External battery packs are nice to have lying around. They're one type of product where even if you already have one, it's good to have another. Who's going to complain about having too much backup power available?
So here's a cheap way to take your current number of battery packs and increase it by one. The HooToo Prism power bank is available on Amazon for $24, but with the use of coupon code E74NXWUD, you can strike that down in half. $12 for 12000mAh? Not bad at all.
The HooToo Prism comes with two USB ports (5V/1A and 5V/1-2.4A) and an LED flashlight. The latter could come in handy during a power outage, not unlike the rest of the battery. The white option is currently unavailable, but you can still pick one up in black. Hit up the link below if you want Amazon to ship one your way.