrical packs, thermal management, vibration testing, and BMS protection thresholds.
OEM Custom Battery Pack Design: Requirements and Sourcing Guide
Engineering guide to designing and sourcing custom OEM battery packs: electrical requirements, mechanical constraints, smart BMS telemetry, and supplier audits.
