We have introduced many nice backup batteries for mobile devices. But if you also want to access your files in USB drive or memory card on your iPhone, iStorageshould be more suitable for you.
The iStorage is a multi functionalthat measures approx 72 x 72 x 17mm and weights 92g. As we can see from the images, the features an ultra portable design, and comes a built-in 2000mAh rechargeable battery in order to feed your iPhone, iPod touch or other mobile devices out of juice.
Besides that, the versatile backup battery also feature built-in WiFi connection, using the integrated USB port and SD(HC), you can conveniently insert your USB flash drive, external hard disk driver or memory card, then you can use your iPhone or iPad to browse your files in the external storage in a wireless way. Apart from that, the backup battery works as a via connecting it with USB Ethernet adapter or wireless network adapter.
iStorage multi functional backup battery is priced at $88 USD. If you’re interested, jump to Brando online store for more details.