About Payment 
 Shipping & Cost
 Battery SDS
 Battery Terminology
 Battery Knowledge
Privacy Policy
 Export restrictions


Shopper Award
Security Verified Seal

LG Lithium 21700 Rechargeable Cell: 3.63V 5000mAh (18.2Wh, INR21700 M50T) - UN38.3 Passed -

Your Price: From $13.60 to $14.10

Product Options



  • Lithium 21700
  • Nominal Voltage: 3.63V
  • Charge Voltage: 4.2V
  • Discharge Cut off Voltage: 2.5V
Capacity (Standard Charg/Discharge)
  • Nominal Capacity: 5000 mAh / 18.2Wh
  • Minimum Capacity: 4800mAh / 17.6Wh
Standard Charge (25°C±2°C)
  • CC/CV
    • Current: 0.3C (1455mA)
    • Voltage: 4.2V
    • End of current: 50mA
Max. Charge Current
  • 0°C - 25°C,   0.3C (1455mA)
  • 25°C - 45°C, 0.7C (3395mA)
Standard Discharge
  • CC
  • Current: 0.2C (970mA)
  • End of Voltage: 2.5V
Max. Continuous Discharge Current
  • -20°C - 10°C, 0.5C (2,425mA)
  • 10°C - 25°C, 3.0C (14,550mA)
  • 25°C -55°C, 1.5C (7,275mA)
Cycle Life (25°C±2°C, 0.5C Charge/1C Discharge)
  • ≥ 80% Capacity after 300 cycles
Temperature Charge: 0 to +45ºC
Discharge: -20 to +55ºC
  • 1 day: -40ºC
  • 1 month: -20 to + 55ºC
  • 3 month: -20 to + 45ºC
  • 12 month: -20 to + 25ºC
Dimension (DxH) ≤21.44mm,  ≤70.80mm
Weight 70g (2.5oz)

Please download the Specification here

  • Please download the product specifications


  • Li-Ion Batteries may explode if charged or discharged improperly.
  • Please possess knowledge of electronic and understand hot to handle Li-ion battery.
  • We reserve the right not to sell and void the warranty it you don't meet the above statement.
  • Please use a protection IC (PCB) to keep battery from overcharge and over discharge
  • Never solder directly onto the Li-ion battery as overheat might cause battery to explode. If you are making a pack or need to solder batteries together, you need to get battery with tabs on it. You will solder to tabs instead directly onto the battery.
  • Please read more safety warning about Li-ion battery

Related Products

  • For DIY, please add tabs as an option at a little extra cost
  • Our battery packs build by 21700 cells.
  • Need to DIY?  Please install our PCB or your own PCB withthe following features:
    • 4.2V/cell over-charge protection
    • 2.5V/cell over-discharge protection
    • Max currentover-drain protection
    • Shortcircuit protection.
  • Batteryspace.com is NOT liable for any misuse due to any other brand of PCB applied
  • If you don't know how to make Li-Ion pack, please don't DIY, click here to choose a pre-wired Li-Ion pack module from 3.7V-37V

Product Reviews

(0 Ratings, 0 Reviews)
What to consider when designing Lithium Batteries?
Bluetooth Technology for Lithium-ion/LiFePO4 Batteries
UN 38.3 Safety Test

We own a national standard UN38.3 testing lab. We can provide UN38.3 test service to our customer.

If you want to set up your own lab, we also provide UN38.3 & IEC62133 equipments and onsite training. Email us for the quote and lead time.
Lithium Battery Shipping Regulation
Recommendations on How to get ≤30% Rated Capacity for Shipping
Thermal Abuse Test for IEC62133
Mailing Lists