Sounds like a fun challenge, but remember a microchip alone can’t store the energy – you’ll need a thin LiPo or a stack of micro‑supercaps and a tight buck‑boost chain. If you can squeeze a 2S pack into that chip housing, a 19V regulator will give the laptop the power it needs. Just make sure you don’t let it over‑voltage the laptop, and maybe add a little diode‑shielding to keep things tidy. Let's get it built before it turns into a half‑finished doodle.