Spigen inc. via Amazon offers the Spigen iPhone 6/s 3,100mAh Volt Pack battery case for $35.99, but when you use the coupon code 28FAEX3B the price drops to $14.99 Prime shipped. That’s $21 off the regular sale price and the lowest we’ve seen for it. This battery case protects and charges your iPhone 6/s, plus it has LED lights that show how much power remains. Amazon shoppers gave it 4.4/5 stars.
The Volt Pack battery case takes convenience to another level, combining portable power and protection. Its slim and simple design maintains a secure fit that’s lightweight yet packed with 1.5 times the power of your iPhone. Extra features such as LED indicators and interchangeable frames only better an already amazing mobile necessity.