3.7V 21700 4000mah Lithium Rechargeable Sufficient Capacity Flat Head Battery

Feature:

• Brand: FB
• Product model: 21700 4000mAh
• Product name: Lithium-ion Rechargeable battery
• Battery voltage: 3.7~4.2V
• Battery size: 21*71mm (flat head)
• Product weight: 70g
• Number of charging cycles: 500 times
• Product features: Economical and durable, large current, small internal resistance, fast
• Charging can provide large current to the load

Packing included:

• 1 Pieace 21700 Battery