Samsung 58E 21700 5330mAh 10.7A Battery

Key Features 5330mAh High Capacity: One of the highest-capacity 21700 cells available — ≥5330mAh standard discharge with a 5170mAh rated floor at 1C, so the numbers hold up in real-world use. 20Wh Energy Output: At 20Wh per cell, the 58E is built for builds where runtime per kilogram of pack weight is the metric that matters most. Stable Continuous Discharge: 10.7A continuous discharge makes the 58E an energy cell through and through — steady, controlled current for applications that run long rather than run hard. Low Impedance Design: ≤15mΩ AC impedance after standard charge keeps energy delivery efficient and voltage response consistent across the full discharge curve. 500-Cycle Durability: Holds ≥4136mAh after 500 cycles under standard conditions — strong long-term capacity retention for a cell in this energy class. Overview If your build is about range, runtime, and energy density rather than peak discharge, the Samsung 58E is worth a close look. With ≥5330mAh standard capacity, a 3.64V nominal voltage, and 20Wh of energy per cell, it sits at the top of the 21700 energy class. The 10.7A continuous discharge rating is modest by power-cell standards — but that is exactly the point. The 58E is optimized for applications that draw steady, controlled current over long periods rather than short, high-current bursts, and it excels at that role. An AC impedance of ≤15mΩ keeps things running cleanly, and 500-cycle durability with ≥4136mAh retention means your pack stays useful well beyond the first hundred charges. It is an unprotected cell, so a properly designed pack with spot-welded interconnects and a solid BMS is the right way to run it — no direct soldering. Applications / Uses E-bikes and electric vehicles where maximizing range per charge is the primary performance goal Portable power stations and high-capacity backup power packs Custom battery pack builds focused on energy density and long cycle life Lighting systems and electronics requiring steady, extended current delivery Robotics and automation equipment with moderate, consistent current draw profiles Specifications Brand: Samsung SDI Model: 58E (CC5493F101) Battery Type: 21700 Lithium-Ion (INR) Standard Discharge Capacity: ≥5330mAh (0.2C to 2.5V) Rated Discharge Capacity: ≥5170mAh (1C to 2.5V) Typical Energy: 20.0Wh Nominal Voltage: 3.64V Full Charge Voltage: 4.20V Discharge Cutoff Voltage: 2.5V Standard Charge Current: 0.5C / 2665mA Maximum Charge Current: 1C / 5330mA Standard Charge Time: ~4 hours Charge Method: CC-CV Max Continuous Discharge: 2C / 10.7A Initial AC Impedance: ≤15mΩ (AC 1kHz) Cycle Life: ≥4136mAh after 500 cycles Charge Temperature: 0°C to 45°C Discharge Temperature: -10°C to 60°C Storage Temperature: Up to 1 year at -20°C to 23°C Battery Top: Flat Top Protected: No Diameter: 21.78mm (Max) Height: 71.00mm (Max) Weight: 74g (Max) Rechargeable: Yes