Tenergy Li-Ion 18650 7.4V 2200mAh Rechargeable Battery Module w/ PCB Protection

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Sale Price: $13.99
Item Number: 31003

Quantity Discounts

5 to 10$13.43
11 to 20$13.29
21 to 59$13.15
60 to 99$13.01
100 or more$12.87

Features and Benefits

  • High quality 7.4 V Li-Ion rechargeable battery pack
  • Made of 2 2200mAh cylindrical 18650 cells with PCB for full protection
  • Light weight and higher energy density than NIMH rechargeable battery
  • No memory effect
  • Longer storage life than NiMH battery
  • You can build 7.4V/4.4Ah Li-Ion battery pack by connecting two PCB-ready batteries module in parallel  
  • Built-in IC chip will prevent battery pack from over charge and over discharge and prolongs battery life
  • Perfect for building 7.4V battery pack for bike lighting, RC toy (cars and airplanes), robots, cameras, DVD external battery
  • Recommend using our Smart Universal Li-ion Battery Charger and set the charging voltage at 7.4V

Technical Specs

Capacity  2200mAh
 Voltage  7.4V (peak at 8.4V)
 Dimensions  2.69 x 1.45  x 0.7  inch
 Weight  3.5 oz
 Max. charge current  1C (2.2A)
 Max. discharge current  2.0C (4.4A)
 Cut off voltage  6V


  • CAUTION: when working with Li-ion cells, they are very sensitive to charging characteristics and may explode if mis-handled.
  • User should have enough knowledge on Li-Ion rechargeable batteries in charging, discharging and assembly before use.
  • We are not responsible for any damage caused by misuse or mishandling of these Li-Ion batteries
  • Strongly suggest that you use our smart Li-Ion battery charger to recharge the battery pack  
  • Never use conventional DC adapter to charge the battery module) We are NOT responsible for any damage that is caused by the misuse of the Li-Ion Battery
  • Please don't make parallel connection with more than  two modules to avoid uneven charge.
Download product data sheet here.

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Product Reviews

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(2 Ratings, 1 Review) Average Rating:
Works as advertized
Graham (Boston area) 11/27/2012 9:30 AM
This is a decent battery at a good price. I got 2,158 mA.h from a fully charged battery, discharging at 500 mA and stopping when the voltage dropped to 6 volts. If you go much lower, the protection circuit cuts you off. Although the voltage reads zero, as soon as you connect a charger, you're up and running again. The impedance is not that great, about a third of an ohm.