T-Mobile has Mophie’s iPhone 6/s Juice Pack Air for $99.99, but coupon code ACCSAVE25 drops your final price down to just $74.99 with free shipping. Available in Black, Gold, or White. That’s a savings of $25 and only $5 more than the best we’ve seen. What’s more, it’s the lowest current price we could find. Nearly 200 Amazon reviewers rate it 3.9 out of 5 stars.

There’s been a lot of talk about iPhone battery cases since Apple surprised everyone with its first charging case. Apple’s 1,877mAh iPhone 6s Smart Battery Case comes in at $99 and sports a controversial “hump” design. Conversely, Mophie’s Juice Pack Air has a more universally appealing tapered design and more powerful 2,750mAh battery capacity. Even at full price, Mophie is generally considered the smarter choice, but at a 25% discount, it’s really a no-brainer.

Looking for a low-cost option? Anker makes a great MFi iPhone 6/s Battery Case for $40. expand full story