Portable chargers on sale this weekend for 25% off

There's nothing worse than a dead or dying battery when you're miles away from the nearest power outlet. (Well, almost nothing.)
At best, it's a minor inconvenience, but at worst, a zapped battery can put you in danger. That's where a portable charger or wireless battery pack can come in handy. Lucky for you, the following three models are currently on sale for 25% off:
TYLT portable 7x smart charger
TYLT's 7x Smart Charger does double duty as both a compact, portable battery pack and a wall cha