How to tell if someone changed my laptop battery?


Oct 31, 2013
I let a new friend borrow my laptop for a while and when I got it back, I've had problems of my battery draining faster than usual and a notification on the taskbar saying ''Consider changing your battery''.

My laptop is an Acer Aspire 5334. The battery currently looks like this...
Or atleast that is the placement of the white barcode. I will recheck after posting this topic to see how close the look is.

Is there a way I can find out if my battery is not one that comes with this laptop? Thanks!
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