GEB INR26650 3.7V 5000mAh Cylindrical Lithium-ion Battery Cell (26×65mm)
Grade-A GEB INR26650 3.7V 5000mAh Cylindrical Lithium-ion Battery Cell (26×65mm) (3.7V, 5000mAh) cylindrical battery with 26×65mm 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 INR26650 3.7V 5000mAh Cylindrical Lithium-ion Battery Cell is a high-capacity Grade-A cylindrical cell delivering 3.7V nominal operating voltage and 5,000mAh rated capacity (18.5Wh energy). Measuring Ø 26.2 mm × H 65.5 mm with a net weight of approximately 95g (±3g), this high-drain INR cell is built with an impact-resistant nickel-plated steel can, integrated pressure-relief safety vent, continuous discharge rating of 1.0C–2.0C (5A–10A), and 3C pulse capability (15A), specifically engineered for high-intensity flashlights, mobile power equipment, electric scooters, and custom multi-cell battery packs.
Product Overview
The GEB INR26650 3.7V 5000mAh Cylindrical Lithium-ion Battery Cell (26×65mm) is an industrial-grade cylindrical cell manufactured to strict electrochemical tolerances for high-reliability power applications. Featuring a 3.7V nominal voltage and 5000mAh rated capacity (18.5Wh total energy), this cell incorporates an integrated CID/PTC safety mechanism, precision steel can packaging, and low internal AC resistance (≤20 mΩ). With physical dimensions of Ø 26.2 ± 0.2 mm × H 65.5 ± 0.3 mm and unit weight of Approx. 95g ± 3g, it is engineered for high-output tactical flashlights, electric scooters, commercial power tools, medical carts, and custom battery pack assemblies. Before module assembly, verify nickel tab thickness, cell spacing holders, and charger cutoff calibration.
Product Specifications
| Feature / Attribute | Technical Specification |
|---|---|
| Battery Chemistry | Ternary Lithium Nickel Manganese Cobalt (INR26650 NCM) |
| Nominal Voltage & Capacity | 3.7V / 5000mAh (18.5Wh total energy) |
| Physical Dimensions & Weight | Ø 26.2 ± 0.2 mm × H 65.5 ± 0.3 mm / Approx. 95g ± 3g |
| Continuous Discharge Rating | 1.0C–2.0C (5A–10A continuous discharge) |
| Peak Pulse Discharge | 3.0C (15A pulse ≤ 5s) |
| Target Applications | Tactical flashlights, electric scooters, power tools, medical portable devices, 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) | Regulation tolerance ±0.02V |
| Discharge Lower Cutoff | 2.75V – 3.00V ± 0.03V | Safety lower voltage threshold |
| Standard Charge Current | 0.5C (2.5A) | Max Fast Charge: 1.0C (5.0A) | CC/CV charge mode, 0.02C termination |
| Internal AC Resistance (1kHz) | ≤ 18–25 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 INR26650 3.7V 5000mAh Cylindrical Lithium-ion Battery Cell (26×65mm), verify these verified electrical and mechanical boundary requirements:
Operational Boundary Conditions
✔ Recommended Fit & Use Cases:
- Electronic devices and OEM packs matched with 3.7V / 5000mAh 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.
Racing Drone Batteries: Power, Voltage Sag & C-Rate Performance Guide 2026
Comprehensive engineering guide to FPV racing drone batteries. Analyze 4S vs 6S architectures, internal resistance sag, tab welding, and thermal dissipation.
