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
In my opinion, this is a rewrapped EVE 40PL…looks and performs identically. The 40PL is a great performing cell and so the S41 also performs great.
The S41 will get a 40A estimated continuous current rating from me and 70A temp-limited (to 60°C) rating. The EVE-wrapped 40PL received the same 45A rating as in the EVE datasheet because EVE sets an 80°C temp limit.
Vapcell sets a 70°C limit for continuous operation and a 60°C limit if pulsing at 70A. I don’t know why, they perform the same as the EVE-wrapped 40PL’s.
Some other comments…
Continuous Current Discharge Graphs
Ratings and Performance Specs Graphic
18650 Ratings & Performance Table:
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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.
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
In my opinion, this is a rewrapped EVE 40PL…looks and performs identically. The 40PL is a great performing cell and so the S41 also performs great.
The S41 will get a 40A estimated continuous current rating from me and 70A temp-limited (to 60°C) rating. The EVE-wrapped 40PL received the same 45A rating as in the EVE datasheet because EVE sets an 80°C temp limit.
Vapcell sets a 70°C limit for continuous operation and a 60°C limit if pulsing at 70A. I don’t know why, they perform the same as the EVE-wrapped 40PL’s.
Some other comments…
- Vapcell sets a 4000mAh minimum/4100mAh typical capacity rating.
- Vapcell’s charge ratings are 3A Standard Charge and 6A Quick Charge Current.
- EVE’s charge ratings are 2A standard and 8A max. I recommend staying at 2A or lower for good cycle life.
- The S41’s DC IR measured 5.4mOhms and 5.8mOhms, good consistency.
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
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.
