Need a new battery for my Dell d620...is this one good?

My battery dies like in 10 minutes. I was looking at this battery and it says "EXTENDED". What exactly does that mean? I'm guessing physically. Looks like the black part would make an arm rest.

This is the only one on ebay that I found to look decent. All the others are no name brand ones and are probably cheap ones from china, but this one looks good. What do you think?

EXTENDED Battery for Dell Latitude D620 D630 Precision - eBay (item 160439569176 end time Jun-27-10 19:56:37 PDT)

 

Its a generic battery and it looks like its rated at only 73Whr's. The genuine D620/D630 battery is 85Whr's. It is much cheaper though so it might be worth the risk.

 

What does 73whr mean? Also, how much is the genuine one?

 

He has another one that is 85whr but $30 more. Worth it?

Dell Latitude D620 D630 Precision M2300 Battery NEW - eBay (item 160436277527 end time Jun-17-10 18:27:23 PDT)

 

Ok so I did a google search and apparently this brand of battery is really good. I think I might get it. But is the 85whr worth the extra $30?

 

Any other opinions?

 

You should definately get a Dell OEM battery, aftermarket ones are not worth the money. They don't last as long, fail much quicker, and could potentially damage your system. I've been able to find new Dell OEM batteries in the $40 range.

I have both the 6-cell and the 9-cell, and there are both advantages and disadvantages. The 9-cell is quite heavy, and it muffles the speaker. My 6-cell (original one that shipped with system in 2008) lasts about two hours. I only put in the 9-cell when I need maximum battery life.

 

But that brand of battery that I posted in those ebay links has gotten excellent reviews, and they have been out for quite some time now. Hmm...decisions decisions.

 

They may be a better aftermarket brand than others, but theres no way they are better than OEM. Problems with aftermarket batteries don't happen immediately, the reviews aren't done long term.

 

I bought a genuine 9-Cell Dell Battery off of eBay for my D620, payed about $70AUD. Batteries were not meant to be cheap, if you want quality, you have to pay for it. Keeping in mind, you get a dodgy battery, it can cost you your system.

This is the one I bought; NEW GENUINE Dell Battery D620/630 9CELL PD685 312-0386 - eBay (item 170485579661 end time Jun-12-10 02:57:46 PDT)

If that isn't genuine, then they do a darn good job of making it genuine.