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
A decent performer, it’s best at around 5A and lower due to voltage sag (like many other high-capacity cells). Other cells perform a little better (check my Ratings & Performance table, link below) but EVE cells are often available at a lower price so they are worth considering if the last bit of performance isn’t the priority.
My thoughts and results below…
Continuous Current Discharge Graphs
Ratings and Performance Specs Graphic
18650 Ratings & Performance Table:
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20700/21700 Ratings & Performance Table:
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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
A decent performer, it’s best at around 5A and lower due to voltage sag (like many other high-capacity cells). Other cells perform a little better (check my Ratings & Performance table, link below) but EVE cells are often available at a lower price so they are worth considering if the last bit of performance isn’t the priority.
My thoughts and results below…
- The 50E has a 15A max continuous current rating in the datasheet but it easily exceeds its 60°C max temp limit at 15A so I am giving it an estimated 10A continuous rating and a 15A non-continuous “temperature-limited” rating. You can run it at 15A but never let the cell get hotter than 60°C.
- DC IR measured 21.1mOhms and 21.3mOhms for two cells. This is fantastic consistency.
- Capacities were 5055mAh and 5056mAh, which is amazing consistency and is above the cell’s 5000mAh rating.
- The standard charge rating is 1A and fast charging is only 2.5A. I recommend staying at 1A or lower for long cell life.
- It has a decent cycle life spec, delivering at least 1000 cycles before dropping to 70% of its original capacity. But this assumes that the discharge stops at 3.0V, not 2.5V. These “narrow” voltage windows for the high capacity cell cycle life specs are common and vary a lot so be sure to carefully read the datasheet before comparing the claimed cycle life of different cells.
Continuous Current Discharge Graphs
Ratings and Performance Specs Graphic
18650 Ratings & Performance 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 & Performance 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
