These tests below only note my personal ESTIMATED ratings for the batteries I tested at the time I tested them. Any battery that is not a genuine Samsung, Sony, Murata, LG, Panasonic, Molicel, or Sanyo can change at any time! This can be one of the hazards of using “rewrapped” or batteries from other manufacturers so carefully research any battery you are considering using before purchasing.
Misusing or mishandling lithium-ion batteries can pose a SERIOUS RISK of property damage, personal injury, or even death. Never use them outside of a fully protected battery pack and you use them at your own risk. Never exceed the battery’s true continuous discharge rating (CDR), never let it get colder than 0°C or hotter than 60°C, and keep the plastic wrap and top insulating ring in perfect condition. Never use a battery that is physically damaged in any way.
Testing batteries at their limits is dangerous and should never be attempted by anyone who has not thoroughly studied the dangers involved, understands the risks, has the proper equipment, and takes all appropriate safety precautions.
If the battery has only one current rating number, or if it only says "max", then I have to assume the battery is rated at that current level for any type of discharge, including continuous.
Test Results
This cell was tested about a year ago but I want to retest the better performing cells about once a year to make sure they’re still worth buying.
This cell can easily be confused with the M50T, which has the same wrap color and similar model number, so be careful when buying them. This cell performs a lot better than the M50T.
This is a fantastic performing “energy” cell for lower current applications, one of the best we can buy. The M50LT actually outperforms both the Samsung 50S and BAK N21700CG-50 at 5A. At 10A the Samsung 50S is the better performer by a bit but the M50LT still slightly outperforms the BAK N21700CG-50. I have not tested its cycle life.
Its 14.4A current rating is only for 10°C-25°C ambient temperatures though. If the cell is inside a battery pack or a warm device you will need to lower the current rating, down to 7.2A for 25°C-55°C ambient temperatures. That’s about 21W for a vaping device.
Even at room temperature I recommend staying at 10A (about 30W) or lower to help improve performance (reduce voltage sag), extend cell life, and reduce the risk of the cell getting too warm.
The cells I tested delivered 4852mAh and 4878mAh, exceeding this cell’s 4770mAh minimum capacity rating but not its 4932mAh “nominal” rating. I’m rating them at 4800mAh since the cell’s I have can’t be the lowest capacity ones in the batch.
18650 Ratings and E-Scores Table:
www.e-cigarette-forum.com
20700/21700 Ratings and E-Scores Table:
www.e-cigarette-forum.com
Continuous Current Discharge Graphs
Ratings and Performance Specs Graphic
I want to work for the community full time! If you feel what I do is worth a couple dollars a month and you would like early access to battery availability, battery testing and news, and a say in what I test, then please consider becoming a patron and supporting my testing efforts: Battery Mooch | creating battery and device tests | Patreon.
To see how other cells have tested check out this link: Links To All 21700, 26650, 18350, 18500 Battery Tests
Misusing or mishandling lithium-ion batteries can pose a SERIOUS RISK of property damage, personal injury, or even death. Never use them outside of a fully protected battery pack and you use them at your own risk. Never exceed the battery’s true continuous discharge rating (CDR), never let it get colder than 0°C or hotter than 60°C, and keep the plastic wrap and top insulating ring in perfect condition. Never use a battery that is physically damaged in any way.
Testing batteries at their limits is dangerous and should never be attempted by anyone who has not thoroughly studied the dangers involved, understands the risks, has the proper equipment, and takes all appropriate safety precautions.
If the battery has only one current rating number, or if it only says "max", then I have to assume the battery is rated at that current level for any type of discharge, including continuous.
Test Results
This cell was tested about a year ago but I want to retest the better performing cells about once a year to make sure they’re still worth buying.
This cell can easily be confused with the M50T, which has the same wrap color and similar model number, so be careful when buying them. This cell performs a lot better than the M50T.
This is a fantastic performing “energy” cell for lower current applications, one of the best we can buy. The M50LT actually outperforms both the Samsung 50S and BAK N21700CG-50 at 5A. At 10A the Samsung 50S is the better performer by a bit but the M50LT still slightly outperforms the BAK N21700CG-50. I have not tested its cycle life.
Its 14.4A current rating is only for 10°C-25°C ambient temperatures though. If the cell is inside a battery pack or a warm device you will need to lower the current rating, down to 7.2A for 25°C-55°C ambient temperatures. That’s about 21W for a vaping device.
Even at room temperature I recommend staying at 10A (about 30W) or lower to help improve performance (reduce voltage sag), extend cell life, and reduce the risk of the cell getting too warm.
The cells I tested delivered 4852mAh and 4878mAh, exceeding this cell’s 4770mAh minimum capacity rating but not its 4932mAh “nominal” rating. I’m rating them at 4800mAh since the cell’s I have can’t be the lowest capacity ones in the batch.
18650 Ratings and E-Scores Table:
18650 Battery Ratings and Performance Table
You are responsible for your own safety! These batteries are designed, manufactured, and sold only for use in a battery pack with the proper protection circuitry and battery management system. They were not designed for vaping (electronic...
www.e-cigarette-forum.com
20700/21700 Ratings and E-Scores Table:
21700 Battery Ratings and Performance Table
You are responsible for your own safety! These batteries are designed, manufactured, and sold only for use in a battery pack with the proper protection circuitry and battery management system. They were not designed for vaping (electronic...
www.e-cigarette-forum.com
Continuous Current Discharge Graphs
Ratings and Performance Specs Graphic
I want to work for the community full time! If you feel what I do is worth a couple dollars a month and you would like early access to battery availability, battery testing and news, and a say in what I test, then please consider becoming a patron and supporting my testing efforts: Battery Mooch | creating battery and device tests | Patreon.
To see how other cells have tested check out this link: Links To All 21700, 26650, 18350, 18500 Battery Tests
