A few months ago i spilled water on my laptop due to which it got short circuited. I gave to dell showroom. They repaired it. But I found that my battery is not charging although the AC adapter is working. I inserted my battery in another laptop and the battery was charged. I checked the system setup and it says that it is a non dell battery. I am not able to understand how did it happen since this is the battery which I was using from the start. Moreover in the battery health meter, it displays that charging is disabled and I cannot find any option to enable it. I have been to many repair shops and when I explain the matter they just say that leave the laptop for 6 days and we will replace your motherboard without even taking a look at the laptop. I cannot trust these suggestions. 

Please tell me what to do.