Toshiba battery yields 18500 cells

The last two finished. All settling ~4.22V

Gj,

Thanks for the info!

Jim

You're welcome.

I just tried 4 cells in my UV Solarforce L2P. I had four 16340's using 1 extension, the 18500's fit using 2. Seems brighter with the 18500's, although I'd rather use protected cells with 4 in series.

this laptop battery should be throwwed out because they must be second used batteries inside.

the 18500 battery’s price is about 1.4usd made in china and about 2.5usd made in japan, how could they make a laptop battery and just sell it at 8.99usd with free shipping?

those chinese sellers are ruined chinese business reputation all the time.

i would advise my friends that do not buy those cheap products which are lower price than material costing.

A laptop battery can be cheaper than the cells, if nobody needs a battery for that laptop. A good find for 3AAA lights, thanks Gj.
Regarding never used old batteries I just wonder how the seller can be reasonably sure the battery is not dead. Judging by the cell voltages about 1.9V in other threads, the seller has not tested them.

some sellers do not concern about if the battery is dead, they want to make the prices lower so that buy many second hand batteries and no any testing before making the laptop battery.

they are ruining the chinese international business all the time, i hate them

You can put 18500 inside of a D cell case (nimh) and get a D size LiPo battery.
Or you can use a pipe to make 2 cell battery pack to use inside a maglite, and can use 6 cell bulb.

That battery is for, among others, the Libretto U100/U105 laptops, which were from, apparently, the 2005 timeframe, see:

So, these could be/probably are leftovers “new” packs that the seller are trying to get rid of.

As discussed elsewhere, it appears that if the pack is really new, e.g., in this older thread:

Pulls from a “new” pack come out a little low (in that case, the ones I got all came out of the pack at ~1.9V.

Nice find Gj, I have a couple of lights that I use this size cell in. Just picked up one of these, will give harvesting a go;)

How would a seller test them? All I can think of is to charge them. Then they're not new anymore, right? Or I misunderstood what I read in other threads.

These drop right into those free Harbor Freight flashlights and work fine without an adapter, should need recharging every year or so.

The cells look identical to the ones in your picture. 2 were at 2.23, 2 at 2.35 and 2 were at 2.02. 4 are in my SoShine Max 3 4 bay charger as I write this. The lower 4.

Battery case opened up really easy, tape came off clean, even the tabs were not too difficult to remove. Nice find! Nice price! Thanks for sharing this!

As far as buying these so cheap goes, with laptops getting outdated every year or so, these are almost assuredly old stock that the laptop they were designed for is not longer in production. So they are just recovering some losses. Makes sense to me, at any rate, to get Japanese cells for $1.50 ea works for me!

Thanks again, really appreciate it!

I just noticed this thread for the first time. Thank for finding and sharing this Gj. I bought 2 packs.

My first 4 are up to 3.94V in the SoShine S1 Max V3. I’m thinking they will work nicely in any of my single 18650 lights with a short spacer. :slight_smile: Almost free, considering. I have a single AW 18650 Protected that’s 3400mAh that cost over $20 by itself!

With a couple of smaller lights that actually used to use the 3AAA adapter, this works well and I plan to put them to good use. Now if I could just round up all those lights…

Thanks for the report DBCstm. Please keep us updated.

One of the lights I plan on using these cells in is my Rook. I get tired of fiddling with the 14500's and these are close to the capacity of 3 of 14500's. Plus, I have other lights the 14500's can go in.

3 at 4.21V 1 at 4.20V, put the last 2 on just now. I have no idea how to compute any of that, but it took 2 hours and 17 minutes at 1A charge rate.

In my modded M3, an Efest IMR18650 2200mA cell will allow 4.28A. One of these charged up will allow 4.13A. Not bad! :slight_smile:

I received 2 more today. I don't recall even seeing new 1700mAH 18500's for sale anywhere, usually 800mAH off-brands. This seller ships fast.

Has anyone tried adding a protection circuit to cells? I see FastTech has them. I'd feel more comfortable with protected cells in my 4 cell UV light.

That's an interesting mod. How are you going to bore it out? Will you need contact plates at both ends?

Not sure how it should be bored out. I think I better ask some gurus for advice on that. I'm guessing a drill at high speed in a drill press and moving slow. Not much material needs to be removed. So I could just use a curved file if I had too. The driver takes positive in the center pad. So no mod needed on the driver side. Probably just drop a floatng plate in the bottom on top of the springs so that I can remove it to use 14500's.

Any one figure out the date code on your cells yet? I wouldn't be surprised if they are fairly old, but one can hope they are not.

Mine are sitting at 4) 4.19V 2) 4.20V after some 9 hours of rest time. So they seem to be fine.