The iPhone will typically go around 3 days between battery charges. This time may go up or down depending on how much you use your iPhone.
Heavy users may have to recharge every day.
You'll need a power adapter to charge your iPhone away from your computer. Normally this is done via USB but you're not always going to be around your computer.
It's a good idea to buy one or two chargers to keep you running.
Car chargers are also available. Have a browse of car chargers below...
Red USB 5200mAh External Power Bank Charger with Flashlight for iPhone 4 4S PA7
Blue USB 5200mAh External Power Bank Charger w Flashlight for iPhone 4 4S PA7
10400mAh 2 USB Power Bank External Battery Charger For iPhone 5 5S 5C Cell Phone
Vehicle Charger for iphone ipad and ipod 5
US External USB 5600mAh Battery Charger Power Bank For iPhone Samsung WHT FF9
Anker Astro Mini 3000mAh Ultra Compact Portable Cell Charger iPhone Samsung BLUE
11200mAh USB Power Bank External Battery Charger for Mobile Phone PSP DV iPhone
Non slip Wireless Qi Power Charger Charging Pad Mat for iPhone 4S iPhone 5
Power Bank External Battery Charger for iPhone Samsung HTC NIKIA LOT10 WHOLESALE
IGO TP06133 0001 iPhone iPod Charger Tip IGOTA133 2 Item Bundle
EasyAcc 25 Watts 5V 5AWall Charger Multi Port USB Charger for iPhone 4S 5S
Compact 50000mAh 2 USB Power Bank External Battery charger For iPhone Samsung
2 BELKIN OEM NEW BLACK 8 Pin Lightning USB Sync Charger Cables USA iPhone 5 5S C
iPhone iPod BLK Chrome Keychain Charger Certified to Meet APPLE Standards
11x USB AC Power Adapter Wall Charger Plug FOR iPhone 3G 4 4G 4S 5 5C 5S iPod
Naztech Phantom 1000mAh Charger for iPhone3G4G iPod