Considering how overrated Blackcell’s 3100mAh cells were I am very happy to see them release an accurately rated cell with the true continuous discharge rating (CDR) marked on the wrap.
I do not like seeing a useless “Max” rating on the wrap though, especially when it’s above the CDR number. I hope Blackcell decides to remove it.
So while the Samsung 25R, and certainly any of the newer generation of cells from Sony and Samsung, are a better choice if available this cell is a good option in countries where genuine versions of those other cells are very hard to find, particularly in Asia.
The two cells I tested delivered 2526mAh and 2522mAh at 0.5A down to 2.5V.
I am estimating this Blackcell’s ratings at 21.8A and 2500mAh.
Two cells were donated for the purposes of testing by Blackcell (http://www.blackcelltech.com). Thank you!
Ratings graphic: https://imgur.com/a/JsrRIHD
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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.
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/
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