Thinkpads Forum

Hello again

I'm looking for a new 9 cell battery and I want it cheap. Mine has 73.29 Wh remaining capacity after 57 cycles and 3 years (my machine was previously used mostly on AC power...that's why it looks almost new )

I would prefer genuine or a really good brand.

Any experience with this seller and a battery? http://www.ebay.co.uk/itm/Genuine-Batte ... 1e76b6ec6b

...it looks like some kind of a production sapmple according to a sticker. And if it is fake and it can be proven, it would be free thanks to eBay buyer protection But I would prefer a genuine.

If the seller has so much positive feedback... I tend to trust 'm, unless it's rather obvious.

I think they all go down pretty fast in capacity. Mine sits at 75 Whr after 154 cycles: almost never fully charged, never fully discharged; not even 2 years old.

I wouldn't expect a new one to stay above 80 Whr for a year...

Feedback doesn't say much because people just don't care. I once bought a HTC charger from a seller with great feedback and reviews...and it was sooo fake with smeared printing and having only 2/3 weight of the original

After contacting the seller, he stated that chargers he's selling come from a reputable HK telco operator. And I wouldn't be surprised if it was true, I guess in Asia there are fakes just everywhere.

If you buy a genuine Lenovo branded battery, you usually won't go wrong. If you buy a compatible, don't buy the cheapest and buy from Ebay" experienced seller" with over 99.3% positive feedback. you recommend you view their feedback to read what buyers had to say and if many neg recent feedbacks. I've bought both ways. That's the best advice i can give.

If a battery is good the first month and dies quickly after that... no way to tell from the eBay feedback, since you can only give feedback in a short time windows after the transaction.

jcvjcvjcvjcv wrote:I think they all go down pretty fast in capacity. Mine sits at 75 Whr after 154 cycles: almost never fully charged, never fully discharged; not even 2 years old.

I wouldn't expect a new one to stay above 80 Whr for a year...

My two-yr-old W520 has a Panasonic and it still seems to run almost as long on battery as when it was new:

Design capacity: 93.96
Full charge capacity: 90.87
Cycle count: 90
Manufacture date: 2011-08-09
First used date: 2012-09

Maybe the manufacturer makes a difference. My experience has been that Sanyo batteries lose their ability to hold charge faster than panasonics.

It has been posted many times over, that all decent Lenovo batteries use Panasonic cells.
I have 6- and 9-cell Pana batteries dating back from 2008/2009, most of which still have around 90% of their orig. capacity, some even with over 400 cycles!

Couldn't find any Panasonics So I've ended up with LG. I'll see how it will do.

But according to this it should be OK:
http://forum.thinkpads.com/viewtopic.php?f=45&t=115134

...and it was cheap, just a few weeks old and in a Lenovo sealed box. I love eBay...