Anker 3350mAh Battery Pack + Lightning Cable | $18 | Amazon | Promo code ANKERBB4
Photo: Anker

Anker makes great, giant battery packs. You probably own one! But it’s also worth keeping a pocket-friendly pack for those days where you need some extra juice, but don’t want to carry a bag. This 3350mAh lipstick-style charger is down to $18 today with promo code ANKERBB4, and includesbonus Lightning and microUSB cables in the box.