I got this for my iPhone 4 and found it to boost a charge by about 50% over 2 hours. During that time, I was using the iPhone to browse web pages over WiFi. The battery is light and compact. Since you can connect any USB cable to it, it works with a wide variety of devices. I no longer have to carry several different backup batteries which lightens my load on trips.
great and useful device BUT i was charged 2 shipping charges when my those two little itty bitty batteries was shipped in the SAME BOX! Also, shipping to Hawaii cost the same as shipping to anywhere else in the USA! we are NOT a foreign country. sorry, that's been my vent for all online purchases -- that's why i don't do it more often but know that this battery was worth it!
The DURACELL Instant Power Charger is a small, portable battery which provides convenient power for USB-compatible devices. It utilizes state of the art Lithium Ion battery technology and can be recharged up to 600 times from a laptop or any other USB power source. The Power Charger simultaneously powers and charges most cell phones, smart phones, PDAs, iPhones, iPods, MP3 players, Bluetooth headsets and other portable electronic devices.
The Instant Power Charger can power and charge all USB enabled devices from major manufacturers such as Apple, Motorola, Palm, Blackberry, Sony, Samsung and others.
The Instant Power Charger replaces a tangle of bulky batteries and adapters with one sleek, lightweight charger. You rely on so many different electronic devices; this easy-to-use charger powers them all! Duracell’s renowned quality and a three year warranty ensure the Instant Power Charger’s enduring dependability. You can feel confident that the Instant Power Charger will be your ultimate all-in-one power solution for years to come.
Portable, long lasting battery power for all USB-compatible devices such as iPods, iPhones, cellular phones, PDA’s, Bluetooth headsets and others. No more carrying bulky adapters, one charger does it all! / Adds up to 35 hours of run time to iPods/MP3 players, 5 hours of talk time to cell phones and 4 hours of talk time to iPhones/smart phones/PDA’s. / The Instant Power Charger can be charged up to 600 times using a laptop or any other USB power source and can recharge your USB-compatible device up to three times on a single charge. / Includes a USB to mini-USB charging cable compatible with most Motorola and Blackberry phones and works with all USB cables (like the ones included with the iPod or iPhone). / Sleek and light – weighs less than five ounces and easily fits in your purse or pocket.