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johnbens
Blue Screen Again
Posts: 4
Registered: ‎04-19-2009
Location: Finland
Views: 1,917
Message 1 of 4

Defective 8cell battery or just poor quality?

When I got X60t from factory, I remember having my 8 cell battery lasting for about 7-8 hours, as is advertized. Few months ago battery suddendly died.

 

I bought new 8 cell battery (Sanyo cells inside) and started using it 2 months ago. But it lasts at maximum only 4-5 hours (by reading from the power manager estimate)!

 

First I thought it might be "warming up" when used more and would start to last longer, but this has not happened. I have also performed battery gauge reset, updated power manager, managed the settings to maximize battery life, and disabled all unneccessary programs. These procedures have not helped. Only hardware change has been upgrading memory from 1gb to 3gb of RAM.

 

Shoud I return my battery as defective or why is this happening? I expected it to have longer lasting charge.

 

The power manager tells me following specs - are they typical for 8 cell battery?

 

Full charge capacity - 72 Wh

Design capacity -  66 Wh (less than full charge capacity??)

 

Voltage -  14.41V

Design voltage - 14.4V

 

Cycle count - 33 (from 4/2009 to 5/2009)

Manufacturer date - 2007-8-29

 

 

 

 

Message Edited by johnbens on 05-23-2009 07:41 AM
lead_org Microsoft MVP Contributor
Microsoft MVP Contributor
Posts: 21,009
Registered: ‎12-19-2008
Location: Australia, Melbourne
Views: 1,906
Message 2 of 4

Re: Defective 8cell battery or just poor quality?

The manufacture date for this battery seems to be a bit old. Maybe sitting in the storage for that long, it has caused a degradation in the battery capacity. 
Regards,

Jin Li

May this year, be the year of 'DO'!

I am a volunteer, and not a paid staff of Lenovo or Microsoft
johnbens
Blue Screen Again
Posts: 4
Registered: ‎04-19-2009
Location: Finland
Views: 1,890
Message 3 of 4

Re: Defective 8cell battery or just poor quality?

Thanks for a thought, I will check this from the seller which is quite large company.

 

Does anyone have any reference data on how much charge capacity should be?

I think this would be handy for also other people, if it reflects realistically the battery capacity.

 

Message Edited by johnbens on 05-23-2009 09:35 PM
Community SuperMod
Community SuperMod
Posts: 4,711
Registered: ‎04-25-2008
Location: US
Views: 1,849
Message 4 of 4

Re: Defective 8cell battery or just poor quality?

The rated capacity is 5.2Ah.

 

A limitation of lithium-ion batteries is that they age, even when not in use. If they are not kept cool, and partially charged, they age even faster.

 

Battery University is a good resource.

I don't work for Lenovo. I'm a crazy volunteer!

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