Author Topic: 10ah 18650 cells  (Read 13068 times)

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Offline Whales

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Re: 10ah 18650 cells
« Reply #25 on: January 15, 2024, 05:43:27 am »
Inflation is spiralling out of control.  We need to re-issue batteries with new units like kmAh to make them convenient again.
« Last Edit: January 15, 2024, 05:45:33 am by Whales »
 

Offline hfleming

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Re: 10ah 18650 cells
« Reply #26 on: April 16, 2024, 10:16:04 am »
seen some 10000mah lithium ion 18650 calls on ali,anyone tried any?

Yeah, to my shame I drunk-ordered 4 of those 10000mA/h cells out of curiosity. They weigh 22g, whilst my 2200mA/h cells weigh around 48g. From fully charged (4.2V) to empty (2.8V) at 100mA discharge rate, I measured them to be 350mA/h!!!!
 
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Offline Rick Law

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Re: 10ah 18650 cells
« Reply #27 on: April 25, 2024, 03:13:48 am »
It is a shame that the fake market makes shopping for "real" 18650 cells practically impossible.  The 18650's are so convenient for small flash light and little electronic gadgets that one can cook up.

With the more modern (slim) laptops, they already moved away from using 18650's.  So even the re-packed/re-skined battery market will have a sourcing problem.  I suppose consumer 18650 market is or will be a thing of the past.
 

Offline xvr

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Re: 10ah 18650 cells
« Reply #28 on: April 25, 2024, 01:13:47 pm »
99% of batteries on Ali are a fake :( Use another supplier (https://hobbyking.com/en_us for example)
 

Offline SiliconWizard

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Re: 10ah 18650 cells
« Reply #29 on: April 25, 2024, 08:09:00 pm »
seen some 10000mah lithium ion 18650 calls on ali,anyone tried any?

Yeah, to my shame I drunk-ordered 4 of those 10000mA/h cells out of curiosity. They weigh 22g, whilst my 2200mA/h cells weigh around 48g. From fully charged (4.2V) to empty (2.8V) at 100mA discharge rate, I measured them to be 350mA/h!!!!

Yes. :-DD
 

Offline Zenith

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Re: 10ah 18650 cells
« Reply #30 on: April 26, 2024, 01:50:21 pm »
It is a shame that the fake market makes shopping for "real" 18650 cells practically impossible.  The 18650's are so convenient for small flash light and little electronic gadgets that one can cook up.

With the more modern (slim) laptops, they already moved away from using 18650's.  So even the re-packed/re-skined battery market will have a sourcing problem.  I suppose consumer 18650 market is or will be a thing of the past.

In the UK there are several battery suppliers with eshops, which look to sell genuine 18650s and other Li-ion cells by major makers. Prices range from £4 to £8 depending on what you want. They seem to be long term businesses, not fly-by-nights selling a load of rubbish and legging it. There must be similar on-line stores in the USA.

There's a huge market for 18650s for vaping, which doesn't look like disappearing any time soon. Another source of good 18650 cells is your local vape shop, although they'll tend to be a particular type.
 
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Offline Kean

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Re: 10ah 18650 cells
« Reply #31 on: April 28, 2024, 11:42:43 am »
I bought 48 pcs of HG2 18650 from an AliExpress seller that were specified for 3000mAh down to 2.5V.
I've only been test discharging them so far at 1A to 3.0V, and have been getting pretty consistent readings of 1800mAh.

So not great, but certainly not as bad as some reports I've seen - and for the price I paid compared to local trustworthy suppliers I am happy.
I will be assembling these into packs that go inside some 12V SLA shells for backup power application.

Some of my other purchases of 18650 cells and packs in December/January never arrived, but AE did process refunds on those.
 

Offline Zenith

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Re: 10ah 18650 cells
« Reply #32 on: April 28, 2024, 09:00:26 pm »
I bought half a dozen 18650 cells on AliExpress back in the day - 5 years or so back. They were quite cheap. The sellers had good feedback and they appeared to be, according to my charger/analyzer, perfectly good Panasonic 18650 cells. I'm still using them in flashlights.

There were a few suppliers on ebay, who seemed to know what they were selling, and didn't sell 10,000 mAh obvious rubbish. They tested what they were selling and didn't sell tat. I believe ebay got the wind up over the dangers of Li-ion cells, which they they thought were all 18650s and stopped 18650s being sold on their site, although other Li-ion cells could be sold. I haven't looked recently.

These days, if I wanted more, I'd enter "buy 18650 UK" into Google and pick a reputable looking supplier, of which there appear to be several. You can probably buy then from Farnell etc, in which case they are unlikely to be junk.

 

Offline bastl_r

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Re: 10ah 18650 cells
« Reply #33 on: May 08, 2024, 05:35:16 pm »
Hi
Buy from nkon.nl if you can.
Always good stuff. No crap.
 

Offline Rick Law

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(FYI Recall announced) Re: 10ah 18650 cells
« Reply #34 on: June 23, 2024, 05:04:17 pm »
I should think, sourcing manager at Costco should have enough knowledge about batteries to know that 10AH for a LiIon battery pack is dubious could be dubious.  Apparently they didn't.  I can only hope by now they do.

Now what good would a replacement do?  Burn your new house down too?

--------------------------------
Below quoted from Article Published June 22, 2024 1:33pm EDT


567,000 chargers sold at Costco recalled for fire risk Owners of the product should stop using it and contact myCharge for a replacement

Three portable charger models that were sold exclusively at Costco are being recalled after two house fires were blamed on the unit overheating.

The United States Consumer Product Safety Commission announced the recall in a June 20, 2024, release.

The recalled units are the "myCharge POWER HUB All-In-One 10,000mAh" chargers carrying the model numbers "AO10FK-A," "AO10FK-B," and "AO10FK-C," said the commission.

Link to original article:
https://www.foxbusiness.com/lifestyle/567000-chargers-sold-costco-recalled-fire-risk

Edit:
Changed "is dubious" to "could be dubious"
Looking at the slim size packaging again (photo is the original article when scrolling down), there isn't room for a larger then typical cell phone size battery.  But possibly they could have three squeezed in.  Possibly, but would be very tight squeeze.  So "could be dubious" instead of "is dubious".
« Last Edit: June 23, 2024, 05:26:35 pm by Rick Law »
 

Offline tooki

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Re: 10ah 18650 cells
« Reply #35 on: June 23, 2024, 05:09:06 pm »
Hi
Buy from nkon.nl if you can.
Always good stuff. No crap.
A good EU source for genuine lithium ion cells is Reichelt, based in Germany.
 


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