Unanswered Battey Questions Help Please!

My system is a HP Pavilion ZD8460ea. My original battery is a 14.4VDC 2.0Ah.

This battery is available directly from HP. However HP also list two other batteries that can be used in this system. One rated at 14.8VDC 6.0Ah and the second at 14.8VDC 6.6Ah.

When I search online I never see the 14.4VDC 2.0Ah battery even if I search under the part number of the original battery which is HP Part #374762-001.

Most times what you find is HP Part #DP390A.

If you speak with HP customer support they will always refer you to the original battery. I have sent them too D__N many emails and have yet to receive an answer to my question. After 30 plus emails I finally got them to refer me up the line to a case manager but as yet have not heard from them. I have more questions I want answered than just about batteries.

Can someone please explain to me the advantages/disadvantages of using one in lieu of the other and tell me which one is best?

Also I see reference to high power batteries so I want to know if anyone can point me in the right direction so I can check these batteries out.

I have looked at too many sites and I don't really see much in the way of claims about one battery being better than another.

I have read the battery guide and followed the links to the Battery University but I don't see answers to these questions.

Thanks,
John

 

it sounds very much like you have a 3 cell and the other 2 are 9 cell's.
Weight/size/runtime are the main differences, it would seem, given the spec's. The last one has the largest capacity and should be the heaviest/largest in weight/size also.
Typically, 9 cells are considered high capacity batteries, though you can find 12 cells also but it depends on the laptop make itself.

 

The most powerful battery you can use in your laptop is the 12 cell: HP-P-346970-001
Your current battery is also a 12 cell, but it uses very low capacity batteries.

Here is a site you can buy the 12 cell battery on:
http://www.ebuybatteries.com/product/models/2_HP-P-346970-001_HP+ZD8460EA.htm

K-TRON

 

these are all 12 cell batteries. only a 12 cell battery will fit into this laptop. It has heavy power requirements and even with these didn't get much more than an hour when new.

 

I would like to continue this discussion if I can get anyone to make a comment.
I notice that there are many after market laptop battery manufacturers like Duracell, Energizer, Amstron, Battery Technology, Provantage just to name a few.

What makes one better than the other and how can we the average consumer tell the difference.

Thanks,
John

 

"How do you tell the difference?"

The only thing you really can do is rely on the manufacturer's claims or user feedback. Amazon is a good place for feedback but it's a shame that they limit feedback to those who buy from them.

HP will always lead you to buy their own products.

A 6 a-h battery should be significantly longer lasting than a 2 a-h bat. If an aftermarket battery supplier can offer a higher a-h battery than the OEM at an aggressive price, why even bother with the inferior battery, that is, the 2 a-h, HP Part #374762-001 replacement.

.

 

you cant just put a duracell/energizer battery into your laptop and expect it to work. The laptop is not stupid. Each battery has its own impedance. The system will only accept the battery if it has the right impedance value.
So say energizer had a battery which fit into your system. When you plug it in the battery will do absolutely nothing since the system will reject the battery.
You unfortunately have to buy the hp battery so that this impedance value matches up with the charging circuitry.

From the way it looks, your 12 cell battery is not really a 12 cell. It has the same dimensions as a 12 cell battery, but it has only ~4 cells in it. You can see this because of the large weight disparity between the batteries
If you want the most battery life, go for the 6.8ah battery.

The reason you are getting bad battery life, is because your system uses desktop intel pentium 4 processors. They are horribly inefficient, so no matter how much battery power you have, the system will get really low battery life.

Your better off saving up for a core2duo based laptop, which will have much more power, greater efficiency and so forth.

K-TRON