All manufacturers are hastily releasing AMD versions of pretty much all their new models. And the Aspire 5 (A515-44G) is no different.

1. Remove the bottom plate

So, you have 11 Phillips-head screws that you need to undo. After you do so, pry the bottom panel away with a plastic tool. Pretty standard.

2. Battery

Interestingly the 48Wh battery is held in place by… nothing. Just a simple tape.
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https://laptopmedia.com/highlights/inside-acer-aspire-5-a515-44g-disassembly-and-upgrade-options/