Original Samsung INR21700-58E 5330mAh 10.7A 21700 Li-ion Battery

Samsung INR21700-58E 21700 Li-ion Cell

The Samsung INR21700-58E is a 21700-size Li-ion cell manufactured by Samsung SDI. It has a nominal capacity of 5330 mAh, a maximum capacity of 5500 mAh, and a maximum continuous discharge current of 10.7 A. The cell is intended for medium-to-high power applications and supports multi-series and multi-parallel configurations such as 10S, 13S, and 16S. It is commonly used in custom spot-welded battery packs, e-bikes, e-scooters, solar energy storage units, medical devices, custom power supplies, and robotic systems.

Technical specifications

• Brand / model: Samsung SDI / INR21700-58E
• Chemistry: Li-ion (NMC)
• Form factor: 21700
• Maximum capacity: 5500 mAh
• Nominal capacity: 5330 mAh
• Minimum capacity: 5180 mAh
• Nominal voltage: 3.63 V
• End-of-charge voltage: 4.20 V ± 0.05 V
• Discharge cut-off voltage: 2.50 V
• Maximum continuous discharge current: 10.7 A
• Standard charge current: ~2.5 A (0.5C)
• Internal resistance (AC 1 kHz): ≤ 25 mΩ
• Dimensions: Diameter 21.25 mm; height 70.80 mm
• Weight: Approx. 71.5 g
• Terminal construction: Flat top

Safety and usage notice

• Li-ion cells are unprotected industrial batteries.
• Must be used with a suitable BMS (Battery Management System) or protected charging circuits.
• Do not short-circuit, overcharge above 4.2 V, or over-discharge below 2.5 V.
• Keep away from heat sources and direct sunlight.