LifeProof has just announced LIFEACTÍV Power Pack 20, an update to last year’s original LIFEACTÍV that doubles the capacity to allow it to fully charge a laptop or serve as the sole power source for a smartphone on a weekend excursion, while also being rugged enough to take on outdoor adventures. Packed with dual 10,000 mAh batteries for a 74 Wh capacity as well as a USB-C Power Delivery port for maximum charging speed, Power Pack 20 is also…