While this cell has an exaggerated current rating is it a good performer. It is identical in appearance and similar in performance to the Golisi S35 and Efest 35A 3700mAh 21700’s.
Both of these Listman cells had a bit over 4000mAh capacity. While this is a good thing it indicates that this cell might not be the exact same cell as used by Golisi and Efest.
Upon learning that this cell had an exaggerated rating, iJoy (the ones who donated the cells for testing) told me that they will instruct the factory to change the rating on the wrap from 40A to 30A. While I would definitely prefer that a cell was tested and rated accurately before being sold I am glad that iJoy is willing to change the exaggerated current rating.
There are earlier versions of this cell with a useless 60A “pulse” rating on the wrap. This was a ridiculous rating and I am glad it was removed.
I am estimating this cell’s ratings at 30A and 3800mAh minimum, though you might get more capacity from them than that.
Two cells were donated for the purposes of testing by iJoy (https://www.ijoycig.com). Thank you!
Ratings graphic: https://imgur.com/a/NMgMqzI
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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.
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