"The company itself was a horrible experience. Just know that they will take your order for batteries that are not in stock and tell you they are being shipped out and then give you another notification that they don’t know when your order will be ready because the batteries are back ordered for 7 months. Lesson learned. Looking into online reviews confirm. The batteries I finally got work so far."




LG MJ1 INR 18650 3500mAh 3.7V High-Drain 10A Lithium Ion (Li-ion) Unprotected Flat Top Battery - Bulk
- 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
- Size: 18650
- Voltage: 3.6/3.7
- Rechargeable: Yes
- Chemistry: Li-Ion
- Capacity (mAh): 3500
- Terminal Type: Flat Top
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Description
LG MJ1
Unprotected Flat Top 18650 Battery
The LG MJ1 is a flat top 18650 battery with one of the highest capacities available. INR (lithium nickel manganese) chemistry offers a superior 3,500mAh capacity compared to most IMR (lithium manganese) cells, while having a maximum discharge current of 10A. The flat top terminal design is ideal for use in creating battery packs.
Rechargeable & Reusable
Invest in a rechargeable battery that will last for years to come– this battery can be recharged 400+ times.3 Year Shelf Life
Stock up and store spare batteries with confidence– lithium ion batteries have a 3+ year shelf life, ensuring you always have a fresh replacement when you need it.High Discharge Rate
10A max continuous discharge rate for high-drain electronics, such as flashlights that require minimum discharge rates to enable their brightest modes.Notable Features
CAUTION: Unprotected Li-Ion Battery
No express or implied guarantee of compatibility with any device can be made. Please do your research and make sure this battery is compatible with the item you intend to use it with.
Charge only in a smart charger designed for the specific type of lithium-ion batteries. Do not mix and match old and new, used and unused batteries.
Do not dispose in a fire. Regulations and laws pertaining to the recycling and disposal of lithium-ion batteries vary from country to country, as well as by state and local governments. Please consult your local jurisdiction regarding appropriate disposal. Many retail stores offer free recycling of rechargeable batteries.
Item Details
| Brand | LG |
| SKU | LG-MJ1 |
| Size | 18650 |
| Voltage | 3.6/3.7 |
| Battery Rechargeable | Yes |
| Capacity (mAh) | 3500 |
| Chemistry | Li-Ion |
| Sub-Chemistry | LiNiMnCoO2 INR / NMC |
| Shelf Life | 3 Years |
| Packaging | Bulk |
| QTY Per Package | 1 |
| California Residents | see Prop 65 WARNINGS |
Specifications
| Size | 18650 |
| Voltage | 3.6/3.7 |
| Battery Rechargeable | Yes |
| Capacity (mAh) | 3500 |
| Watt Hours (wH) | 12.95 |
| Terminal Type | Flat Top |
| Integrated Charge Port | No |
| Equivalent Types | 168A, 18650, 19670, Protected 18650, Unprotected 1865 |
Unit Dimensions
| Length | 2.56 in (65 mm) |
| Diameter | 0.72 in (18 mm) |
| Weight | 1.65 oz (47 g) |
Packaging/Shipping Dimensions
| Length | 2.6 in |
| Width | 0.7 in |
| Height | 0.7 in |
| Shipping Weight | 0.11 lb |
Documents
Additional Details
| Packaging | Bulk |
| Warranty | Battery Junction Warranty |
| Return Policy | Return Policy |
Bright Buys
- Trusted and reliable; consistently rated as a top customer pick for LED flashlights
- Superior 1,600mAh capacity means longer runtimes and less frequent battery changes
- Optimized for both high and low drain devices
- State-of-the-art automated production lines ensure the highest quality and safety protections
- Ideal for low-drain applications that require a primary battery to provide constant power
- 10-year shelf life - stock up for emergencies!
- The best choice for consistent power, great in low-drain devices like remotes
- Safe and reliable - capable of performing in high or low temperatures
- 225mAh capacity drives long runtimes for watches and electronics
- CR2032 coin cells packed with 3V of power
- Convenient 6-piece retail card provides backup batteries
- Easily replaceable primary lithium cells
- Top recommended battery for Apple AirTags
- 11-in-1 card sized tool fits in your wallet or on a keychain!
- Packed with handy tools including a screwdriver & 7 wrench settings
- Serrated saw and straight-edge knife for quick cutting jobs
- Can + bottle openers for campsite meals or end-of-shift relaxation
- Independent 4-slot charging for different batteries
- Touch screen control provides user-friendly operation
- 4 working modes for charging, testing batteries, and more
- Compatible with Li-ion, Ni-Cd, & NiMH batteries
- Quick Charge 3.0 technology enables fast and efficient device charging
- USB compatibility supports a wide range of electronic devices
- Compact adapter design makes it ideal for travel and everyday use
- Intelligent charging management helps optimize power delivery
- Universal cable to consolidate chargers for work, home, or EDC use
- USB-C, Micro-USB, and Lightning plugs for various electronics
- USB-C input with USB-A adapter for use with any USB power source
- 3.93ft long cord, allowing you to use your phone during recharging!
