DV9700T Battery Question

Is it normal for a battery to discharge 15% over 2 days if the laptop is off (i.e. - not standby or hibernation)? I've noticed since Day 1 that this notebook's battery drops to 94-95% overnight when powered down but I never really thought much about it; my old ZD7000 might loose 1-2% overnight but I don't recall it dropping 15% in 2 days.

Thanks!

 

Since the notebook is apart of the 9700 line, I would assume that it is still under warranty. If I were you, I would call up HP and have them replace the battery.

 

Yes, the notebook is still under warranty; I'm trying to establish if I actually have a problem before I start the process with HP.

Thanks.

 

LOL! Valuable info from HP's site:

To summarize: Using your battery or not using your battery shortens the lifespan; using your notebook in a docking station, or playing games, will shorten the battery life. Taking your battery out of your notebook, when on A/C power, prolongs battery life; however the battery will continue to discharge and, if left discharged, will shorten the battery life.

Maximizing the capacity and life span of the battery

After reading the information presented in this document, you should be aware that following conditions negatively impact battery run time and life span.

Factors that contribute to loss of battery capacity

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Li-Ion battery cells suffer gradual, irreversible capacity loss with each discharge-charge cycle. Such aging occurs more rapidly as temperature and discharge loads increase.
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The self-discharge rate of a Li-Ion battery is higher if the battery is left in an unpowered notebook.
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During prolonged storage or non-use, the battery charge will decrease below its recommended low-voltage level.
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Leaving the battery in a depleted condition for an extended period will accelerate the decrease in FCC. Leaving the battery at a high level of charge in a high-temperature environment for extended periods (for example, running a notebook computer in a docking station under a heavy load) will also accelerate the loss of capacity.
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Running high-end applications using the battery accelerates the loss of capacity. For example, playing 3D games will lower FCC faster than using word processing applications.

 

Self discharge rate on room temperature should only be 1-3% per day