Battery Degradtion : Surface Pro (5 , 2017) (I5, 256 gb)

Hello,

I just wonder if some of you who own this version of Surface Pro have the same issues like mine as in below:

ISSUE: Battery at full charge drastically degraded and swingsConditions observed lately:-The battery runs out within 1-2 hrs just by browsing websites/Youtube (tested on both Chrome&M. Edge)

-To fully Charge, takes only around 20-30mins (Est. full charge not accurate)

-Battery sometimes drops by a ridiculous amount E.G. by 20-30% in 1 sec.After checked with Battert Report run in CMDAt Designed Cap at : 45,000,

My Full Charge history as below (Noted that i tried to reset the windows and all previous history is gone so this is what i remember)

First bought (Jan,2018)

Full Charge 2018                                 : around 40,000 0 44,000 

Full Charge 2019(Early months)          : Starting to drop to 35,000

Full Chrage as of the last few months : 25,000

Full charge as the last few days of notice: Swings from 22,000 to 9,000 life cycles at 383 

Now i cant use it outside without charger. This is very frustating while working**.**

As my device is out of warranty, after searching online, the onl way is replacement at 500USD which seems ridiculus to me just because of battery. I bought this expensive device for the reason of long-term use. this is just a year and a half. Shouldn't it last for 4-5 years for its price?

If you have the same issues and any solutions/suggestions, feel free to share and discuss.

**Update 1 8/19/19:**I can't turn on. I lost my files those i didn't back up. I don't have any other computer to use.

Update 2 8/22/19: I just bought a new PC just to work. I cant wait for 1-2 weeks (Send to another country as  there's no microsoft HQ in Thailand) and spend 500USD for just battery replacement.

I kinda gave up and thought it was my fault back then. Now, if you have the same problems. Please up vote.

Update 3 9/1/19:

Seems like my battery is completely dead after testing at a computer shop.

Conclusion:

I am not a hardcore user. In less than 400 cycles, battery (all 4 cells) is dead.

The battery life of my surface pro lasted less than 2 years.

That means you have to pay 500 USD every 2 years. (Could have used this money to upgrade lol)

Maybe 2 in 1 tablets/laptops are not ready for practical use.

Maybe other brands are geting better.

Why do we have to refurbish/replace the device for just a battery which shouldn't cost more than 50 USD.

P.S.

For those who cant even turn the device on,

It's either the circuit is broken duee to defect/unfunctional battary 

OR

The battery is completely dead

Worst case = both.