SCIGOLD 21700 Li-ion Cells — Standard

SCIGOLD 21700 Li-ion rechargeable cells: 4,000 / 4,500 / 5,000 mAh, 3.6V, up to 18,000 mWh per cell. For high-output flashlights and bike lights.

• 3 capacity options: 4,000 / 4,500 / 5,000 mAh (14,400 ~ 18,000 mWh)
• Nominal voltage 3.6V: electrically compatible with 3.6V Li-ion devices, but physically larger than an 18650
• About 1.5× the volume of an 18650 (52% more) and about 2× the energy (5,000 vs 2,500 mAh)
• Standard discharge current: 12A — 15A depending on capacity
• Protected button-top safety circuit (overcharge / over-discharge / short)
• Up to 18,000 mWh per cell (5,000 mAh at 3.6V nominal)
• Operating temperature: -20°C ~ 55°C
• Internal resistance 22 mΩ max (25 mΩ on the 5,000 mAh)
• 500+ charge cycles
• Dimensions: 21.9 × 71.0 mm · 66~69±2g per cell