Are these Panasonic batteries?

Batteries, Chargers, and Battery Management Systems.
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emr   1 mW

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Are these Panasonic batteries?

Post by emr » May 09 2018 6:36am

Two weeks ago I purchased a 52v 14ah 14s4p battery (from China - UnitPackPower) as part of a TDSZ2 commuter build. The batteries were advertised as Panasonic/Sanyo 18650GA.
https://www.aliexpress.com/store/produc ... 11636.html\

The battery arrived today and I thought I would just check the contents to ensure they are what was advertised.
Image

These batteries have a 'Made in China' label. I had heard that Panasonic are made in Japan. Can anyone advise if these are likely to be Panasonic/Sanyo, or if the seller has advertised falsely?

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Alan B   100 GW

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Re: Are these Panasonic batteries?

Post by Alan B » May 09 2018 6:49am

http://budgetlightforum.com/node/49992

The above discussion reports that there are versions made in China and Japan, both are Panasonic/Sanyo.

EbikeAus   100 W

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Re: Are these Panasonic batteries?

Post by EbikeAus » May 09 2018 6:51am

Sanyo
Choose LiFe 8)

May all your batteries be fully charged and perfectly balanced :P

emr   1 mW

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Re: Are these Panasonic batteries?

Post by emr » May 09 2018 7:40am

Thanks to you all for your replies and link to other thread. It appears I don't need to be concerned re the battery authenticity.

Cheers emma

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flippy   10 kW

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Re: Are these Panasonic batteries?

Post by flippy » May 09 2018 5:11pm

i have some reservations about this. i have about 400 original GA cells here from nkon, wich i am 100% confident they have the real deal and i buy them in their original cartons in their carboard boxes:

Image

backdrop is 1 half of a battery i am building and extends another 20cm up....

these cells are 100% genuine. note that they dont have any markings, only a small QR code with the factory run coding on under the red film wrap.
the pic you showed looks like they copied the markings of a PF or B cell and put GA on it. but the text seems just ever so slighty "off". can also be the potato quality.

here is a genuine PF:

Image

note the coding under the foil:

Image

also, having different color wraps is EXTREMELY strange for these high end cells. i never ever have seen differences in color from wildly different batches.


original quality:

https://i.imgur.com/kQjbinw.jpg
https://i.imgur.com/XCf0Gku.jpg
https://i.imgur.com/rkcHSyw.jpg
if you read the barcode you can see it is a original box with all the factory coding on it.
Lithium beats liquid dinosaurs.

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Alan B   100 GW

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Re: Are these Panasonic batteries?

Post by Alan B » May 09 2018 8:35pm

Do a discharge cycle and compare to manufacturer's specs.

Labels can change. The proof is in the performance.

Voltron   1 MW

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Re: Are these Panasonic batteries?

Post by Voltron » May 09 2018 10:03pm

I think the one very different color one just has a piece of kapton take over it... And when you zoom in it has the faint qr under the lable too.

markz   100 GW

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Re: Are these Panasonic batteries?

Post by markz » May 09 2018 10:46pm

Where do you live and how long did it take for batteries to arrive?

flippy wrote:
May 09 2018 5:11pm
i have some reservations about this. i have about 400 original GA cells here from nkon, wich i am 100% confident they have the real deal and i buy them in their original cartons in their carboard boxes:

Image

backdrop is 1 half of a battery i am building and extends another 20cm up....

these cells are 100% genuine. note that they dont have any markings, only a small QR code with the factory run coding on under the red film wrap.
the pic you showed looks like they copied the markings of a PF or B cell and put GA on it. but the text seems just ever so slighty "off". can also be the potato quality.

here is a genuine PF:

Image

note the coding under the foil:

Image

also, having different color wraps is EXTREMELY strange for these high end cells. i never ever have seen differences in color from wildly different batches.


original quality:

https://i.imgur.com/kQjbinw.jpg
https://i.imgur.com/XCf0Gku.jpg
https://i.imgur.com/rkcHSyw.jpg
if you read the barcode you can see it is a original box with all the factory coding on it.

Raisedeyebrows   1 kW

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Re: Are these Panasonic batteries?

Post by Raisedeyebrows » May 10 2018 12:05am

A quick google image search shows GA cells with text, without and more than one different type of text as well.
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Above all run on 14s4p 52v li-ion
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flippy   10 kW

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Re: Are these Panasonic batteries?

Post by flippy » May 10 2018 4:11am

markz wrote:
May 09 2018 10:46pm
Where do you live and how long did it take for batteries to arrive
i live 20 minutes from nkon, so it took me 45 minutes to get the cells on my desk after ordering them. :mrgreen:
Raisedeyebrows wrote:
May 10 2018 12:05am
A quick google image search shows GA cells with text, without and more than one different type of text as well.
there are different versions, yes. but that does not change the fact that the cells in the pictures have different shades of red wrap, usually a trigger for me. also the bulk packaging does not seem to have labels on them and why would a chinese factory buy the consumer labeled ones when the OEM version is cheaper to buy...
Lithium beats liquid dinosaurs.

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Kris Lan   100 µW

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Re: Are these Panasonic batteries?

Post by Kris Lan » May 19 2018 2:26am

How about coming to our factory to have a look ?

Regards,
Kris.

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