- Premium materials for durability and fast charge speeds
- Fits flashlights w/ diameter of 24-32mm & length of 130mm-170mm
- Great for EDCs, tactical lights, slim lights, & more!
- Durable and flexible nylon material keeps lights secure
- 33g weight won't drag you down!
- Portable powerhouse - emits a 1148ft beam from a 3.4in light!
- Strobe and SOS modes accessible for emergencies
- Dual-fuel power - swap in a CR123A when needed
- Strong magnetic tailcap for hands-free repair jobs
- USB-C port offers seamless recharging from anywhere!
- 3,000 lumens and a 250-meter throw - fierce illumination to light up your backyard
- Multiple output modes are accessible via easy side switch operation
- Strobe, SOS, and beacon modes offer distinct signaling capability
- High-capacity battery supports the light with a maximum 227-hour runtime
Reviews
Overall rating: 4.7173915 / 5 from 46 reviews.
AI Generated Review Summary
The LG MJ1 18650 battery is highly regarded for its excellent price and outstanding performance. Customers appreciate its high capacity and flat top terminal design, making it suitable for various applications.
Summary topics
- Price (24%): Many customers expressed satisfaction with the great price of the battery, mentioning it multiple times in their reviews.
- Battery Performance (60%): A substantial number of customers loved the batteries, describing them as great, excellent, and awesome.
Review topics: ["quality","package","shipping","works","capacity","price","buy","batteries","cells","diameter"].
Review highlights
- "Good Battery, great price." —
- "Great Battery, Great Price!" —
- "Great price, perfect fit and quick delivery." —
Reviews
Great Batteries
"I use these in my trail cams, they last a long time, no troubles yet?"
👌
"Product functioning as described. Pleasure doing business with this site."
More Juice Than Advertised
"I just received a handful of LG MJ1 INR Button top 18650 batteries I ordered from Battery Junction. They're rated for 3500 mAh. I only had the chance to drain two of the seven I bought down to "zero" before recharging them in my multi-cell charger. My charger tells you the standard stuff about each battery in a slot: voltage, % charged, mAh amount charged to, temperature, etc. One of the LG batteries I got charged to 3800 mAh and the other one charged to 3900 mAh. Quite a bargain when you consider that my flashlight's manufacturer's batteries rated for 3500 mAh charge to 3500 mAh at 3X the cost of these batteries from Battery Junction. Good procurement job, folks. Grazie,"
"Works great will definitely buy again"
"Exactly what i needed."
CAUTION - This cell is generically wrapped
"Please be aware, this cell has a button top added after the LG production, resulting in two outer wraps (a green one that looks as expected with finished cells and a generic clear one over it). There is a note on the page that warns as such, however, it doesn't show up on the mobile site unless you expand the description and note. The packaging does not include a warning/indication beyond the standard disclaimer and the plastic wrap appears to be part of the shipping material, with a generic sticker affixed. It looks exactly like the generic wrap that must be removed from AA/AAA battery pairs when shipped with remotes or other electronic devices. Don't make my mistake and waste ~$16."
LG MJ1 INR 18650 3500mAh 3. 7V
"Good Quality and quick shipping. Would recommend and purchase again."
Perfect Battery for Solar Lights
"The LG MJ1 is one of the best high‑capacity 18650 cells I’ve used for low‑drain devices. I installed it in my solar string lights, and the difference was immediate. The old battery would fade out around 10 PM, but this MJ1 keeps the lights bright and steady all night — I’ve seen them still running at 4 AM. Huge upgrade over the generic cells that come with most solar panels. Highly recommended."
This battery was perfect!
"Exactly what I needed thanks!"
Q&A
- The MSDS (SDS) is almost 10 years old, I know there is a newer one for this cell, do you have it?
- We will get an updated one and update the listing. This has now been updated with a more current document.
- I am going to rebuild a Lectric XP 3.0 Ebike battery. The batteries in the current pack are 2300 MAH 10 amp draw. Do you think these would be a good replacement which would provide more range?
- We do not build battery packs so really can't advise you. The batteries you referred in the question are a higher capacity than the ones you mention in your question so would give a longer run time. Other than that, you would need to talk to someone who knows about pack building for additional questions or information since we do not know enough about pack building to offer guidance.
- Would these be suitable to rebuild a m12 battery pack? Thank you.
- We do not build battery packs so would not be able to answer your question.



