Battery Drain Issue

[Avik004]

I have a battery drain issue with my HP Pavilion laptop. The battery discharges when the laptop is in shutdown mode. To give you some perspective, it drains around 20% charge when the laptop is shutdown for 5 days. I had raised a support case on 31st but till now there is no resolution provided by HP support. I was really disappointed by the technical expertise of the support team. They kept asking me for logs (IDR), diagnostic test result screenshot, etc and after 15 days when I called for an update, they asked me to clarify what the problem was!! Its insane that I had to repeat what issue I am facing after 15 days of providing all the information they asked for. Can someone please let me know how to escalate this issue?

[Huffer]

4% per day is not excessive. Be sure the laptop is in actual shutdown as Windows 10 wants to put it in hybrid sleep mode. 

We actually do see a few complaints about battery drain in a shut down state and there really does not appear to be a good answer. 

[Avik004]

Thanks for the reply. However I don't agree 4% battery drain per day is normal. I have a dell and Lenovo laptop which are 5 and 2 years old respectively and costs almost half of my pavilion cs2082 tx but do not have this issue. Once when the laptop battery was charged 54% and I kept it in shutdown mode (not sleep mode) for 15 days and then tried turning it on, I found the battery was completely dead. I really don't think this is normal as no other laptop I've used has this issue.

[Huffer]

I did not say it was normal I said it was not excessive. HP denies the problem exists and has no solution to give you I am afraid. 

Do these older laptops have internal non-customer removeable batteries? If not the comparison is apples to oranges. Not the same. 

[Avik004]

I use a ThinkPad T470 laptop which has two batteries, one internal (non-removable) and one external (removable), however it does not have this issue. Could you please provide any reason why laptops that have internal non-customer removeable batteries would have this issue? Thanks for your help so far.

[Huffer]

Because they have no CMOS battery. The main battery is also used to keep the RTC running. I am a Lenovo user myself and I hate to say it but Thinkpads just seem to have the battery thing figured out a little better than HP. I do get a very minor amount of drain on my 7th gen Carbon X1....more like 1% every 24 hours. Don't leave it with any usb devices plugged in when it is off, as your laptop may have sleep and charge enabled where even when it is apparently off some power is supplied to usb ports for charging a phone, etc. and if you even plug a mouse in it will send power to the mouse. 

https://lifehacker.com/shutting-down-windows-10-doesnt-actually-shut-down-wind-1825532376

See above and try going to a true shutdown state and see if the drain is reduced.