Thankfully it is a great deal cheaper than a Juice Pack. A Juice Pack goes for just under $100, but this new one is retailing for $25.19.
New iPhone Case with Rechargable Battery
New and more affordable protective case with a built in high capacity li-ion battery for portable recharging is on the go. It doesn’t have quite the chic look of a Mophie Juice Pack, but it is a nice alternative. Ufortonunately the case is only for 1st Gen iPhones and the iPod Touch, not for 3G.