These Keeppowers look the same, and perform almost the same, as the good performing YDL 18350D. The average performance for these Keeppowers is not quite as good as the average performance of the 10A-rated YDL cells so I am giving this cell a 9A continuous current rating. They all run at about the same temperature. It’s the differences in voltage sag that affects their current rating.
To extend cell life, minimize voltage sag, and increase your safety margin, I recommend staying at 7A-9A or under for these Keeppowers. That’s about 20W-27W per cell. This is a good performing 18350 but all 18350’s are a poor choice for anything above low power levels.
The two cells I tested delivered 1062mAh and 1086mAh. This is decent consistency but they do not meet Keeppower’s 1200mAh rating. I am rating this cell at 1000mAh.
Like all 18350’s I’ve tested the cell-to-cell performance consistency for these Keeppowers is not good. There’s not a huge difference between cells but you might notice it if you have one of the better ones and one of the worst ones.
Two cells were were purchased by me for the purposes of testing.
Ratings graphic: https://imgur.com/a/LiCmEOX
Test report: https://bit.ly/33K2B7h
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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, 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. 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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