DSTE 2x NB-6L Replacement Li-ion Battery for Canon SX170 SX500 S120 SD3500 SD4000 IS SX275 SX510 SX600 SX610 SX710 HS D10 D20 ELPH 500 HS Cameras as CB-2LY Battery Type : Li-ion Battery Capacity : 6.3Wh/1700mAh Output Voltage : DC 4.2V (max)/ DC 3.6V (mean) Info Function for Life Indication High Capacity for Stamina Full coded version, show battery level in camera screen. No memory effect, can be charged or dischargered at anytime. Perform as good or better than the top branded batteries on the market.