Introductions:
Are there bigger capacity iPhone batteries out there?
The lithium powered rechargeable battery extender for iPhone that has a whopping 4000mAh capacity. It will extend your talk time 10hrs, online time 10hrs and video playback time 50hrs (estimated). It is not bulky either as it just extends a little at the bottom, it would be great for flights or long car rides.
No more shutting down applications, fully utilize your iphone 3G, 3GS functions.

Features:
- Super Capacity - 4000mAh, make your iPhone as a whole day partner.
- LED indicators (see notes below)
- No bulky, it extends a little bit at the bottom
- A great assistant to boost your iPhone 3G / iPhone 3GS
- Protects your iPhone while extending your battery life
- Uses your own Apple cable (USB - Dock cable) to charge battery
- Black high-gloss finish (same material as your iPhone)

Options: Color
- Black
- White (out of stock)

Specifications:
- NET Weight: 3.6 oz (105g)
- Capacity: 4000 mAh
- Measures: 4.5” x 2.6” x 0.9” (11.5 cm x 6.6 cm x 2.4 cm)
- Measures: 6.3" long with iPhone attached
- Output voltage: DC 5.5V
- Output current: 500 mA

Estimated use time:
- Standby time: Up to 500 hours
- Talk time: Up to 10 hours
- Internet use: Up to 10 hours
- Wi-Fi: Up to 12 hours
- Audio play: Up to 50 hours
- Video play: Up to 14 hours

This accessory is suitable for:
- iPhone 3G
- iPhone 3G S

Package Contents:
- Super Chargers for iPhone 3G / iPhone 3Gs (iPa) x 1
- Instruction manual x 1

Packaging:
- Box

Note:
-  You may click here for all our chargers for iPhone / iPod.
- Top LED: Indicates charging status of iPhone. If red, charging is in process. If green, the iPhone is fully charged.
- Middle LED: If yellow when iPhone is connected, the backup battery needs to be recharged.
- Bottom LED: Indicates charging status of the backup battery. If red, battery is in the process of being charged. If green, backup battery is fully charged..

 Reviews: