Insignia Mobile Battery Pack Only $4.99! (Was $14.99)

Are your phones and other mobile devices always running out of juice? Head over to Best Buy and pick up this Insignia mobile battery pack on clearance for only $4.99 right now, down from $14.99!

This battery pack has a 5200 mAh capacity and is suitable for most smartphones, tablets, e-readers and MP3 players. It also has some pretty good reviews and is rated 4.4/5 stars.