Scosche has launched a new iPhone 4 case with a built-in backup battery, the switchBACK surge g4. The case -- which also features a kickstand for video -- incorporates a 1800mAh lithium-ion supply. It can charge a depleted iPhone up to 80 percent power, and provide an additional 275 hours of standby, 12 hours of talk time, 36 hours of audio, 9 hours of Wi-Fi or 9 hours of video. The company has also launched a free companion iPhone app, which gives users a detailed gauge of usage times remaining. Four blue LED lights on the case indicate battery life; charging is don
