Bench Test Results: EHPRO/Bootes Bronze-Black 3500mAh 30A 18650…just a 10A 3300mAh battery, DO NOT BUY
EHPRO/Bootes (not the EHPRO e-cig company) markets this cell to vapers but their web site clearly states it’s not meant for use with e-cigarettes and that it is a serious misuse of the cell.
We’ve seen retail vendors do this, it’s just a standard liability statement, but when the battery wrapping company does this with their own cells then is it done at our expense?
What should we do when a company is willing to sell us something, pocket the profits, and then say not to use what we bought? If you didn’t buy direct from their web site you’d never know they say not to use with e-cigs. Just something to consider. This is different than what Sony and LG do as they do not market to vapers and they actively try to keep us from using their batterys.
Since EHPRO/Bootes does not want anyone to use this cell with any vaping device I am giving it a Do Not Buy recommendation.
There is no rating on this battery other than “30A MAX”. But if you go to the EHPRO/Bootes web site it says it has a 20A continuous rating. This EHPRO/Bootes Bronze-Black 3500mAh 30A 18650 Battery doesn’t even have the tiny “max continuous discharge” and “max pulse discharge” ratings on the battery wrap that some of the other EHPRO/Bootes cells have.
No customer should have to go on a quest to hunt down the continuous rating of a cell they are using. Any “max”, “pulse”, or “max pulse” rating is useless as we don’t know the pulse length, time between pulses, and the criteria they used to set the rating (temperature? voltage sag? cycle life? A combination of those or other things?). We’re not able to compare this batterys pulse rating to any other’s.
Unfortunately, the 30A “max” rating is preposterous and the capacity is exaggerated too. At 30A the voltage instantly dropped to about 3.10V. EHPRO/Bootes Bronze-Black 3500mAh 30A 18650 Battery appears and performs identically to the 10A 3300mAh Sanyo NCR18650GA.
I am rating this EHPRO/Bootes cell at 10A and 3300mAh for any non-vaping use.
Test report: http://bit.ly/2FHw34w
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 the tables can change at any time as different grade cells appear on the market or we get swamped with fakes. Please, never assume that the ratings in the table 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://