With how powerful our smartphones have become these days one of the constants that still remains quite common is the lack of a long lasting battery in many modern smartphones. While not all devices are like this, if you're a power user it can be hard to find one that lasts all day and then some. This is where battery packs come in handy as they can provide much more extended battery life beyond the normal constraints of what your device allows.
This battery pack from Poweradd for example, has a 20,000mAh capacity so you can be sure that you'll have plenty of juice to keep you going for days even after the first time charge. The pack also features dual USB ports so you can charge two devices at once if you need to, and thanks to the smart charging technology built into it the pack can detect the maximum amount of power your phone or other mobile device's battery can accept to make sure it charges as fast as possible. The pack itself can recharge fast as well, and with a 2amp charger plugged into it you can charge the Poweradd Pilot X7 in about 10 hours. It's also relatively thin so it shouldn't take up much space in a bag or a pocket. Right now this is on sale for $29.99 down from the original cost of $75.99, but if you use coupon code QTZW2KMW at checkout the price comes down to $21.99.