Broke down some laptop batteries, but what are these?

n10sivern · 2018-12-07T14:02:59.000Z

I’ve have several laptop batteries I finally broke down for the 18650’s. Got some decent batteries, but I don’t know what the ones in the last picture are. TD18650 2000mAh EI12 EJ09. Just crap batteries?

wstrachan · 2018-12-07T14:54:10.000Z

The green ones are Sony VTC5 or VTC6, the lavender ones are Samsung ICR18650-28A.
Can’t tell you what the red ones are with no codes or markings. Anyone?

n10sivern · 2018-12-07T15:01:33.000Z

The red are sanyos. It’s the purple ones in the last picture that I don’t know. I know the others.

DavidEF · 2018-12-07T15:45:48.000Z

An internet search for “TD18650” li-ion brings up a brand called GP Batteries, which I’ve never heard of before, that has/had a TD18650 cell. So it very well may be a cheap cell. Did it come from an OEM pack or from a third party replacement pack? Do you have a way to test it?

n10sivern · 2018-12-07T16:28:37.000Z

I’m gonna test them. They are only 2000mAh so if I toss them no biggie. I could use them for cheap lights around the house. I think they came from a no name laptop battery

ChrisGarrett · 2018-12-07T18:46:24.000Z

wstrachan:

The green ones are Sony VTC5 or VTC6, the lavender ones are Samsung ICR18650-28A.
Can’t tell you what the red ones are with no codes or markings. Anyone?

No, they’re not.

I’ve got 16 Sonys here that are date coded 2002, from Sony VAIO packs my brother gave me.

They’re Sony’s 2000-2200mAh li-co jobbies, most probably.

Date code suggests Saturday November 14th 2009.

No reason to use a ~30A cell in a laptop, lol.

The Samsung code suggests Friday December 3rd 2010, so just over 8 years old.

Don’t bang on them hard, either in charging, or discharging. I keep my LT pulls at 1.5A, or below.

As for the GP pink ones, GP is a big battery company noted for good NiMH batteries, like the GP ReCyKos and lauded in the RC hobby arena.

Chris

AguassissiM · 2018-12-07T21:27:13.000Z

to me they look like Panasonic 2450mah @4.5ah max discharge if the ring is white if translucent it is a re-wrap of the same Panasonic 2450mah

Perhaps this will help you to id the batteries:

drive.google.com

18650 Lithium Ion Battery Identification Reference.pdf

Google Drive file.

Credit for the link goes to paxtana @ ElectricBikeForum.

mattlward · 2018-12-07T21:20:17.000Z

I had not seen that page before… awesome resource!

snakebite · 2018-12-08T00:35:13.000Z

if they are gp then probably decent.
even generics from cheap packs aint too bad nowadays.
test em.

snakebite · 2018-12-08T00:40:52.000Z

the green are sony but not high drain/vtc.
they are common lico.

wstrachan:

The green ones are Sony VTC5 or VTC6, the lavender ones are Samsung ICR18650-28A.
Can’t tell you what the red ones are with no codes or markings. Anyone?

n10sivern · 2018-12-08T21:23:18.000Z

Well, had to toss the Sanyo batteries. They did the usual and got really hot when charging. The rest have all taken a charge. I’m gonna wait a couple weeks and throw away the ones with significant self-discharge, then I’ll do a capacity test and throw away the ones that are sub-optimum.

Jerommel · 2018-12-08T21:50:00.000Z

I have a bunch of pulls too.
Old and weak…
Not suitable for more than 1 Ampere current.
But i made a block of 9 pieces (paper wrapped 18650s brand or type unknown) in parallel and i can amplify music with a tiny 2 x 2 Watt class D amplifier board for a few weeks (not continuously though).
Got some small Magnat bookshelf speakers on it and it’s definitely loud enough.

Planning to do the same with the rest of the pulls and make a lantern.
I think i still have 9 pulls that’ll work well enough.
It makes for a solid base that’ll be hard to knock over.

Overmind · 2019-01-18T10:07:43.000Z

Green Sonys are 2200mAh.
Ugly pink ones can be confused with 2600 Samsungs but they are clearly 2000mAh ones.
For red Sanyos show us the cap color and I can tell you he capacity.
Purples in lower area are 2800mAh Samsungs.