Canon PowerShot A70 PowerShot A70/A60 Camera User Guide - Page 210

Problem Battery pack consumed quickly If using rechargeable batteries: Batteries do not charge. Cause Batteries are not the right type. The batteries are cold. Battery terminals are dirty. The batteries have not been used for over a year. If rechargeable batteries: The batteries have lost their effectiveness. Batteries were placed in the charger in the wrong direction. Solution Use only unused AAsize alkaline batteries or Canon AA-size NiMH batteries. (For information about alkaline batteries, see Proper Battery Handling (p. 21)) Battery performance deteriorates at low temperatures. If shooting in a cold area, keep the batteries warm (by placing them in an inner pocket, etc.) until ready to use them. Wipe them well with a dry cloth before use. If batteries are rechargeable: Performance should return to normal after several charging cycles. Discard all 4 batteries and replace with new ones. Put batteries back into the charger in the correct direction. 206