Flat Top 18650 Li-Ion Battery without Protection (3.7V) - BIS Certified

These lithium-ion batteries come in a variety of configurations and capacities. The battery with a protection circuit provides over-voltage, under-voltage, and over-current protection. Yet, it is slim and easy to fit into many project cases with a battery size of 18mm*65mm

These batteries do not come with protection circuitry. It is very important that you only use a LiIon/LiPoly constant-voltage/constant-current charger to recharge them and at a rate of 0.5C (1 Amp) or less and add a separate protection circuitry. 

 If you want batteries with protection, you can buy one here!

Additional safety notes: Do not use a NiMH/NiCad/lead-acid charger! Also, do not abuse these batteries, do not short, bend, crush, or puncture. Never charge or use unattended. Always inspect batteries and surrounding circuitry constantly for any damage, loose wiring, or the possibility of short circuits. Polarity matches all Adafruit LiPoly/LiIon chargers and boards, other brands may have reverse polarity and can destroy your battery. As with all Lithium-ion polymer batteries and with any power source - they should be used by experts who are comfortable working with power supplies

Specifications

• 2600 mAh 
• Nominal Capacity: 2600 mAh
• Minimum Capacity: 2500 mAh
• Nominal Voltage: 3.7V
• Charge Voltage: 4.2V
• Continuous Discharge Current (max.): 5A
  
• Operating Temperature: 0℃ - 45℃
• Internal Resistance ≤ 40mΩ @ 1kHz AC
• 2000 mAh
• Nominal Capacity: 2000 mAh
• Minimum Capacity: 1900 mAh
• Nominal Voltage: 3.7V
• Charge Voltage: 4.2V
• Continuous Discharge Current (max.): 3.8A
  
• Operating Temperature: 0℃ - 45℃
• Internal Resistance ≤ 40mΩ @ 1kHz AC
• 1500 mAh Flat Top
• Nominal Capacity: 1500 mAh
• Minimum Capacity: 1450 mAh
• Nominal Voltage: 3.7V
• Charge Voltage: 4.2V
• Maximum Discharge Current: 1.5A
  
• Operating Temperature: 0℃ - 45℃
• Internal Resistance ≤ 20mΩ @ 1kHz AC