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Bench Test Results: Murata VTC6A 4000mAh 21700 w/bottom QR code…a great 30A battery, about equal to Samsung 40T http://bit.ly/2RKJpD7

Bottom Line: These cells are great performers, about equaling the Samsung 40T at higher current levels. They perform a little bit worse than the Sony 21700 VTC6A’s I tested earlier but it could be that these Murata’s are a slightly lower grade. I don’t know if that is true or not though.

The Murata VTC4’s, VTC5’s, and VTC5A’s I have tested all essentially equaled their Sony counterparts in performance. I would expect the Murata 21700 VTC6A to do the same but more testing is needed. I don’t think anyone will notice the difference in performance though.

The capacities for the two cells I tested were 4024mAh and 4040mAh at 800mA (0.2C) down to 2.5V. This is fantastic consistency and typical of the cells from the major manufacturers.

Murata does not give this cell a true continuous current rating in the TENTATIVE datasheet, only a “temperature-limited” rating of 40A if you do not heat the cell over 80°C (frakkin’ hot). This rating could change at ANY time.

While this Murata is a great performing cell the Samsung 30T is the better choice at above about 25A/75W.

These cells have a tiny QR code square laser etched in the bottom of the metal can, near the outer edge.

I am giving the Murata 21700 VTC6A a continuous current rating of 30A and a “temperature limited” rating of 40A. At 30A continuous the cell temperature reaches about 80°C, its maximum rating. According to the TENTATIVE datasheet you can run it at 40A if you do not allow it to reach 80°C. I am giving it a capacity rating of 4000mAh.

Two cells were donated for the purposes of testing by 18650BatteryStore (https://www.18650batterystore.com). Thank you!

Ratings graphic: https://imgur.com/a/zuJBOdm

Test report: https://www.e-cigarette-forum.com/threads/bench-test-results-murata-4000mah-21700-a-great-30a-battery-about-equal-to-samsung-40t.893883/

I want to work for the vaping 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 and testing news and a say in what I test then please consider becoming a patron and supporting my testing efforts: https://www.patreon.com/batterymooch

These tests only note the ESTIMATED ratings for these batteries at the time I tested them. Any battery that is not a genuine Samsung, Sony, LG, Panasonic, or Sanyo can change at any time! This is one of the hazards of using “rewrapped” batteries 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 personal injury or property damage. They are not meant to be used outside of a protected battery pack. Never exceed the battery’s continuous current rating and keep the plastic wrap and top insulating ring in perfect condition.

Any rating in my ratings tables can change at any time as different grade cells appear on the market, we get swamped with fakes, or new information becomes available to me. Please, never assume that the ratings in the tables are permanent and will never change! Always download the latest version before considering any cell purchase.

To see how other cells have tested check out this link: https://www.e-cigarette-forum.com/forum/blog-entry/list-of-battery-tests.7436/

Bottom Line: These cells are great performers, about equaling the Samsung 40T at higher current levels. They perform a little bit worse than the Sony 21700 VTC6A’s I tested earlier but it could be that these Murata’s are a slightly lower grade. I don’t know if that is true or not though.The Murata VTC4’s, VTC5’s, and VTC5A’s I have tested all essentially equaled their Sony counterparts in performance. I would expect the Murata 21700 VTC6A to do the same but more testing is needed. I don’t think anyone will notice the difference in performance though.The capacities for the two cells I tested were 4024mAh and 4040mAh at 800mA (0.2C) down to 2.5V. This is fantastic consistency and typical of the cells from the major manufacturers.Murata does not give this cell a true continuous current rating in the TENTATIVE datasheet, only a “temperature-limited” rating of 40A if you do not heat the cell over 80°C (frakkin’ hot). This rating could change at ANY time.While this Murata is a great performing cell the Samsung 30T is the better choice at above about 25A/75W.These cells have a tiny QR code square laser etched in the bottom of the metal can, near the outer edge.I am giving the Murata 21700 VTC6A a continuous current rating of 30A and a “temperature limited” rating of 40A. At 30A continuous the cell temperature reaches about 80°C, its maximum rating. According to the TENTATIVE datasheet you can run it at 40A if you do not allow it to reach 80°C. I am giving it a capacity rating of 4000mAh.Two cells were donated for the purposes of testing by 18650BatteryStore (http://bit.ly/2RyVUSr). Thank you!Ratings graphic: http://bit.ly/2VNBVP8 report: http://bit.ly/2QHgU4Q want to work for the vaping 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 and testing news and a say in what I test then please consider becoming a patron and supporting my testing efforts: http://bit.ly/2AhNBAy tests only note the ESTIMATED ratings for these batteries at the time I tested them. Any battery that is not a genuine Samsung, Sony, LG, Panasonic, or Sanyo can change at any time! This is one of the hazards of using “rewrapped” batteries 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 personal injury or property damage. They are not meant to be used outside of a protected battery pack. Never exceed the battery’s continuous current rating and keep the plastic wrap and top insulating ring in perfect condition.Any rating in my ratings tables can change at any time as different grade cells appear on the market, we get swamped with fakes, or new information becomes available to me. Please, never assume that the ratings in the tables are permanent and will never change! Always download the latest version before considering any cell purchase.To see how other cells have tested check out this link: http://bit.ly/1Oqakc6

Submitted January 13, 2019 at 12:05PM by Mooch315
via reddit http://bit.ly/2VXpO26}

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