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Bench Test Results: Brillipower 30A 4100mAh 20700…ridiculously overrated

Discussion in 'Batteries and Chargers' started by Mooch, Dec 29, 2017.

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  1. Mooch

    Mooch Electron Wrangler Verified Member ECF Veteran

    Supporting member
    May 13, 2015
    These tests below 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 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. Never exceed the battery’s current rating and keep the plastic wrap and top insulating ring in perfect condition.

    Testing batteries at their limits is dangerous and should never, ever, be attempted by anyone who has not thoroughly studied the dangers involved, understands the risks, has the proper equipment, and takes all appropriate safety precautions.

    If the battery has only one current rating number, or if it only says "max", then I have to assume the battery is rated at that current level for any type of discharge, including continuous.

    IMG_1803.JPG IMG_1804.JPG IMG_1805.JPG IMG_1806.JPG

    Bottom Line
    This cell has a hugely exaggerated current rating. Discharged continuously at its claimed 30A rating the voltage sag makes this cell almost useless. It delivered only about 350mAh down to 3.2V at 30A, getting hot enough to boil water…dangerously hot.

    This cell’s appearance is identical to the Sanyo NCR20700B but its performance is a bit worse than the Sanyo. I estimate this Brillipower’s ratings to be 15A and 4000mAh.

    Two cells were donated for the purposes of testing by The Cloudy Vapor ( Thank you!

    Continuous-Current Test Results and comparison to Sanyo NCR20700B
    Brillipower Black 30A 4100mAh 20700 CC Tests.jpg Brillipower Black 30A 4100mAh 20700 CC Tests vs NCR20700B.jpg

    Pulse-Current Test Results
    No pulse testing was done as this appears to be a rewrapped Sanyo NCR20700B.

    To see how other cells have tested check out this link:
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