I use a Chuwi v89 tablet with an Intel Atom Z3735F chipset and 2 GB of RAM. It dual-boots Windows 8.1 with Bing and Android 4.4.4. On Windows, battery drain while in sleep mode is upwards of 3%/hr with all radios turned off. In Android, less than 1%/hr with Wi-Fi on.

I have run powercfg /sleepstudy, which marks every sleep cycle as a drain (without displaying the actual amount drained (this may probably be because of a cheaper battery meter chip), but the Top Offenders are all green, with very little time on. I am more interested in using the Windows side rather than the Android one, so I want to know, is there any other way to detect what's happening when the tablet is asleep?

PS: all drivers and updates installed correctly

Hi,

Have you tried to update the BIOS, and the motherboard chipest drivers? I recommend you manually look for the related information in the manufacture website. Or just as you mentioned, it is related to the battery's performance, as we know, cheaper and expensive battery will have different performances.

For Windows 8.1 system, please turn off any background running processes and bluetooth device if you have to check the result.

Regards

Hi, thank you for replying!

No, I haven't tried to update the BIOS, I must see if I can find a newer version. Nor have I tried updating the chipset drivers, I need to see if Intel provides chipset drivers regardless of the motherboard.

I think the battery itself is fine, since drain while in use is normal. The only problem is the standby drain.

Bluetooth is off when not in use (otherwise the drain would top 5%/hr). What do you mean by turning off background running processes (other than closing programs)?

Again thank you for your help!

What do you mean by turning off background running processes (other than closing programs)?

Apologize for my unclear description, what I referred to is turning off running programs including background running programs.

Regards