AC Adapter Kit ACK800 for the Powershot
Compatable with:
A2000 IS, A1000 IS, E1, SX110 IS, SX100 IS, A720 IS, A710 IS, A700, A590, A580, A570 IS, A560, A550, A540, A530, A520, A510, A470, A460, A430, A420, A410, A400, A310, A300, A200, A100
This Adapter is necessary when one desires to use the camera indoors for an extended period of time without using battery power.