Help identifying some laptop pulls...now..."Secret Goo Removing Tips for Laptop Battery Recyclers!"

Batteries and Chargers Rechargeable Batteries
1

I dropped by my local Home Depot yesterday, stuck my hand inside the grab-bag o’ batteries (recycling bin) and pulled out a Dell laptop battery. After tearing it apart I found these

Sanyos…maybe 2000mAh? I searched and couldn’t find a thread that told what capacity they were, by color.

EDIT: Figured THAT one out! ^

Anyway, they all read over 4v when I got them out of there and seem to be holding 4.17v today.

You sure can’t go grab a handful of free Eneloops anywhere…lovin’ the 18650s!!

Thanks BLF!

NOW…

EDIT: Let us know if you have a great solvent for removing the goo from pulled batteries!!

2

Nice score. Are there faint water marks on the wrapper. Should see a line that says Sanyo with a model number. Next line should have a date code.

3

Like ImA4Wheelr said, those look to be Sanyos. The ones I’ve pulled have all had a faint raised imprint in the wrapper.

4

Yes, the imprint says “SANYO R1112” then under that it says “035B”

5

OK, think I’ve got it. R1112 means UR18650A - nominal capacity 2150mAh

O35B means 35th week of 2010.

6

Very nice! :smiley:

7

Sorry for opening this thread, I couldn’t find anything about these batteries yesterday.

More practice at tearing these packs apart has made it go much quicker and easier, EXCEPT….does anyone have tips on getting that gummy double-sided tape off of these things? I’m sore from clawing at it! ‘Goo Gone’ helped some, but there must be a better way.

Thanks!

8

Hey again. I just roll it off by using the pad of my thumb. It kind of looks like a barrel when finished. Hard to describe.

9

Thanks IA4W, I know exactly what you’re saying, I tried that and it ‘sort of’ worked. This stuff was r-e-a-l-l-y gummy though! If not for Goo Gone I’d still be cleaning. Thought there might be a real secret formula that makes that crap disappear!! :slight_smile:

10

How did you find the codes for the date? Are the codes for dates interchangeable with other brands?

For cell capacity I've been having good luck with this formula, if you ever wanted to guess cell mAh from what the laptop pack says:
[(Total Pack Capacity (mAh) * # of cells in pack) / # of parallels] / total # of cells = mAh per 18650 cell.

11

I used meths to get rid of the glue on the pack I tore down, worked pretty well. Any spirit would do the job, I bet.

12

The solvent heptane makes adhesives temporarily forget how to stick. Found in some rubber cement thinners or as a commercial product called Un-Do (at 10 times the price).

13

Thanks guys! Keep’em coming!!

14

Try WD40 to help get the goo off.

15

Oh yeah! I’ve used it on motorcycle stickers and it worked great. Thanks!!

16

just what i came here to say

start with very little and use a bit more if needed, you will have to remove it afterward (dish soap works well, but make sure not to get any metal parts of the battery wet)

17

Invisible Glass, great solvent, evaporates quickly leaving no residue. Use sparingly, spray a little on a paper towel and wipe.

http://www.autogeek.net/stoninglas.html?productid=stoninglas&channelid=FROOG&utm_source=CSEs&utm_medium=GoogleProductSearch&utm_campaign=CSE&gclid=CK3rwuC1z7oCFVSZ4AodnmYA3w

http://www.amazon.com/Stoner-91166-Invisible-Glass-Cleaner/dp/B0007OWD2M

18

Most of the products will work. The trick seems to be patience: soaking a paper towel with your Goo Gone, WD40, etc., wrapping the cells, and leave them for 30 minutes or so to soak. When you return the glue wipes off with no effort.

19

I just rewrap with heat shrink, and label them.

20

Wow, great ideas! Makes me want to go to HD & get some more!!