As one of its daily deals, All4Cellular offers the 1900mAh Extended Battery Case for iPhone 4 / 4S in seven colors, together with a screen protector, for $14.99 with free shipping. That's $24 under our mention from two weeks ago of a 2400mAh battery case without a screen protector and the lowest total price we could find for such a 1900mAh battery case and screen protector by $10. This case features a hard shell, battery status light, on-off push-button toggle, and ability to charge your phone while also being charged. Deal ends today.