Description
Product Specifications
Key Features
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High-Amp Pulse Discharge: Engineered specifically for power-intensive applications, capable of handling rapid pulse currents up to 35A and sustaining a solid continuous discharge rate of 20A.
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Inherently Safe IMR Chemistry: Built on a Lithium Manganese Oxide ($\text{Li-Mn}$) chemical base that provides excellent thermal stability, lower internal resistance, and safe operation under heavy loads without needing an absolute built-in PCB layer.
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Extended Dynamic Runtime: Features a high-capacity baseline of 3000mAh, optimizing runtime for power tools, robotics, and complex electronic configurations before requiring a recovery cycle.
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Unprotected Flat-Top Profile: Clean flat-top termination designed directly for tight, clean fits inside mechanical layouts or custom multi-cell series/parallel assembly packs (such as 2S to 5S configurations).
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Industrial Distinct Styling: Wrapped in a professional metallic purple anti-static sleeve with clearly printed manufacturing specs, batch warnings, and voltage baselines for fast identification.
Technical Specifications
| Parameter | Specification |
| Brand | Efest |
| Series | IMR High-Drain |
| Size Factor | 18650 Cylindrical |
| Chemistry | IMR (Lithium Manganese Oxide / $\text{Li-Mn}$) |
| Nominal Voltage | 3.6V – 3.7V |
| Maximum Charge Voltage | 4.2V $\pm$ 0.05V |
| Discharge Cut-off Voltage | 2.5V |
| Rated Capacity | 3000mAh (True Minimum: 2900mAh) |
| Max Continuous Discharge Current | 20A |
| Max Pulse Discharge Current | 35A |
| Internal Resistance | $\le 20\text{ m}\Omega$ |
| Standard Charging Profile | CC/CV Profile, 2.0A Rate |
| Terminal Connection | Flat Top |
| Dimensions | Diameter: 18.50 mm $\times$ Length: 65.20 mm |
Primary Applications
Optimized specifically to drive modular engineering setups, heavy hand-held equipment, and automated projects:
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Custom Battery Pack Assemblies: An exceptional option for designing multi-cell series setups (2S, 3S, 4S, 5S) with external BMS frameworks for robotics and portable electronic utility banks.
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High-Torque Cordless Power Tools: Powers heavy-duty field maintenance tools, diagnostic line meters, cordless drivers, and electronic testing benches.
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Extreme-Lumen Tactical Searchlights: Delivers uninterrupted high-current power for premium searchlights, portable job site lanterns, and heavy security illumination arrays.
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High-Performance RC Engineering: Supplies strong, reliable current bursts to performance-grade remote vehicles, commercial drones, and mechanical prototypes.
Critical Handling Guidelines
⚠️ Safety Warning: This is an unprotected industrial cell. Never drop loose cells into a toolbox, drawer, or pocket where they can shift against metal objects (screwdrivers, keys, or screws) and cause a short-circuit. Always store the cell in an insulated plastic case when not in active use. Charge exclusively inside a dedicated external smart lithium-ion charger with integrated automatic voltage cutoff.
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