Today in iLounge Deals we’re offering up the ChugPlug Portable Macbook Power Pack for only $29.99 — 76% off the normal price. This external battery pack connects onto the end of your MacBook power adapter and gives you up to four hours of additional battery life with no extra cables required. It can charge both your MacBook Air and 13” MacBook Pro, and its sleek design fits right in with the Apple aesthetic. Get the ChugPlug Portable…