Don't know if if someone already posted, but, just in case:
http://cgi.ebay.co.uk/8-x-AA-RECHARGEABLE-BATTERIES-NI-MH-3800mah-CAPCITY-/130438952637?pt=UK_ConsumerElectronics_Batteries_SM&hash=item1e5ec476bd 
They have to be worth a try!

---

Very high CAPCITY and plenty of WITCHES, hope their understanding of electronics is better than their spelling.

EDIT
Just took another look, they are probably IDAEL

---

I don't think the seller manufactured them Roy.

---

Just beware

I've recently had several customers in complaining about our battery chargers. When tested, no problems, so they were asked to bring in the batteries in question that "Would not charge".

Turns out, 1 bloke bought some 3,000 mAH "rechargeables" off ebay, and sent the link to his mates, so they all bought them too.

NiMh 3A my arse. A label banged on some ropey Zinc Chloride's is more like it. There are a lot of fakes going around, and that lot look identical to the batteries I was presented with.

FWIW, 3.8AH out of an AA NiMh? Not a chance.

---

Surprised to see how quickly these have been condemned without the benefit of having been tried/tested.
While I haven't bought any (yet) I do have some 3000mah batteries which I bought from ebay and they have served me well enough.
I thought the sale of goods act protected us from sellers making false claims anyway.

---

According to eBay he is a top rated speller, sorry seller.

If they are junk, would he want the aggro and loss of his status?

As far as the law goes, if they are not NiMH and are being sold as such this is a contravention of the Trade Descriptions Act. I know that I have taken the pee out of his spelling, it just looks unprofessional, but like has been pointed out, one should not be too quick to condemn.
He claims to have sold 616 so far.

EDIT
Sale of Goods Act, goods sold must be “of merchantable quality and fit for purpose”

---

I'm not writing them off, just commenting that the fakes I saw look exactly like those. Who knows?

---

He doesn't understand the Distance Selling Regulations either.

He says that he will not refund the postage if you return the item but the law says he must.

I have bought several item from ebay recently that were not all they were advertised as. One was from a seller with 20,000+ feedback. He changed the description AFTER I bought the item and called me a liar. He was too stupid to realise that ebay saves the exact details of the sale......

We are English, most 'don't like to make a fuss'.

If you buy from the likes of him then do so with Paypal and make sure you have cleared your account and it comes directly from your credit card also. That way you have two lines of defence when it goes wrong.

I wouldn't touch him with somebody else's barge pole.

Les

How do you recon they get the positive feedback?

---

If you look at the feedback you'll see that there has been complaints about batteries. One on the 13 Feb and another 3 Jan.

As for the positive feedback, how many people off the street understand amp/hours?

Also with such a high capacity cell, you'll need a smart charger!

Surprised to see how quickly these have been condemned without the benefit of having been tried/tested.

I'm not surprised at all, since (assuming that 3800mAh is even theoretically possible in AA NiMH, which seems debatable at best) if such capacities suddenly became possible by some massive breakthrough in materials, it'd be pretty unlikely that the first anyone heard about them was in the selling of a non-mainstream brand of cells on Ebay for £1/cell.

As it is, quality manufacturers seem to have pretty much topped out at a [claimed] 2700-2800mAh, with little change in the last N years, pushing current materials about as far as they can, and often sacrificing durability in the process compared to ~2000mAh cells.

On top of that, there have been claimed '3800mAh' cells around on ebay for a while, (some marked as fake Sony cells, others not but still using the sony grey/orange colour scheme) and the tests I've seen on those have shown them to be appallingly low quality fakes.

cpf is offline at the moment, but look at:
http://webcache.googleusercontent.com/search?q=cache:mJzOj2pMnJUJ:www.candlepowerforums.com/vb/showthread.php%3Ft%3D163194%26page%3D1+nimh+3800mAh+ebay+aa+site:candlepowerforums.com&cd=1&hl=en&ct=clnk&gl=uk&client=firefox-a&source=www.google.co.uk 

The chances of these suspiciously coloured '3800' being other than rubbish don't seem very good.

While I haven't bought any (yet) I do have some 3000mah batteries which I bought from ebay and they have served me well enough.

I'd bet that if you tested your '3000mAh' cells in a decent battery analyser, their capacity would be less than the label suggested, and not just by a little (even many quality cells are a bit 'overlabelled'), but by quite a lot.[i]

How do you reckon they get the positive feedback?

If someone delivered quickly to customers who don't have the means to immediately tell how bad the cells are, wouldn't they tend to get reasonable feedback?

It is also common for AA at 2800/3000mAh to actually be based on a low power discharge and yes you do get said capacity, and if you look at the datasheets, you will quickly find out that higher discharge rates reduce the capacity. Same goes for pretty much all batteries, unless you check the data and they are made for C discharge.

---

Reading this thread reminded me of this:-
http://e-group.uk.net/forum/showthread.php?t=6331 
It may be of interest and use.

Surely this is roundabouts and swings?
You buy Low Self Discharge and they have less capacity to start with.
Fully discharging NiMH batteries now and again helps, you can purchase dischargers I believe, but I just made my own with a high watt/low value resistor and a Maplin holder.

---

Though occasional discharging to ~0.9V does seem to be good for NiMH, there seems to be a bit of debate about whether discharging all the way to 0V is bad or not for NiMH cells.

However, for people without discharge functions on a charger, it's easy to wire a suitable power diode in series with a resistor in the discharge circuit for each cell in a homebuilt discharger, which would stop the discharge at ~0.6-0.7V.