The Technik TR2148 is a high-quality, protected, and rechargeable 21700 lithium-ion battery. It is an industrial-grade, high-capacity energy cell designed for exceptional performance, stable voltage monitoring, and reliable safety during intensive multi-shift operations. Thanks to high-energy-density lithium technology, this professional-grade cell delivers a robust nominal capacity of 4800 mAh (17.76 Wh), ensuring extended runtime for demanding professional equipment.
The TR2148’s internal PCM protection module continuously safeguards the internal chemistry against overcharging, deep discharge, external short circuits, and overcurrent, thereby mitigating risks such as thermal runaway or cell degradation. The cell adheres to universal 21700 specifications (21 mm diameter, 70 mm length) and features a streamlined 'Flat Top' design (without a protruding positive terminal button), allowing it to fit seamlessly into compatible battery holders for high-drain devices. With a nominal voltage of 3.7 V and a maximum charging voltage of 4.2 V, this high-performance industrial cell is ready for immediate use in advanced tactical flashlights, power-intensive measuring equipment, and high-performance portable electronics.
Specifications
- Teknik (Premium High-Current Power Line)
- TR2148 (Specialty 21700 Lithium Matrix)
- Protected, rechargeable cylindrical lithium-ion cell
- 21700 standard configuration
- Typical capacity: 4800 mAh
- Energy capacity: 17.76 Wh (high energy density)
- Nominal voltage: 3.7 V (constant power delivery)
- Maximum charging voltage: 4.2 V (full-charge threshold)
- Flat-top configuration (no protrusion on the positive terminal)
- PCM active protection circuit against overcharge, deep discharge, short circuit, and overcurrent
- Dimensions: 21 mm diameter x 70 mm length (cylindrical form factor)