Don't confuse the DC coupler for battery I guess the reason for using a DC coupler in same slot as the battery pack is to save space, although it would be more convenient to have it built-in to the camera so I don't need to take out the battery when connecting it to AC. Other than that ...

Canon ACK-900 AC Adapter for Powershot SD100, SD110, SD550 & SD500 Buy this product from Amazon
 
3
Format : CD
Publisher : Canon Cameras US
Company : Canon
List Price: $70.00
Our Price: $20.95
You Save: $49.05 (71%)
Used Price : $44.99


Features
  • Save on battery power when downloading images to your PC
  • Kit contains DC coupler, power adapter, power cord, and battery pack NB-3L
  • Compatible with Canon Powershot SD100 and SD110 models

Product Description

Main Features

  • Manufacturer: Canon
  • Manufacturer Part Number: 8455A001
  • Manufacturer Website Address: www.canonusa.com
  • Product Type: AC Adapter
  • Input Voltage: 100 V AC to 240 V AC
  • Compatibility:

    Canon Digital Cameras:

  • Ixus II
  • PowerShot SD 100
  • PowerShot SD 110
  • SimilarProduct

    Customer reviews

    Don't confuse the DC coupler for battery 5 by .. Debbie L (Mission Viejo, CA United States)
    I guess the reason for using a DC coupler in same slot as the battery pack is to save space, although it would be more convenient to have it built-in to the camera so I don't need to take out the battery when connecting it to AC. Other than that the AC adapter kit works great for me. I just followed the instructions on Using an AC Adapter Kit in the appendices of my SD100 user guide.

    Battery does not function on its own. 1 by .. Just Smogs, Inc. (Fountain Valley, Ca United States)
    I bought this item thinking that I could use the included battery. Unfortunately the battery only functions when connected to the adapter. What's the point of that?