GEB 18650 3.7V 2900mAh Cylindrical Lithium-ion (Li-ion) Battery Cell (18×65mm)
Grade-A GEB 18650 3.7V 2900mAh Cylindrical Lithium-ion (Li-ion) Battery Cell (18×65mm) (3.7V, 2900mAh) cylindrical battery with 18×65mm 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 18650 3.7V 2900mAh Cylindrical Lithium-ion (Li-ion) Battery Cell (18×65mm) is a high-stability industrial cylindrical cell engineered for commercial telemetry, precision measuring instruments, and multi-cell power packs. Delivering a verified 3.7V nominal operating voltage and 2900mAh rated capacity (10.73Wh total energy), this cell features consistent discharge voltage curves, low internal impedance (≤ 28–35 mΩ), and 1.5C continuous discharge capability (4.35A continuous). Encased in a precision steel canister equipped with a CID pressure-relief safety vent and PTC thermal surge suppression, it offers reliable cycle longevity and high safety margins. Verify series/parallel configuration specs and spot-welding parameters before pack manufacturing.
Product Overview
The GEB 18650 3.7V 2900mAh Cylindrical Lithium-ion Battery Cell represents a balanced, cost-effective energy solution for commercial electronics and industrial telemetry devices. Featuring a 3.7V nominal operating voltage and 2900mAh rated capacity (10.73Wh energy content), this cell is manufactured with Grade-A NCM materials and automated cathode slurry coating. With standardized physical dimensions of Ø 18.3 ± 0.2 mm × H 65.0 ± 0.3 mm and a calibrated unit weight of Approx. 46.0g ± 1.5g, it is engineered for handheld inspection devices, wireless communications gear, remote data loggers, and modular battery packs. Standard flat top and button top terminal configurations facilitate seamless mechanical assembly.
Product Specifications
| Feature / Attribute | Technical Specification |
|---|---|
| Battery Chemistry | Lithium Nickel Manganese Cobalt Oxide (NCM 18650 Cylindrical) |
| Nominal Voltage & Capacity | 3.7V / 2900mAh (10.73Wh) |
| Physical Dimensions & Weight | Ø 18.3 ± 0.2 mm × H 65.0 ± 0.3 mm / Approx. 46.0g ± 1.5g |
| Continuous Discharge Rating | 1.0C–1.5C (2.9A–4.35A continuous discharge) |
| Peak Pulse Discharge | 2.5C (7.25A peak pulse ≤ 5s) |
| Target Applications | Wireless telemetry instruments, handheld measurement gear, industrial remotes, custom battery packs |
| Terminal Form Factor | Flat Top / 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 regulation tolerance ±0.02V |
| Discharge Lower Cutoff | 2.75V ± 0.03V | Safety lower discharge voltage limit |
| Internal AC Resistance (1kHz) | ≤ 28–35 mΩ | 1kHz AC test @ 25°C fully charged state |
| Cell Consistency Screening | ΔV ≤ 3mV | ΔR ≤ 1.0mΩ | Pre-assembly automated barcode classification SOP |
| Standard Charge Current | 0.5C (1.45A) / Max Fast Charge 1.0C (2.9A) | CC/CV charging to 4.20V cutoff |
| Operating Temperature Range | Charge: 0~45°C | Discharge: -20~60°C | Ambient environmental test qualification |
Equipment Compatibility & Engineering Fit Check
Before deploying GEB 18650 3.7V 2900mAh Cylindrical Lithium-ion (Li-ion) Battery Cell (18×65mm), verify these verified electrical and mechanical boundary requirements:
Operational Boundary Conditions
✔ Recommended Fit & Use Cases:
- Electronic devices and OEM packs matched with 3.7V / 2.9Ah 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.
High-Performance 40C 3S 11.1V 1500mAh LiPo Battery Pack Guide
Technical engineering breakdown of 40C 3S 11.1V 1500mAh LiPo batteries: 60A continuous / 120A burst delivery, ultra-low internal resistance, C-rate thermal limits & XT60 connector specs.
