Bench Test Results: Vapcell N41 - 10A/12.5A 4050mAh 18650
- By Mooch
- Batteries and Chargers
- 0 Replies
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
This is a very good performing cell. But like all other ultra-high capacity cells you will not see any extra run time unless you are at a couple of amps or lower. Their internal resistance causes too much voltage sag at higher current levels and that causes the cell to reach the low voltage cutoff sooner.
Some specs and observations…
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
This is a very good performing cell. But like all other ultra-high capacity cells you will not see any extra run time unless you are at a couple of amps or lower. Their internal resistance causes too much voltage sag at higher current levels and that causes the cell to reach the low voltage cutoff sooner.
Some specs and observations…
- This cell is rated 3900mAh minimum and 4050mAh typical.
- It has a 10A continuous current rating, which seems reasonable, and a temp-limited 12.5A rating (stop at 60°C).
- At 5A the LT 19660 (Ampace JP30?) and EVE 35V run for a bit longer than this Vapcell N41. But probably not a noticeable difference though.
- At 5A and 10A the Vapcell N41 cell runs for about the same amount of time as the EVE 30P, Molicel P28A, Molicel P30B, Murata VTC6, and Samsung 30Q6.
- As you can see, the N41’s higher capacity rating really only makes a difference at very low current levels. But if you are only drawing a couple of amps this is a top cell to consider using. At 5A it’s still a very good performer.
- The standard charge rating is 1.5A and the max is 2.5A. I recommend staying below 1.5A. Charging at 1A would be good for longer cycle life.
- The two cells I tested delivered 3963mAh and 3971mAh. This is fantastic consistency and exceeds the 3900mAh minimum spec. But neither cell reached the 4050mAh typical spec.
- DC internal resistance was 34.6mOhms and 36.9mOhms for both cells. Not very good consistency but I didn’t see any real difference in their performance at 5A and 10A.
- Like many ultra-high capacity cells, the N41 has a very low max temperature limit of 60°C. This is easily reached in a wrapped up battery pack or if you’re running a single cell hard. Do not allow the cell to go over 60°C.
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...

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...

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.