GEB 18650 3.7V 2500mAh Cylindrical Lithium-ion (Li-ion) Battery Cell (18×65mm)
Grade-A GEB 18650 3.7V 2500mAh Cylindrical Lithium-ion (Li-ion) Battery Cell (18×65mm) (3.7V, 2500mAh) 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 2500mAh Cylindrical Lithium-ion (Li-ion) Battery Cell (18×65mm) delivers a proven combination of cycle longevity, discharge stability, and thermal resilience with 3.7V nominal output and 2,500mAh rated capacity (9.25Wh). Measuring Ø 18.3 × 65.0 mm with an exact unit weight of ~44.5g, this cell is manufactured under strict pre-sorting SOPs (ΔV ≤ 3mV, ΔR ≤ 1.5mΩ) to ensure uniform multi-cell performance. Delivering up to 5.0A continuous discharge (2.0C), it is engineered for smart vacuum cleaners, portable field test instruments, wireless communication relays, and commercial electronics.
Product Overview
The GEB 18650 3.7V 2500mAh Cylindrical Lithium-ion (Li-ion) Battery Cell (18×65mm) is an optimized high-stability cylindrical rechargeable cell engineered for consistent multi-cell battery pack construction. Providing a 3.7V nominal operating voltage and 2500mAh rated capacity (9.25Wh energy content), this cell features an internal safety valve, low impedance design (≤26 mΩ), and high thermal tolerance. Measuring Ø 18.3 ± 0.2 mm × H 65.0 ± 0.3 mm with an exact net weight of Approx. 44.5g ± 1.5g, it is engineered for cordless robotic vacuums, handheld scrubbers, outdoor acoustic public address equipment, wireless telemetry bridges, and modular industrial backup packs.
Product Specifications
| Feature / Attribute | Technical Specification |
|---|---|
| Battery Chemistry | Lithium Nickel Manganese Cobalt Oxide (NCM 18650 Cylindrical) |
| Nominal Voltage & Capacity | 3.7V / 2500mAh (9.25Wh total energy) |
| Physical Dimensions & Weight | Ø 18.3 ± 0.2 mm × H 65.0 ± 0.3 mm / Approx. 44.5g ± 1.5g |
| Continuous Discharge Rating | 1.5C–2.0C (3.75A–5.0A continuous discharge) |
| Peak Pulse Discharge | 3.0C (7.5A pulse ≤ 5s) |
| Target Applications | Robotic vacuums, cordless floor sweepers, portable field analyzers, wireless IoT gateways, modular energy packs |
| Terminal Form Factor | Flat Top / Button Top / Pre-welded Pure Nickel Solder Tabs |
| Service Life / Endurance | ≥ 800 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) | Regulation tolerance ±0.02V, cutoff @ 0.02C |
| Discharge Lower Cutoff | 2.75V ± 0.03V | Protective lower voltage limit |
| Internal AC Resistance (1kHz) | ≤ 26 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 18650 3.7V 2500mAh 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 / 2.5Ah 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.
