electronic_cigarette
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Bench Test Results: Hercules RS40 – 20A 4000mAh 21700…very inconsistent, performs poorly https://ift.tt/3pygOhf

Test Report Summary: With cells from the bigger manufacturers becoming harder to find ones like these are becoming more and more important. These cells are available in Europe and appear to be from one of the China manufacturers. Unfortunately they are very inconsistent performers and I cannot recommend buying them. The Samsung 40T is a much better performer.

The three RS40’s I tested delivered 3550mAh, 3607mAh, and 4071mAh. Two of them are not even close to meeting the 4000mAh rating. This is terrible consistency and since the cells I have cannot be the lowest capacity ones in the batch I am forced to rate them at 3500mAh.

The DC internal resistance of the three cells ranged from 14.0mOhm to 16.8mOhm. This is a very wide range and is another indicator of the inconsistent performance of these cells.

All three cells look identical but I cannot rule out this being a mixup of two different types of cells in the same wrap.

The 30A pulse rating is useless, ignore it. There is no standard for setting a “pulse” or “max” rating. In my opinion all of them are set in a marketing meeting, not a test lab, to try to make a cell more competitive in a market flooded with exaggerated current ratings.

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

Full Test report: https://www.e-cigarette-forum.com/threads/bench-test-results-hercules-rs40-20a-4000mah-21700-very-inconsistent-performs-poorly.959159/

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, battery and charger testing and 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, Murata, LG, Panasonic, Molicel, 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 and you use them AT YOUR OWN RISK. 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/

Test Report Summary: With cells from the bigger manufacturers becoming harder to find ones like these are becoming more and more important. These cells are available in Europe and appear to be from one of the China manufacturers. Unfortunately they are very inconsistent performers and I cannot recommend buying them. The Samsung 40T is a much better performer.The three RS40’s I tested delivered 3550mAh, 3607mAh, and 4071mAh. Two of them are not even close to meeting the 4000mAh rating. This is terrible consistency and since the cells I have cannot be the lowest capacity ones in the batch I am forced to rate them at 3500mAh.The DC internal resistance of the three cells ranged from 14.0mOhm to 16.8mOhm. This is a very wide range and is another indicator of the inconsistent performance of these cells.All three cells look identical but I cannot rule out this being a mixup of two different types of cells in the same wrap.The 30A pulse rating is useless, ignore it. There is no standard for setting a “pulse” or “max” rating. In my opinion all of them are set in a marketing meeting, not a test lab, to try to make a cell more competitive in a market flooded with exaggerated current ratings.Ratings graphic: https://ift.tt/3uc1hYh Test report: https://ift.tt/3ke2rhi 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, battery and charger testing and news, and a say in what I test, then please consider becoming a patron and supporting my testing efforts: https://ift.tt/31HWhv7 tests only note the ESTIMATED ratings for these batteries at the time I tested them. Any battery that is not a genuine Samsung, Sony, Murata, LG, Panasonic, Molicel, 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 and you use them AT YOUR OWN RISK. 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://ift.tt/1Oqakc6

Submitted February 20, 2021 at 10:15AM by Mooch315
via reddit https://ift.tt/3qCZfOz}

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