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UltraFire TR 18650 2400mAh 3.7V Unprotected Lithium Ion (Li-ion) Button Top Battery - Bulk

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"Ultrafire Blue XSL 18650 2400mAh 3.7v Rechargeable Battery"
  • High capacity and reliable power source
  • Ultrafire 2400mAh battery
  • Non-protected cell design
  • Voltage: 3.7V (also called 3.6V and 4.2V)
  • Capacity: 2400mAh
  • Length: 65.5 +/- 0.2mm
  • Diameter: 18.4 +/- 0.2mm
  • Weight: 44.5 gram

lithium-ion safety warning
Battery Size:18650
Battery Capacity (mAh):2400
Battery Chemistry:Li-Ion
Battery Voltage:3.7
Battery Terminal Type:Button Top
Battery Shelf Life:3 Years
Warranty:Battery Junction 30-Day Warranty
Return Policy:Battery Junction Return Policy
Product Weight:1.57oz
Product Dimensions:2.579" (L) x 0.724" (Diameter)
Country of Origin:CN
Associated Battery Sizes:168A, 18650, 19670, Protected 18650, Unprotected 18650
6 Reviews
67% (4)
33% (2)
0% (0)
0% (0)
0% (0)
Trenton, NJ
UltraFire TR 18650 Li-ion BAttery
August 13, 2018
I have purchased these exact same batteries from Battery Junction and have been very pleased. The proof is in the reorder pudding! And the reduced price didn't hurt either.
By Ed B.
Great price, fast wervice
February 8, 2017
Always esy to order whatever I need at A GREAT PRICE
By George
Rochester Ny
December 23, 2016
Product was as said shipping was good. Easy site to navigate. Purchased from here before
By Kim
Los Angeles
November 23, 2016
I bought this battery for my solar lights, I'm glad Battery Junction carry them. Very hard to find button top 18650 battery.
By Ben
Bulk batteries purchase
October 15, 2015
I bought these batteries to serve as "disposables" in my 18650-only lights, should there be an extended power outage where I couldn't recharge. All 10 of these charged correctly, held their charge correctly, and cycled fine. These now sit in holders, charged and ready to go for when the lights go out!
ProsInexpensive, serve their purpose as "disposable" cells.
1 Question & 1 Answer
Gary Jones
from Grove, Oklahoma asked:
April 6, 2014
How long do you charge these batteries? 1, 2, or 4 hours?
1 Answer
Depending on your charger its varies from about an hour to a few hours. If you have a smart charger, it should indicate when the battery is finished charging. We recommend the Nitecore i4 Smart Charger. This will charge these UltraFire 18650 batteries in approximately 3 hours.
Customer Service
on April 7, 2014


UltraFire TR 18650 2400mAh 3.7V Unprotected Lithium Ion (Li-ion) Button Top Battery - Bulk

  • $6.70
  • & Free Shipping On Orders Over $50
  • In Stock