GEB 18650 3.7V 2500mAh 3C High-Rate Cylindrical Lithium-ion Battery Cell (18×65mm)

Name: GEB 18650 3.7V 2500mAh 3C High-Rate Cylindrical Lithium-ion Battery Cell (18×65mm)
Brand: GEB
Price: 14.31 USD
Availability: PreOrder

Grade-A GEB 18650 3.7V 2500mAh 3C High-Rate Cylindrical Lithium-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.

Cylindrical Lithium Battery

B2B Engineering Review & Pricing

Direct manufacturer supply, custom BMS telemetry, and CAD fit validation for OEM/ODM projects.

⚡ Send Inquiry 📄 Request Datasheet & Pinout

✔ Response target: Target response within 12 business hours during business hours; timing varies by inquiry complexity and working hours.

✔ Typical Lead Time: 7–10 business days for prototypes; 15–20 business days for mass production after final specification approval. Final timing is confirmed after tooling, testing, and order review.

✔ Shipping documentation: Applicable UN38.3 test documentation, MSDS/SDS, CE and Class 9 dangerous-goods requirements are confirmed per selected configuration and shipment.

Product Details

Direct Answer / Engineering Summary

The GEB 18650 3.7V 2500mAh 3C High-Rate Cylindrical Lithium-ion Battery Cell (18×65mm) is an industrial Grade-A cylindrical power cell delivering 3.7V nominal working voltage, 2,500mAh rated capacity (9.25Wh energy content), and a rated continuous discharge rating of 3C (7.5A continuous discharge). Engineered with a reinforced steel can, internal safety vents (CID/PTC), and low AC internal resistance (≤ 25–35 mΩ), this cell ensures low heat generation during continuous medium-to-high discharge cycles. Targeted for electric mobility scooters, e-bikes, robotic cleaners, and industrial emergency power packs, system builders should verify cell spacing brackets, nickel strip dimensions, and BMS balance specifications prior to pack integration.

Engineering Overview

Product Overview

The GEB 18650 3.7V 2500mAh 3C High-Rate Cylindrical Lithium-ion Battery Cell (18×65mm) strikes an optimal balance between volumetric energy density and current delivery capability. Featuring a 3.7V nominal operating voltage, 2500mAh rated capacity, and a sustained 7.5A continuous (3C) discharge capability, this cell is manufactured under cleanroom automation standards. Standard physical dimensions are Ø 18.3 ± 0.2 mm × H 65.0 ± 0.3 mm with an average unit weight of Approx. 45.0g ± 1.5g. It is widely applied in self-balancing scooters, electric bicycles, robotic floor scrubbers, high-lumen portable lighting, and medical cart power units.

Quick Reference

Product Specifications

Feature / Attribute	Technical Specification
Battery Chemistry	Lithium Nickel Manganese Cobalt Oxide (NCM Li-ion 18650)
Nominal Voltage & Capacity	3.7V / 2500mAh (9.25Wh)
Physical Dimensions & Weight	Ø 18.3 ± 0.2 mm × H 65.0 ± 0.3 mm / Approx. 45.0g ± 1.5g
Continuous Discharge Rating	3C (7.5A) sustained continuous discharge
Peak Pulse Discharge	5C (12.5A pulse ≤ 5s)
Target Applications	E-bikes, electric scooters, robotic cleaners, LED floodlights, custom pack modules
Terminal Form Factor	Flat Top / Optional Button Top / Custom Spot-welded Nickel Tabs
Service Life / Endurance	≥ 500–1,000 cycles (@ 80% DoD, 25°C, 0.5C/1C)

Engineering Data

Technical Specifications

Parameter	Value	Test Conditions & Engineering Tolerances
Nominal Operating Voltage	3.7V	Standard discharge @ 25°C, 0.2C rate
Upper Voltage / Cutoff	4.20V ± 0.02V (CC/CV mode)	Standard Li-ion charge regulation threshold
Discharge Lower Cutoff	2.75V – 3.00V ± 0.03V	Safety low-voltage cutoff threshold
Internal AC Resistance (1kHz)	≤ 25–35 mΩ	1kHz AC test @ 25°C fully charged state
Cell Consistency Screening	ΔV ≤ 3mV \| ΔR ≤ 1.5mΩ	Pre-assembly automated barcode classification SOP
Standard Charge Current	0.2C–0.5C (500mA to 1250mA)	Max recommended fast charge: 1.0C (2500mA)
Operating Temperature Range	Charge: 0~45°C \| Discharge: -20~60°C	Ambient environmental test qualification

