[A320FL] Battery drain while Off

[Foo Bar]

My, 2 years old, A3 2017 is suffering from battery drain

My A3 suddently started to suffer from batttery drain while in standby : phone remains midly hot, but CPU Spy report 60%+ in Deep Spleed
Just discovered battery drain also occurs while phone OFF
I've charded my phone to 100% while off then unplug it and wait 10-12hours: battery was only 40%

What could cause battery drain while phone Off ?
Not sure replacing the battery will solve such problem...

 

[5K0RVP4]

In my opinion, the battery is definitely the problem itself and you should look forward to replacing it.

 

[moozer]

In my opinion, the battery is definitely the problem itself and you should look forward to replacing it.

Agreed.

Where have you been hiding bro?

 

[Foo Bar]

In my opinion, the battery is definitely the problem itself and you should look forward to replacing it.

Agreed.

Ok, thanks for your answers
I will try to find some small shop to have the battery replaced .... replacing battery in A3 is not same game as changing it in Galaxy S4 mini

 

[SnowFuhrer]

Ok, thanks for your answers
I will try to find some small shop to have the battery replaced .... replacing battery in A3 is not same game as changing it in Galaxy S4 mini

Yeh lol. The s4 also isn't as dust and water resistant.

 

[Foo Bar]

In my opinion, the battery is definitely the problem itself and you should look forward to replacing it.

Agreed.
Where have you been hiding bro?

Had battery replaced by a Pro ; no change, my A3 still suffering battery drain when phone off.
New battery ordered, but I'm skeptical it'll will solve my problem.

Meanwhile anybody else had faced that problem ?
Any new idea other than buying a new phone ?