This is battery has great use, I got one myself and I keep it in my car glove box and connect to my phone when battery runs below 50%. It also charges my gps, bluetooth headset, and psp for kids.

I don't have iphone but I use android, one thing I find common for all my android friends is that battery time is short, if we access 3G network from time to time, battery just burn so fast it can't even last for a day, if i sit in office whole day my xt720 got to 30% at the end of the day, my brothers i9000 at 20% when he finish work, and acer steam at 30%, so most smart phone battery won't last more than a day if u check email regularly, some web surfing or background application sync or update application (wifi off, full 3g access at all time, so my boss wont know i'm doing something fun while at work :p).

After all I think this battery really has some great use, for example my phone's battery is 1390mah this i5000 battery will give me approximately 250% full recharge (over 300% in theory but power is lost on the battery from time to time and discharging, so 250% is more practical).

I've also made a youtube video on how this battery work so everyone interesting would know how it work. [Click Here]

Cheers


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