Engineering Validation

Equipment Compatibility & Engineering Fit Check

Before deploying GEB 18650 3.7V 2500mAh 3C High-Rate Cylindrical Lithium-ion Battery Cell (18×65mm), verify these verified electrical and mechanical boundary requirements:

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Voltage & Charge Cutoff: Nominal 3.7V (charging CC/CV cutoff at 4.2V); confirm charger algorithm strictly matches this chemistry.

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Capacity & Energy Budget: Rated at 2.5Ah; verify system run-time calculations under planned discharge currents.

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Physical Envelope: Specified at Ø 18.3 ± 0.2 mm × H 65.0 ± 0.3 mm; allow 5–10mm buffer in battery tray for expansion and lead harness.

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Cycle Reliability: Verified for ≥ 500–1,000 cycles (@ 80% DoD, 25°C, 0.5C/1C) under controlled DOD and thermal management.

💡 Custom Engineering Fit: Contact our Shenzhen engineering team to verify CAD models, custom wire leads, or BMS CANbus telemetry for this product.

Operational Suitability

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 Standards

First-Party Manufacturing SOP & Export Compliance

🏭 Automated Grading & Matching Cells classified via automated OCV/ACIR sorting (ΔV ≤ 2–3mV, ΔR ≤ 1.2mΩ) for tight pack balance.

🔬 Joint Integrity & Testing Laser or ultrasonic busbar welding with destructive pull test validation ≥ 5.0–8.0 kgf per terminal.

📦 Full Cycle Aging Verification 100% full charge-discharge cycle screening and thermal imaging prior to warehouse dispatch.

🌐 Export & Regulatory Clearance Supplied with certified UN38.3 test summaries, MSDS, 1.2m drop reports, and Class 9 DG shipping documentation.

Turnaround: 7–10 days prototypes; 15–20 days mass production per custom tooling requirements. View Verified Manufacturing Equipment & Testing Facility →

Decision Support

Technical Whitepapers & Engineering Guides

B2B Manufacturing Read Guide →

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.

QC & Testing Read Guide →

Industrial Cylindrical Batteries: QC, Aging and Test Standards

Key factory inspection criteria for cylindrical packs, thermal management, vibration testing, and BMS protection thresholds.

Sourcing Verification Read Guide →

Cylindrical Battery Sourcing: Capacity and QC Verification Guide

How hardware engineers evaluate true C-rate capability, temperature rise curves, and Grade-A barcode traceability.

⚙ Engineering FAQ & B2B Procurement Specifications

What is the turnaround time for custom battery pack prototypes and mass production for GEB 18650 3.7V 2500mAh 3C High-Rate Cylindrical Lithium-ion Battery Cell (18×65mm)?

Custom prototype development typically requires 7 to 10 business days after CAD drawing approval and technical specification freeze. Commercial mass production turnaround is typically 15 to 20 business days. Standard OEM minimum order quantities (MOQ) start at 50 to 100 units depending on cell chemistry, custom mold tooling, and casing complexity.

Does GEB provide UN38.3 test summaries, MSDS, and Class 9 dangerous goods export compliance?

Yes. General Electronics Technology (GEB) provides complete first-party compliance verification for all industrial battery packs, including UN38.3 test reports, 1.2m drop test appraisal certificates, MSDS/SDS sheets, and certified dangerous goods packaging compliant with IATA air transport and IMDG maritime shipping regulations.

What smart telemetry protocols and BMS protection features are supported?

Our custom smart BMS architectures support industry-standard communication protocols including UAVCAN, CANbus 2.0B, SMBus, UART, and RS485. Integrated hardware protections include multi-tier over-voltage, over-discharge, continuous over-current, short-circuit, and dual-channel NTC thermal cutoff safeties with active cell balancing options.

What are the recommended continuous and peak burst discharge margins?

To maximize lifecycle endurance and electrochemical stability, we recommend designing with a 15% to 20% continuous discharge headroom margin under typical operating loads. Peak burst discharge ratings should strictly adhere to specified duration windows (typically ≤10 seconds) while ensuring pack operating temperatures remain below 65°C.