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LG MJ1 INR 18650 3500mAh 3.7V Unprotected High-Drain 10A Lithium Ion (Li-ion) Flat Top or Button Top Battery - Bulk

LG MJ1 18650 battery upright
LG MJ1 18650 battery left side angle
LG MJ1 18650 left side angle
LG MJ1 18650 battery upright
LG MJ1 18650 battery left side angle
LG MJ1 18650 left side angle
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  • Featuring either a flat or button top so that it can fit a wide array of devices
  • With strong current and stable performance, this battery is ideal for high drain devices
  • INR batteries are reliable with continuous discharge and increasing capacities that are stabilized by the Lithium manganese nickel chemistry
  • The 18650 size is universally used, so multiple devices can utilize this battery
Usually ships the next business day
1 - 3$5.35 ea.
4 - 19$5.15 ea.
20 - 99$4.60 ea.
100+$4.15 ea.

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10A INR Battery

With a 10A discharge, the LG MJ1 is a Li-ion battery with strong current and stable performance. This newer model 18650 battery comes with 3500mAh capacity that will keep your specialty electronics running stronger and longer. The LG MJ1 is unprotected and features a flat top contact, making it flexible for a wide range of applications.

INR LiNiMnCoO2 Chemistry

What's the big deal with INR batteries? The deal is reliable and continuous discharge paired with ever increasing maximum capacities! The combination of both Nickel and Manganese provides not only stable chemistry but extended run times in all devices. Stable power means safe high discharge action as well as speedy charging.

Now Available in Protected Button Top

Same power that you know and expect from the LG MJ1, but now with the option of flat top versus button top.
Now Available for sale as a 4-Pack!


  • Battery Size: 18650
  • Battery Chemistry: INR LiNiMnCoO2 (Lithium manganese nickel)
  • Terminal Type: Flat Top or Button Top
  • Nominal Voltage: 3.7V
  • Nominal Capacity: 3500mAh
  • Max Charging Current: 1C
  • Max Discharge Current: 10A
  • Dimensions:
    • Diameter - 0.72" (18.30 mm)
    • Length - 2.56" (65.10 mm)
  • Weight: 1.65oz. (46.9g)
Please Note: Packaging may vary.

For more information regarding authorized use, applications and safety guidelines, please feel free to visit the LG Battery Guide.

lithium-ion safety warning
Battery Size:18650
Battery Capacity (mAh):3500
Battery Chemistry:Li-Ion
Battery Voltage:3.7
Battery Terminal Type:Flat Top
Battery Shelf Life:3 Years
Warranty:Battery Junction 30-Day Warranty
Return Policy:Battery Junction Return Policy
Product Weight:1.65oz
Product Dimensions:2.56" (L) x 0.72" (Diameter)
Country of Origin:CN
Associated Battery Sizes:168A, 18650, 19670, Protected 18650, Unprotected 1865
By don h.
hard to find, well worth the search.
April 22, 2020
Battery Junction .com had this battery that I could not find anywhere else and they had it a a good price. Shipment was fast and no drama with my order. Battery Junction is my new go to for batteries.
By michael
Woodside, NY
December 30, 2019

By Wingsy
It Really Is What I Ordered
December 23, 2019
Looking around I see several brands of 18650 batteries I have ordered in the past year or so. Only TWO of them actually are what the website says they are. (2.5AHr, 3AHr, 3.5AHr) The others are around 1AHr. The thing they have in common is, all the "mislabelled" batteries come from Chinese vendors and were less expensive than the good ones. Of the 2 good ones, one is this battery, the LG MJ1 INR 18650 3500mAh 3.7V. I bought 2 that I use in my vaping device and they work very well. They maintain a higher voltage under heavy load (about 3 amps). I've included a discharge graph I made using one of the 2 LG batteries I bought. The graph shows 3.2 amp-hour but in my test I charged the battery to 4.15v (not 4.2v like normal) AND I choose a cutoff voltage of 3.2v rather than a more normal cutoff of 2.8 to 3.0v. That's why I got 3.2AHr and not 3.5AHr.
By eric
last long
June 5, 2019
good batteries for vapes.
By John
You will tire, before it does!
April 21, 2019
This battery made me tired, waiting for it to run down.
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LG MJ1 INR 18650 3500mAh 3.7V Unprotected High-Drain 10A Lithium Ion (Li-ion) Flat Top or Button Top Battery - Bulk

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