Specifications:

• Battery type: 18650 li-ion
  
• Nominal capacity: 2200 mah
  
• Rated voltage: 3.7V
  
• Rechargeable battery: Yes
  
• Rechargeable times: ≥ 1200 times
  
• Internal resistance: ≤ 20mΩ
  
• Limited load voltage: 4.2 v
  
• Operating voltage: 2.75-4.2V
  
• Size: 65.5mm x 18.5mm (diameter)
  
• Generation protection board: Overcharge, overdischarge and overcurrent short circuit protection
  
• Suitable for: laser pointer, radios, loudspeakers, flashlights, radios, smallfans, electronic toysand other electronic products.