We’ve got everything we could possibly want on our smartphones these days, everything except good battery life, which makes accessories like battery packs a rather attractive buy. If you’ve been looking to extend the usage times on your Galaxy S4, then Xtorm’s Solar Power Pack could be the best and most, um, juicy battery pack you’ll get – it adds an additional 3,000mAh battery to your Galaxy S4, and this add-on battery is chargeable through a solar cell.
