Everywhere I check I see this https://www.amazon.com/Battpit-Notebook-Battery-Replacement-4400mAh/dp/B00E0GSBRE
It's usually just some slide latch so check your Asus user manual on how to unlatch.
I have an asus k53sm laptop, and i can't remove the hdd. It doesen't have a rack and it seems that its glued up

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