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, Ampace, Sinowatt, 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 to help lower the risks and extend cell life, 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
A very good performer, equal to the Vapcell F58/F60/F63, and a bit longer running than the Lishen LR2170SK at 5A and 10A. The Samsung 55E performs a bit better (runs longer) thuogh than this cell.
The 12.5A “Max Discharge Current” rating in the datasheet seems reasonable. Just never let this cell reach the 70°C max temperature limit.
Like all ultra-high capacity cells this is not a “power” cell! You won’t see any of its extra capacity if you run it at above a few amps. I recommend staying under 2A-3A if you want all the extra capacity.
Some notes…
Continuous Current Discharge Graphs
Ratings and Performance Specs Graphic
18650 Ratings & Performance Table:
21700 Ratings & Performance Table:
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.
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 to help lower the risks and extend cell life, 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
A very good performer, equal to the Vapcell F58/F60/F63, and a bit longer running than the Lishen LR2170SK at 5A and 10A. The Samsung 55E performs a bit better (runs longer) thuogh than this cell.
The 12.5A “Max Discharge Current” rating in the datasheet seems reasonable. Just never let this cell reach the 70°C max temperature limit.
Like all ultra-high capacity cells this is not a “power” cell! You won’t see any of its extra capacity if you run it at above a few amps. I recommend staying under 2A-3A if you want all the extra capacity.
Some notes…
- Definitely not 5800mAh as the model number might suggest. The datasheet only lists a 5570mAh minimum capacity rating and the two cells I tested delivered about 5670mAh average.
- The standard charge current rating is 1.1A and the max is 2.7A . Stay at 1.1A or lower for longest cell life.
- The M58T’s ’s DC IR measured 18.6mOhms and 19.1mOhms, decent consistency.
- The metal can has a QR-style code box near the top. This is a great way to help authenticate an unwrapped/rewrapped cell. Having the code box does not guarantee that it’s a M58T but not having it (at least for now) means it’s definitely not an M58T.
Continuous Current Discharge Graphs
Ratings and Performance Specs Graphic
18650 Ratings & Performance Table:
21700 Ratings & Performance Table:
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.
