GEB 18500 3.6V 1400mAh Cylindrical Lithium-ion (Li-ion) Battery Cell (18×50mm)
Grade-A GEB 18500 3.6V 1400mAh Cylindrical Lithium-ion (Li-ion) Battery Cell (18×50mm) (3.6V, 1400mAh) cylindrical battery with 18×50mm dimensions, low IR, and UN38.3 documentation for Electric bicycles, power tools, electric scooters, medical equipment, custom battery pack modules.
B2B Engineering Review & Pricing
Direct manufacturer supply, custom BMS telemetry, and CAD fit validation for OEM/ODM projects.
Product Details
The GEB 18500 3.6V 1400mAh Cylindrical Lithium-ion (Li-ion) Battery Cell (18×50mm) is a compact cylindrical rechargeable cell delivering 3.6V nominal voltage and 1,400mAh rated capacity (5.04Wh). Measuring Ø 18.2 × 50.0 mm—precisely 15mm shorter than standard 18650 cells—with a light unit weight of Approx. 33.0g ± 1.5g, this cell is engineered for spatial-constrained industrial and consumer enclosures. Featuring a robust steel canister, pressure-relief safety valve, and steady 1.5C–2.0C (2.1A–2.8A) continuous discharge capability, it is widely utilized in smart digital door locks, professional cordless hair clippers, precision laser leveling instruments, and compact medical telemetry monitors.
Product Overview
The GEB 18500 3.6V 1400mAh Cylindrical Lithium-ion (Li-ion) Battery Cell (18×50mm) is a specialized reduced-height cylindrical rechargeable cell manufactured to strict electrochemical tolerances. Delivering 3.6V nominal potential and 1400mAh rated capacity (5.04Wh total energy), this cell provides the same 18mm diameter as an 18650 while reducing overall length by 15mm, achieving a light unit weight of Approx. 33.0g ± 1.5g. Featuring an integrated safety release vent, high volumetric efficiency, and automated cell sorting (ΔV ≤ 3mV, ΔR ≤ 1.5mΩ), it is engineered for smart electronic door locks, video doorbells, professional cordless hair clippers, handheld laser levels, and compact medical infusion equipment. Both flat-top and button-top terminals are supported for custom module assembly or drop-in cell replacement.
Product Specifications
| Feature / Attribute | Technical Specification |
|---|---|
| Battery Chemistry | Lithium Cobalt Oxide / Nickel Manganese Cobalt (ICR/NCM 18500 Compact Cylindrical) |
| Nominal Voltage & Capacity | 3.6V / 1400mAh (5.04Wh total energy) |
| Physical Dimensions & Weight | Ø 18.2 ± 0.2 mm × H 50.0 ± 0.3 mm (18500 Form Factor) / Approx. 33.0g ± 1.5g |
| Continuous Discharge Rating | 1.5C–2.0C (2.1A–2.8A continuous discharge) |
| Peak Pulse Discharge | 3.0C (4.2A pulse ≤ 5s) |
| Target Applications | Smart electronic door locks, video doorbells, cordless hair clippers, laser leveling tools, compact medical monitoring pumps |
| Terminal Form Factor | Flat Top / Button Top / Pre-welded Pure Nickel Solder Tabs |
| Service Life / Endurance | ≥ 500–800 cycles (@ 80% DoD, 25°C, 0.5C/0.5C) |
Technical Specifications
| Parameter | Value | Test Conditions & Engineering Tolerances |
|---|---|---|
| Nominal Operating Voltage | 3.6V | Standard measurement @ 25°C, 0.2C rate |
| Upper Voltage / Cutoff | 4.20V ± 0.02V (CC/CV mode) | Regulation tolerance ±0.02V, cutoff @ 0.02C |
| Discharge Lower Cutoff | 2.75V ± 0.03V | Protective lower threshold limit |
| Internal AC Resistance (1kHz) | ≤ 35 mΩ | 1kHz AC test @ 25°C fully charged state |
| Cell Consistency Screening | ΔV ≤ 3mV | ΔR ≤ 1.5mΩ | Pre-assembly automated barcode classification SOP |
| Operating Temperature Range | Charge: 0~45°C | Discharge: -20~60°C | Ambient environmental test qualification |
Equipment Compatibility & Engineering Fit Check
Before deploying GEB 18500 3.6V 1400mAh Cylindrical Lithium-ion (Li-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 3.6V / 1.4Ah 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 4.09V.
- 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.
Cylindrical Battery Sourcing: Capacity and QC Verification Guide
How hardware engineers evaluate true C-rate capability, temperature rise curves, and Grade-A barcode traceability.
