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  #1  
Old 08-10-2018, 10:45 AM
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Laptop battery question

My poor student daughter is reporting her 6 month old HP Pavilion is losing charge very rapidly. She did a battery health check and got the following diagnostics.

She says she has managed the battery responsibly (not leaving it constantly plugged in). She phoned Curry's for support and they said it wasn't registered so they couldn't help.

I can see that it's lost about 15% of its maximum capacity, which seems a bit poor for 6 months with a perfectly reasonable number of cycles (137 vs design life of 1000), but doesn't explain very reduced battery life in practice.

Also what is "PrimaryCellVoltage4: 0mV"

Is that capacity or charge? Do the cells discharge together or one after another?

Could this be a fault?
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  #2  
Old 08-10-2018, 12:23 PM
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I don't have HP laptops only Lenovo so i'm not up with HP diagnostics but some FAQs here and battery calibration and testing help.

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It appears cell 4 test will register as 0mv if the battery is only 3 cell so there is nothing to test (not sure how many cells is in your battery?). In general recharchable battery manufacturers are very optomistic in their capacity figures so 15% may not be too bad even over just 6months? Also check what a generic battery replacement costs? Oddly your test figures pics don't give any usable indication of the battery required despite serial numbers but Pavillion batteries are sometimes down to 20 or less so may just be worth getting a spare?

Battery life will also reduce as you go along as more and more programs and apps are added by the user over time and many of these update and work in the background using power. Often helps after a while to go into 'settings' and delete unused windows apps or turn off their background usage.
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Old 08-10-2018, 01:01 PM
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I don't have HP laptops only Lenovo so i'm not up with HP diagnostics but some FAQs here and battery calibration and testing help.

To view the link you have to Register or Login

It appears cell 4 test will register as 0mv if the battery is only 3 cell so there is nothing to test (not sure how many cells is in your battery?). In general recharchable battery manufacturers are very optomistic in their capacity figures so 15% may not be too bad even over just 6months? Also check what a generic battery replacement costs? Oddly your test figures pics don't give any usable indication of the battery required despite serial numbers but Pavillion batteries are sometimes down to 20 or less so may just be worth getting a spare?

Battery life will also reduce as you go along as more and more programs and apps are added by the user over time and many of these update and work in the background using power. Often helps after a while to go into 'settings' and delete unused windows apps or turn off their background usage.
Background applications is a thought. The particular example she told me about was carrying it around in her bag closed all day, then using it for a short period on the train. Does anything run in the background when a laptop is closeed?
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Old 08-10-2018, 01:15 PM
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Background applications is a thought. The particular example she told me about was carrying it around in her bag closed all day, then using it for a short period on the train. Does anything run in the background when a laptop is closeed?
Depends on what the laptop is set to do when the laptop lid is closed, if it is just set to disable the screen then programs may run or update when the lid is closed. Even when set on 'sleep' on lid closing there are reports of apps still having run in the background. The only true way to guarantee nothing running would be to fully shut down the laptop between uses.

A guide to closing apps and battery saving:
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Also check on battery usage by App:
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Last edited by LN1; 08-10-2018 at 01:20 PM.
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Old 08-10-2018, 01:37 PM
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Originally Posted by Away View Post
My poor student daughter is reporting her 6 month old HP Pavilion is losing charge very rapidly.

She says she has managed the battery responsibly (not leaving it constantly plugged in). She phoned Curry's for support and they said it wasn't registered so they couldn't help.
Go back to Curry's and tell them they should be covering it; see faulty goods section:-

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Any battery that doesn't last six months is de facto faulty.
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Old 08-10-2018, 01:58 PM
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Go back to Curry's and tell them they should be covering it; see faulty goods section:-

To view the link you have to Register or Login

Any battery that doesn't last six months is de facto faulty.
... was my initial thought.

Very tricky when she's in Leeds and I'm in Gloucestershire and she can't really afford to lose the use of her laptop for weeks at this stage of her course.

I want to make sure we have a cast iron case as Currys/PCWorld are simply slippery.
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Old 10-10-2018, 08:03 PM
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Question. Is the battery one of those you can slip out and replace by just plugging in a new one? If so they should be able to swap it over in a couple of minutes. (As it happens my big laptop has a battery inside the case so changing it would involve a screwdriver, but I don't think this is usual).

And if it's in that state after six months they should definitely be changing it under the guarantee, no matter what she's been doing with it.
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