This Apple iPhone 7 Smart Battery Case drops from $99.99 to $79.99 to $59.99 when you apply our exclusive code BRDAPP20 in your cart at TechRabbit. Plus, the shipping is free. This is the lowest price we could find for one of these cases by $27. These cases have a soft-touch silicone shell that protects against drops and scratches and the built-in battery can add around 22 hours of usage to your iPhone. Sales tax is charged in most states.