Sanyo 18650GA fakes?

[Hickbeard]

I've just received my 650s from Queen battery.

They only have a QR code and the letter B on them.

I was expecting to see brand, model, etc.

I can't scan the QR code as its too small.

Any ideas?

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[obcd]

You could run a charge / discharge test on one cell to see what capacity it has. A small 6V light bulb can be used as load for the cell.

Simply connect it to the charged cell and monitor the voltage over time. See how long it takes to bring the cell to 3V (considered a safe low voltage treshold)

This test is not the same as 5C - 10C discharging, but it will give a general idea if the cells are usefull.

 

[john61ct]

The question is not how "useful" they are. Longevity can't be known by any initial testing no matter how accurate.

If a vendor pulls bait & switch, they are not to be trusted and I certainly would not consider buying anything from them forever more.

This sort of business practice is a plague on the industry and we should all do our part to help put such scammers out of business.

 

[electric_nz]

Many batteries have few if any markings as they are meant for the wholesale market and are put in laptop batteries or appliances, not sold to the general public.

It looks like the genuine article, see
https://eu.nkon.nl/sanyo-18650ga.html

Sanyo batteries often have the model number faintly etched into the wrap, have a close look under a bright light

 

[Hickbeard]

The question is not how "useful" they are. Longevity can't be known by any initial testing no matter how accurate.

If a vendor pulls bait & switch, they are not to be trusted and I certainly would not consider buying anything from them forever more.

This sort of business practice is a plague on the industry and we should all do our part to help put such scammers out of business.

Yeah exactly. I'll only run big brand and if the supplier turns out not to be reputable Its time to look for new supplier.

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[Hickbeard]

Many batteries have few if any markings as they are meant for the wholesale market and are put in laptop batteries or appliances, not sold to the general public.

It looks like the genuine article, see
https://eu.nkon.nl/sanyo-18650ga.html

Sanyo batteries often have the model number faintly etched into the wrap, have a close look under a bright light

I'll take a look tomorrow at work. Makes sense I guess. Thanks

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[Hickbeard]

You could run a charge / discharge test on one cell to see what capacity it has. A small 6V light bulb can be used as load for the cell.

Simply connect it to the charged cell and monitor the voltage over time. See how long it takes to bring the cell to 3V (considered a safe low voltage treshold)

This test is not the same as 5C - 10C discharging, but it will give a general idea if the cells are usefull.

Cheers bud. I'll see about trying this just for my own knowledge, etc. Thanks

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[john61ct]

So far Queen has been touted as honest and reliable.

 

[Hickbeard]

Yeah why I used them.

They've been helpful via email, etc.

This is my first batch so there's always a little doubt in my mind.

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[Hillhater]

My guess,...
.... the QR code etc looks to be a lazer etched marking , designed to be read automatically by a scanner ?
Not many “fakers” would bother investing in that sophisticated (hidden) detail when they could simply print “SANYO 18650GA” on the wrap.

 

[Peter Sternersson]

I have bought the same type of cell from Tumich.

The letter B and QR code are the same, and on the opposite side you can see a very very faint text, mine says "NCR18650GA 7511".

You must almost look sideways on them in the right light to see.

I´m 95% sure they are geniune...

 

[Hickbeard]

Great. Thanks guys. Puts my mind at ease

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