These tests below only note my personal opinion for the 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, EVE, Lishen, BAK, 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 is a good performing cell that should be available at a lower cost.
It doesn’t perform quite as well (run as long) as the BAK N21700CG-50, LG M50LT, or Samsung 50E2 and 50S but it equals the Lishen LR2170SD and SF and the Molicel M50A. If cost is a priority and you don’t need every last second of run time then this is a good cell to consider.
The datasheet doesn’t say if the 60°C “operating temperature” spec is the ambient or cell surface temperature so I’m forced to assume it’s the cell temp and to give it a 10A continuous/13.5A non-continuous “temperature-limited” rating. You can run it at up to 13.5A but do not let the cell go over 60°C. This really speeds up aging of the cell and is almost too hot to hold anyway so that shouldn’t be a problem.
Two cells delivered 4460mAh and 4462mAh which is fantastic consistency but it’s under the 5000mAh typical rating. It does exceed the 4400mAh minimum rating though. Since I cannot have the lowest capacity cells in the batch I am rating them at 4400mAh.
The DC internal resistances for the two cells were 25.9mOhm and 26.2mAh, also incredibly consistent. Both cells performed essentially identically.
Continuous Current Discharge Graphs
Ratings and Performance Specs Graphic
18650 Ratings and E-Scores Table:
www.e-cigarette-forum.com
20700/21700 Ratings and E-Scores Table:
www.e-cigarette-forum.com
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: Get more from Battery Mooch on 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 is a good performing cell that should be available at a lower cost.
It doesn’t perform quite as well (run as long) as the BAK N21700CG-50, LG M50LT, or Samsung 50E2 and 50S but it equals the Lishen LR2170SD and SF and the Molicel M50A. If cost is a priority and you don’t need every last second of run time then this is a good cell to consider.
The datasheet doesn’t say if the 60°C “operating temperature” spec is the ambient or cell surface temperature so I’m forced to assume it’s the cell temp and to give it a 10A continuous/13.5A non-continuous “temperature-limited” rating. You can run it at up to 13.5A but do not let the cell go over 60°C. This really speeds up aging of the cell and is almost too hot to hold anyway so that shouldn’t be a problem.
Two cells delivered 4460mAh and 4462mAh which is fantastic consistency but it’s under the 5000mAh typical rating. It does exceed the 4400mAh minimum rating though. Since I cannot have the lowest capacity cells in the batch I am rating them at 4400mAh.
The DC internal resistances for the two cells were 25.9mOhm and 26.2mAh, also incredibly consistent. Both cells performed essentially identically.
Continuous Current Discharge Graphs
Ratings and Performance Specs Graphic
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
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: Get more from Battery Mooch on Patreon.
To see how other cells have tested check out this link: Links To All 21700, 26650, 18350, 18500 Battery Tests
