Very few iPhone battery cases seem to offer removable batteries anymore, so Refuel Invictus for iPhone 6 ($100) certainly fills a void. Refuel Invictus (also referred to as Mojo Refuel Invictus) includes a thin 3200 mAh battery, which can be swapped out. iBattz sells a charger/power bank kit ($30) separately — it includes a battery and a charger for said battery. The case itself offers coverage for the sleep/wake button and volume controls, and comes in silver, space gray, or gold to match the color of an iPhone 6.{/exp:char_limit}