21700 Lithium‑ion Cell 3.7V 4500mAh High Capacity Rechargeable Cylindrical Battery Cell for DIY Battery Pack, E‑bike & Power Tools

Product Overview

Key Features

• Grade‑A 21700 lithium‑ion cylindrical cell, genuine 4800mAh capacity, high energy density
• Low internal resistance, stable discharge performance, supports 3C max continuous discharge
• Long cycle life: ≥1000 charge‑discharge cycles, good capacity retention
• Stable performance for DIY series‑parallel assembly for custom battery packs
• Wide working temperature range, fit for indoor & outdoor equipment
• Strict pre‑shipment testing, anti‑static packaging, support bulk wholesale

  Item	Specification
  Model	21700‑4800‑3.7V
  Cell Type	Grade‑A 21700 Lithium‑ion Cylindrical Cell
  Nominal Voltage	3.7V
  Nominal Capacity	4800mAh
  Full Charge Voltage	4.2V
  Discharge Cut‑off Voltage	2.5V
  Standard Charge Current	0.5C
  Max Charge Current	1C
  Max Continuous Discharge Current	3C
  Cycle Life	≥1000 Cycles
  Dimension	Φ21mm*70mm
  Weight	≈70g
  Charging Temperature	0℃ ~ +45℃
  Discharging Temperature	-20℃ ~ +60℃

  Applications

  Perfect for DIY battery pack building, e‑bike, electric scooter, power tools, flashlights, portable fans, RC models, energy‑storage equipment and other 3.7V‑based power projects. Support large‑quantity wholesale for battery pack manufacturers.

  Package & Wholesale

  All cells are capacity‑tested before delivery. Anti‑static individual packing. We support bulk order and OEM cooperation for battery‑pack factories.