GEB 16650 3.7V 1600mAh Cylindrical Lithium-ion Battery Cell (Dual CR123A Replacement)
Grade-A GEB 16650 3.7V 1600mAh cylindrical Li-ion battery cell (Φ16.5×65.0mm, 40.0g, IR ≤ 55mΩ). Ideal rechargeable drop-in replacement for dual CR123A primary batteries in tactical flashlights and optoelectronics.
B2B Engineering Review & Pricing
Direct manufacturer supply, custom BMS telemetry, and CAD fit validation for OEM/ODM projects.
Product Details
The GEB 16650 3.7V 1600mAh Cylindrical Lithium-ion Battery Cell is an industrial-grade Grade-A rechargeable lithium cell engineered specifically as a rechargeable drop-in replacement for two series-connected primary CR123A / 16340 lithium batteries. Measuring Φ16.5 ± 0.2 mm in diameter and 65.0 ± 0.3 mm in length with a calibrated net weight of 40.0g ± 1.5g and internal AC resistance ≤ 55 mΩ, this cell perfectly fits standard 16.5mm-bore tactical flashlight bodies (SureFire, Streamlight, Elzetta) and professional optoelectronic equipment, eliminating high operating costs and environmental waste of disposable primary cells while delivering sustained 3.2A (2.0C) continuous discharge capability.
Product Overview
The GEB 16650 3.7V 1600mAh Cylindrical Lithium-ion Battery Cell (Dual CR123A Replacement) resolves the critical power dilemma in high-performance illumination and specialized instrumentation. While standard 18650 cells (Φ18mm) are too wide for tactical torches designed around 16.5mm-diameter CR123A cells, and using two RCR123A cells (8.4V hot off charger) can blow sensitive LED drivers, a single GEB 16650 provides 3.7V nominal (4.20V peak) with 1600mAh (5.92Wh) capacity. Built with high-integrity nickel-plated steel casing, integrated Current Interrupt Device (CID), and automated automated electrochemical sorting (ΔV ≤ 3mV, ΔR ≤ 2.0mΩ), it provides clean, stable power for tactical flashlights, weapon-mounted lights, thermal imaging scopes, night-vision devices, and portable field sensors.
Product Specifications
| Feature / Attribute | Technical Specification |
|---|---|
| Battery Chemistry | Lithium Cobalt Oxide / NCM (Li-ion 16650 Cylindrical) |
| Nominal Voltage & Capacity | 3.7V / 1600mAh (5.92Wh total energy) |
| Physical Dimensions | Φ16.5 ± 0.2 mm × H 65.0 ± 0.3 mm |
| Cell Net Weight | Approx. 40.0g ± 1.5g |
| Internal AC Resistance (1kHz) | ≤ 55 mΩ (@ 25°C fully charged state) |
| Continuous Discharge Rating | 2.0C (3.2A continuous discharge) |
| Peak Pulse Discharge | 3.0C (4.8A pulse ≤ 5s) |
| Target Applications | Tactical flashlights, weapon-mounted illuminators, thermal scopes, 2× CR123A host retrofits |
| Terminal Form Factor | Standard Flat Top (Optional Button Top / Pre-welded Solder Tabs) |
| Service Life / Endurance | ≥ 500 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 Charge Voltage / Cutoff | 4.20V ± 0.02V (CC/CV mode) | Standard CC/CV charge regulation threshold |
| Discharge Lower Cutoff | 2.75V – 3.00V ± 0.03V | Safety low-voltage threshold |
| Internal AC Resistance (1kHz) | ≤ 55 mΩ | 1kHz AC impedance test @ 25°C |
| Cell Consistency Screening | ΔV ≤ 3mV | ΔR ≤ 2.0mΩ | Pre-assembly automated barcode classification SOP |
| Standard Charge Current | 0.5C (800mA) | CC/CV charge to 4.20V with 0.02C cutoff |
| Max Fast Charge Current | 1.0C (1600mA) | Thermal monitoring recommended |
| Operating Temperature Range | Charge: 0~45°C | Discharge: -20~60°C | Storage: -20~45°C (40%–50% SoC) |
Integration & Operational Boundary Conditions
Host Compatibility & Voltage Verification: Designed to replace dual 3.0V CR123A cells (6.0V nominal total) in flashlights and optoelectronic devices with buck-boost or wide-voltage driver circuits capable of running down to 3.0V. Ensure the device contact spring accommodates the 65.0mm length.
Thermal Envelope & Charging Parameters: Standard charge operating window is 0°C to 45°C; continuous discharge operating range is -20°C to 60°C. Avoid over-discharging below 2.75V to maintain cathode structural stability over repeated charge cycles.
B2B Procurement & Lead Times: Wholesale OEM/ODM orders available with customized button tops, clear heat-shrink sleeves, or pre-welded nickel solder tabs. Standard Class 9 dangerous goods export packaging and UN38.3 test summaries provided with every commercial shipment.
Equipment Compatibility & Engineering Fit Check
Before deploying GEB 16650 3.7V 1600mAh Cylindrical Lithium-ion Battery Cell (Dual CR123A Replacement), verify these verified electrical and mechanical boundary requirements:
Operational Boundary Conditions
✔ Recommended Fit & Use Cases:
- Electronic devices and OEM packs matched with 3.7V / 1.6Ah 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.
