Home camera battery PENTAX Optio S40 batteries Compatible Camera Battery for PENTAX Optio S40 Click to enlarge Find other parts of your PENTAX Optio S40 Optio S40 camera battery 1100mAh 3V 28.58AUD Code:3 Special price: $AUD Number: Brand new product with 1 year warranty! This Optio S40 batteries replaces: This Optio S40 batteries is compatible with the following models: