Cooler Master Power Fort 6600mAh Battery Pack $5 (Sold), Acer Ezdock Port Replicator for EX5630 $29 @ Umart

Seems like decent price.
Enjoy :)

$5 Cooler Master Power Fort 6600mAh Battery Pack

Power Nearly ANYTHING
The Power Fort 6600 mAh is a portable power pack with a large capacity, built-in lithium-polymer battery that has a power capacity of up to 6600mAh. That means you can charge nearly any of your portable electronic devices.

Charge 2 Devices at The Same Time
Two power outlets let you charge 2 devices at the same time. The DC 5V/2.1A output provides power for high power consuming Tablet PCs. The DC 5V/1A outlet charges most smart phones, PDA, GPS, Game systems, portable players, Bluetooth, and more.

Easy To Read Battery Power Indicator
LED status indicators with 4 blue lights let you know quickly how much power is remaining in the Power Fort.Long-lasting Battery with Over-Charging ProtectionA special circuit design ensures the Power Fort 6600 mAh a long life and prevents damage from over charging/over voltage.

Also,

$29 Acer eZDock port replicator for EX5630

The ezDock Port Replicator contains all the standard ports featured on the notebook. Attachable to the notebook through one single port, it provides one-step connection to many devices and peripherals, as well as eliminating tangled cables.

Product Features:

Suitable for TravelMate 3000, 4600, 8100, C310, Ferrari 4000
6 x USB 2.0 ports
1 x ExpressCard slot
1 x PC Card slot (one Type II)
1 x 6-pin bus-powered IEEE 1394 port
1 x 4-pin IEEE 1394 port
1 x DVI-D port
1 x S-video/TV-out (NTSC/PAL)
1 x External display (VGA)
1 x S/PDIF port
1 x Microphone/line-in jack
1 x Headphones/speaker/line-out port
1 x Ethernet (RJ-45) port
1 x Modem (RJ-11) port
1 x Keyboard PS2 port
1 x Mouse PS2 port
1 x Serial port
1 x Parallel port
1 x DC-in jack for AC adaptor
Includes 135W adaptor and power cable