Y400 standby battery dead in a week ??

Greetings,

My Y400 battery is labeled 6700 mAH, if I have it completely shutdown and off, the battery is fully drained after sitting for a week. Is that normal, is the battery defective?

Windows 8 doesn't imply the battery is not "healthy", and it seems to fully charge and last the pitiful 3 hrs like everyone complains about.

I'm not accustomed to seeing a fully powered down laptop battery full discharge sitting for a week?

Tks!
ND

 

Happened to me too. I was very surprised. Did you let the laptop sit for a week with the battery installed? I think the battery leaks when attached even if the laptop is completely powered off.

 

Would the Always-On USB ports be the cause of the battery leak?

 

I don't see why it would be. It's only on when the laptop is in sleep, not when turned off.

 

Not true. It will be on all the time even if your computer is off. You can disable it from bios.

 

Hi All,

I got my y400 about a week ago and also experienced that with it turned off and unplugged for 4 days the battery went from 100% to 40%. I called tech support which really didn't help.

Juliant - Did you experience the same problem? Does disabling the "always on usb" in the bios correct this problem?

 

I didn't try it. I only brought that up because you can enable and disable the 'power' in that usb port. I use this system every day and I do not think I will be able to notice any difference. Maybe someone else?!

I know that it is a known fact of battery drain on all the laptops except MacBook, but even those have this issue after a month of not using them. The only power efficient systems I saw so far without draining any power, are android based mobile phones. Please correct me if I am wrong.

 

Well my previous laptop was an Acer Timeline X Core i5 model which is awesome with the whole battery draining issue. If I leave it unattended for 2 weeks, unplugged, it will dip down from 100% to about 98%. The next machine I picked up was a cheap and simple Acer Chromebook with a 4 cell battery. If I leave it unplugged for about a week it will dip down about 20%. But this Lenovo is awful, its draining about 15-20% per day. Seems like poor craftsmanship if you ask me.

 

LADIES! The USB ports are ALWAYS on! That was pin-pointed on Lenovo's forum! Feel free to google it Hope this helps

 

Went into the bios, and confirmed that USB powered on was DISABLED

 

There's probably a battery leak somewhere. With always-on USB disabled it still drained super fast for me.

With that in mind if you're gonna store this machine charge the battery to 50% and take it out. Not good for the longevity of these Li-ion batteries to store them at 0% charge for a long time.

 

Silly question, but are you sure you're doing a full shutdown, and not Standby? Because the time periods you're mentioning (100% --> 0% battery) matches almost exactly what you would expect if you had your laptop on Standby (not a full shutdown). Standby drains about 2% of the power of a fully powered-on laptop. That means the Lenovo Y500 should get about 150 hours on standby, which is about 6.25 days.

Two things I would recommend testing to help isolate the problem:
1) Leave all USB devices unplugged during this test. This will test for any problems related to USB port power settings not being properly recognized (e.g. a bug in the BIOS power settings)
2) After you shut down your laptop, remove the battery for 10 seconds, and then re-insert it. This will test for any problems relating to your system (or Windows) putting your system into a Standby mode instead of a full shutdown mode.

If you can walk away from your laptop for a full day, and still have 99% - 100% battery life, then you know the problem is either related to USB power settings or Windows Standby mode.

Not true. If you have the Always On USB setting enabled in BIOS, then that one specific USB port will always provide power, even if the laptop is completely powered off. You can test this yourself by plugging in a smartphone or tablet USB charger into that port when your laptop is completely powered off.