GEB 18350 3.7V 700mAh Cylindrical Lithium-ion Battery Cell / 1S Battery Pack
Compact Grade-A GEB 18350 3.7V 700mAh (2.59Wh) cylindrical lithium-ion battery cell / 1S pack (Ø18.2×35.5mm, 22g) featuring 2C continuous discharge, optional PCM with leads, and UN38.3 compliance for tactical torches and portable instrumentation.
B2B Engineering Review & Pricing
Direct manufacturer supply, custom BMS telemetry, and CAD fit validation for OEM/ODM projects.
Product Details
The GEB 18350 3.7V 700mAh Cylindrical Lithium-ion Battery Cell / 1S Battery Pack is an engineered compact 1S cylindrical energy source delivering a verified 3.7V nominal working voltage and 700mAh rated capacity (2.59Wh total energy). Measuring Ø 18.2mm in diameter and 35.5mm in length with a cell weight of approximately 22g, this Grade-A cell bridges the gap between ultra-compact coin cells and full-size 18650s, supplying a sustained 2.0C continuous discharge rating (1.4A continuous) and pulse output up to 3.0C (2.1A ≤ 5s). Available both as a bare flat-top/button-top cylindrical cell and as a factory-assembled 1S pack with integrated protection circuitry (PCM), pure nickel solder tabs, or silicone lead wires.
Product Overview
The GEB 18350 3.7V 700mAh Cylindrical Lithium-ion Battery Cell / 1S Pack provides a robust power platform for compact tactical flashlights, handheld lasers, portable medical monitoring pens, wireless audio transmitters, and miniaturized industrial telemetry nodes. Incorporating an integrated Current Interrupt Device (CID) and positive temperature coefficient (PTC) safety vent within its nickel-plated steel canister, this cell guarantees mechanical pressure relief under abuse conditions. Delivering 3.7V nominal voltage, 700mAh rated capacity, physical dimensions of Ø 18.2 ± 0.2 mm × H 35.5 ± 0.5 mm, and a net weight of Approx. 22.0g ± 1.5g, it provides high gravimetric energy density in a sub-40mm cylinder.
Product Specifications
| Feature / Attribute | Technical Specification |
|---|---|
| Battery Chemistry | Lithium Nickel Manganese Cobalt Oxide (NCM Li-ion) |
| Nominal Voltage & Capacity | 3.7V / 700mAh (2.59Wh) |
| Form Factor & Dimensions | Cylindrical 18350 (Ø 18.2 ± 0.2 mm × H 35.5 ± 0.5 mm) |
| Unit Weight | Approx. 22.0g ± 1.5g (Cell) / Approx. 24.5g ± 1.5g (Pack with PCM & leads) |
| Continuous Discharge Rating | 2.0C continuous (1.4A continuous discharge) |
| Peak Pulse Discharge | 3.0C pulse (2.1A pulse ≤ 5 seconds) |
| Target Applications | Tactical flashlights, portable medical diagnostic tools, compact laser modules, miniature robotics |
| Terminal Options | Flat top / Button top / Spot-welded solder tabs / 1S PCM with silicone leads |
| Baseline Cycle Life | ≥ 500 cycles (@ 80% DoD, 25°C, 0.5C/0.5C) |
Technical Specifications
| Parameter | Value | Test Conditions & Engineering Tolerances |
|---|---|---|
| Nominal Voltage | 3.7V | Standard 0.2C discharge test @ 25°C |
| Charge Cutoff Voltage | 4.20V ± 0.03V | CC/CV standard charge, 0.02C cutoff threshold |
| Discharge Cutoff Voltage | 2.75V ± 0.05V | BMS / PCM over-discharge cutoff limit |
| Standard Charge Current | 0.2C–0.5C (140mA to 350mA) | Maximum recommended charge current: 1.0C (700mA) |
| Internal AC Resistance (1kHz) | ≤ 60 mΩ | 1kHz AC impedance @ 25°C fully charged |
| Cell Consistency Screening | ΔV ≤ 3mV | ΔR ≤ 2mΩ | Automated barcode sorting for multi-cell pairing |
| Operating Temperature Range | Charge: 0°C to 45°C | Discharge: -20°C to 60°C | Storage: 15°C to 25°C (45%–50% SoC recommended) |
Integration & Operational Boundary Conditions
1S Pack & PCM Configurations: When integrated into encapsulated electronic enclosures, GEB equips this cell with an ultra-compact circular PCM board (featuring overcharge cutoff @ 4.28V, overdischarge cutoff @ 2.80V, and short-circuit protection) sealed within protective PVC heat shrink with custom wire gauge (AWG 22–26) and JST/Molex terminations.
Thermal Dissipation: For continuous 2C discharge applications, ensure that ambient heat dissipation maintains cell surface temperature below 60°C to preserve cycle longevity and avoid premature capacity decay.
B2B Procurement & Documentation: OEM/ODM volume orders supported with cell sorting lot codes, UN38.3 test reports, MSDS, and IEC 62133 compliance certificates for worldwide sea and air transport.
Equipment Compatibility & Engineering Fit Check
Before deploying GEB 18350 3.7V 700mAh Cylindrical Lithium-ion Battery Cell / 1S Battery Pack, verify these verified electrical and mechanical boundary requirements:
Operational Boundary Conditions
✔ Recommended Fit & Use Cases:
- Electronic devices and OEM packs matched with 3.7V / 700mAh 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.
Cylindrical Battery Sourcing: Capacity and QC Verification Guide
How hardware engineers evaluate true C-rate capability, temperature rise curves, and Grade-A barcode traceability.
