While there are plenty of portable battery charger solution, here is another emergency battery charger which is also a cellphone strap.
Weight at only 17 grams, you can carry the full charged cellphone strap around and use it when needed. It takes about 3 hours to charge the battery in the cellphone strap. When connected to your phone, it will need about 40 minutes to fully transfer from the battery to the phone. You can also plug in the cellphone strap charger connector to your phone and talk at the same time, just like the AC adapter. According to the company, the cellphone strap is able to give you 30 minutes continuous talk time, and up to 12 hours standby time. 2/28/2007 7:17:46 AM ---