Ryobi 40V 5Ah pack like Dchomak reported here. I think these are going to start showing up a lot in recycle bins as I have now found another one and dchomak has found like 3. Pack only measured 18V, but every cell was at 4.06-4.07v. Capacity and resistance measurements showed all cells to be in like new condition. Rebuilt into a 5P4S pack for driving a HID spotlight and seconding as a automotive jump starter. Contained 20 Samsung INR180650-13Q's.
Also found one of these 40v slim packs, but haven't broke it down yet:
Yes, I have found 3. Then I actually bought the tool that uses that battery. I got it on clearance, $40.03. (regular price of $160) I made it a point to do that to get the charger for this pack. That charger is $60 separately, plus I got another a new pack and the tool
Of the 3 I found, the first one turned out to be brand new and will charge and discharge at full capacity. I think the reason it was tossed is that there is loose connection of one of the leads that goes to the battery health meter. Sometimes it works and sometimes it doesnāt. I have decided not to risk the repair to the joint as all solder joints a covered with silicone. I may short out something if I try to scrape it away to re-solder. The battery is like new, except I canāt read how full it is. Best to leave well enough alone.
Of the other 2, one will charge and is in perfect health, but will not discharge through the low cutoff circuit. All cells are like new.
The 3rd is toast, all cells are sitting at near zero. I see that a lot in packs in the bin. Sometimes a component on board leaks, taking one or more cells with it.
Canāt wait to see the results of this light. Any light that needs 20! cells has got to be awesome.
This Dyson power pack looks brand new. I found it in the recycle bin. After taking it apart I found that it contained 6 - Sony VTC4ās, (IMR). All cells tested at over 2100mAh. They are rated at 2100mAh. I donāt know why this was tossed. Maybe the onboard BMS board was faulty.
Iām scrapping a 3-year old ASUS ultrabook that bit the dust, and I found it had (2) flat Li-Polys, and the pack was marked as 7.4v 5100 mAh. Trying to think of a good use for those. Maybe build emergency area lights around each one? Anyone try to use these flat cells or have any other good uses in mind?
I had my first successful laptop pull
I opened 3 Lenovo L11S6Y01 rated at 10.8V and 4400mAh. The ebay seller said they wonāt charge any more in the laptop. That was strange since they are not old at all (manifactured in April 2014). Each of them contained 6 Sanyo UR18650A.
Got 2 packs, after prying them open I got 6 samsung icr18650-26c and 6 ān18650 t25l l19r1 18073ā, what looks like to be DLGās? Never heard of those, think that they are some Chinese brand. They came out a non-original replacement pack.
The dlgās where at 2.4/2.7 volts, they are being charged right now. Unfortunately the Samsungās are around 1.9 volts, Iāll try to charge them carefully, I hope theyāll recoverā¦
Amazingly, after digging into two laptop batteries I had at home, I started looking in the Lowes and Home Depot battery recycling bins and, after about two weeks and four battery packs (and one was completely dead - all 5 batteries were at 0v and wouldnāt even register in a charger) I now have about 25 good working 18650 batteries with probably 15 more waiting in two more 18v battery packs, a double-sized Ryobi and a regular-sized Husky. Iām not even anxious to get to them. I had to get a special plastic container to store them in and since I donāt have any Ryobi or other electric tools Iāve stopped checking in the bins. All due to reading this thread. Thanks.
Just cut my hands and lost an hour prying open dead Asus G73 battery pack. Pulled out 8 LGDBB31865 2600mAh cells. 6 of them at around 0.1V, 2 at 2.884V. HKJ rated them as very good cells back in 2011 with 1.5C max discharge rate, I suppose they are safe to charge?
Iād charge the 2x that came out @2.884v and expect them to have some life left in them, though probably at significantly reduced capacity given the state of the other cells in the pack. I wouldnāt do anything with the others except put them in the nearest electronics recycling bin.
Some of my battery pulls.
Donāt know from which laptop packs anymoreā¦
On all of them I have used dremmel to clean remains from poles and all double heatshrinked because some had minor damage on heatshrink and I wanted to be safe.
Wrote numbers and capacity (tested by Lii-500) before heatshrinking.
When you tear a pack apart write down the manufacture the model 3 and what cells came out of which pack . that was / is still the reason for this thread . the info will possibly be helpful to another member .
Great pic with lots of pretty colors
i see sonys sanyos lgās ā¦.purplr panasonic 16650ās /17650ās probably from a sony laptop pack( thought it kind of odd to find pannasonic cells in an oem sony laptop pack )
i have a ton of packs that dont work in laptops.
good ones are saved to fix up laptops we get in and refurb.
but these ābadā packs are going to get torn down once we get this big board build done.
btw most packs are built by companies who specialize in such.
i had an oem sony pack that was new but the latches were broke.was built by simplo.had panasonic 3100ās in it.12 of them!
i wish i had the idea to log the info here.talk about a winner!
Will edit post with specifications later, I just have to take piece of paper where I wrote it from my garage. :+1:
When uploaded pictures I realised I forgot to take it with me and it was too late to go get it :person_facepalming:
Very nice thread. Didnāt know it existed.
My last batch was not as worthwhile as past finds. Had 6 die on the charger and several red ones (no markings) generate too much heat to feel safe using, charging @ 0.5A. Have yet to check capacity of the survivors of this batch.
Previous batches were pretty successful with most rate over 2000mAh and 10+ up to 2700mAh.
Will certainly take notes from now on to see if there is info I can offer.
Have used and upgraded several items around the house.
Shark 20V hand vacuum
Portable O2Cool fan
Harborfreight 3W spotlight to 6 cell.
Just install a 5.5X2.1mm connector and use my balance charger on them.