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, Reliance, 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 good performing energy cell, about equal to the other 3000mAh energy and power cells at up to about 10A. Check the Ratings & E-Scores table for the numbers:
https://www.patreon.com/posts/18650-21700-e-138053835. It‘s definitely worth considering if you have a low-to-moderate power application and a lower price is a priority over max performance.
Some info…
Continuous Current Discharge Graphs
Ratings and Performance Specs Graphic
18650/21700 Ratings & E-Scores and Recommended Batteries Tables:
The links are in my public Patreon pinned post: https://www.patreon.com/posts/pinned-post-137974946
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 good performing energy cell, about equal to the other 3000mAh energy and power cells at up to about 10A. Check the Ratings & E-Scores table for the numbers:
https://www.patreon.com/posts/18650-21700-e-138053835. It‘s definitely worth considering if you have a low-to-moderate power application and a lower price is a priority over max performance.
Some info…
- These had the CE mark and appear to have an August 30, 2024 date code but no CCC*** certification. Did Tenpower get an export-only or testing/evaluation exemption?
- The two cells I tested delivered 3166mAh and 3179MAh. That’s below their 3200mAh nominal rating but above their 3100mAh minimum. I’m rating them at 3100mAh since I cannot have the lowest capacity cells in the batch.
- They would reach a bit over their 60°C max temperature limit at 10A (down to 2.5V) so I rated them at 8A continuous with a 10A temp-limited rating (to 60°C).
- Standard charge rate is 1.55A, max is 3.1A. I recommend staying at 1.5A or below for long cell life, 2A max.
- Max cell size (datasheet spec) = 65.20mm x 18.55mm diameter.
- Max weight (datasheet spec) = 47gms.
Continuous Current Discharge Graphs
Ratings and Performance Specs Graphic
18650/21700 Ratings & E-Scores and Recommended Batteries Tables:
The links are in my public Patreon pinned post: https://www.patreon.com/posts/pinned-post-137974946
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.
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