I was on Feebay and thought about the Dumpster Brand batteries ! ( Dumpster Brand > Buy some batteries – Throw them in the dumpster cos there so bad )
We all know feebay is flooded with garbage batteries , but I find pleasure in testing them just to see how bad they are . ( Rather than how good )
Have we seen the 9800mAh batteries ? ( 18650 ) Yeah there a joke , unfortunately people are buying them and then doing things with them they should not do .
So lets get on with it !
I will discharge them ( well I did ) @ 0.5A , to 3v to see how much , or how little capacity is actually in these alleged 9800mAh batteries .
I got these as a pair , and the first discharge resulted in :
Battery 1 = 518mAh discharged ( yeah > thats 518 mA )
Battery 2 = 684mAh discharged ( Jaw dropping right )
2nd Discharge :
Battery 1 = 548mAh
Battery 2 = 682mAh
Would it be fair to say these are monumentally bad . Possibly dangerous , life threatening , absolute garbage that should not be for sale anywhere ? ( Would that be fair ? )
And so endith the public service announcement !
—
Always remember , the easiest thing in the world to do , is to expel hot air from your lungs and through some vocal chords ..
The resulting sound may , or may not be worth listening too ….
what a joke, and looking at ebay they sell ton of these and people honestly think they are legit :/ i have even reported a few to ebay but nothing happens.. sad this is allowed….
A few years ago i myself bought those red 18650 3000mah, didnt take long for me to realize what a piece of crap they are and now the madness continues almost 10 000mah scam
...where Frugal meets with Flashlight!
I guess a new limit of mAh for the 18650s has been settled
Some weeks ago I saw a 18650 adverstised as 6000mAh!!! Strange thing is…it is being sold in a very reputable store of electronics from the town! But I couldn’t hold my laugh and laugh to the store’s employee ‘cause of that
Thanks for the heads up on this
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I think whats important is that actual test information is available ( be it good or bad ) , bad in this case …
Always remember , the easiest thing in the world to do , is to expel hot air from your lungs and through some vocal chords ..
The resulting sound may , or may not be worth listening too ….
I feel cheated, my UltraFire 9900mAh has less capacity.
My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/
I’ll take 10 thanks! Can use a battery back up with the total of 98000mah lol.
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Thanks.
My current and or voltage measurements are only relevent to anything that I measure.
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djozz said "it came with chinese lettering that is chinese to me".
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Thx for the test..
We all have friends who claim they buy good stuff from ”wish” or similair sites.
they didnt even got the capacity divide labeled capacity by 10
really poor battery junk
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I wonder if they have a crazy high charge rate too…like 5C! lol. what would that be for a 9000mAh cell…45A? lol
CUT IT OPEN!!! Lets see the goods!
Yes , I do plan on cutting them open ! ( not into the guts )
I have some other plans for these cells ( experiments ) that require de labeling …
Unfortunately the internal capacity is so low that they are next to useless to actually use . ( Which is unfortunate )
Honestly , I think there are people in Chine dumpster diving for factory rejected cells that are then labeled and sold with some crazy capacity claim .
Or perhaps a Government conspiracy to get the west to pay for and dispose of (?) some ones toxic waste ( be a good plan ) .
Always remember , the easiest thing in the world to do , is to expel hot air from your lungs and through some vocal chords ..
The resulting sound may , or may not be worth listening too ….
That is also the case, but these cells are probably manufactured this way as you can see in some of my teardowns: http://lygte-info.dk/info/batteryDisassembly9900mAh%20UK.html
My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/
Nice color and graphics used in the battery label. I would buy them if I knew nothing about 18650 batteries. Good public service announcement.
Always remember , the easiest thing in the world to do , is to expel hot air from your lungs and through some vocal chords ..
The resulting sound may , or may not be worth listening too ….
You can find a couple more LiIon tear-downs, including reused cells on my website (They are also posted on BLF).
Mainly by doing it outdoors, it is not that dangerous to open LiIon batteries.
My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/
actually they do use those cells that most of us in here wouldnt touch with an iron glove and re-wrap them for the so called ultrafire 9800mah battery and the others, they make huge money just look ebay those batteries how many sold.. its crazy…
Its just sad how many people buy and use those batteries in their lights etc without knowing how dangerous and crap they are.
...where Frugal meets with Flashlight!
Many of these batteries are new, not reused, but produced to be cheap batteries with about 500mAh.
Reused batteries has an extra metal plate on the bottom to hide the 4 dots from the spot welding used in a battery pack. When tested they will vary widely in capacity, from dead to fairly decent.
My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/
i might suspect some smaller cell in the big 18650 can..
wle
They exist, but I have never succeed in getting some, maybe because the 500mAh cells are cheaper to produce, than getting a small cell and stuffing that into a 18650 can.
My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/
Wow, just wow..
I usually stay away from anything with Fire in its name. Ain’t worth it.