The 3.6 V / 1250 mAh battery lasts for pure photography, that is, no video clips, no flash used, few zooms, no WiFi operation, for about 350 shots. Because I let run along permanently also operate on GPS in my TZ41, I expect about 100 shots per battery charge less. Therefore, I have risen from the outset 2 additional batteries, which I then insets cyclically when the just used battery is empty and the second in the meantime, the charger is. But in general I have to say that, the battery for all the functions offered by the TZ41 now is significantly undersized, especially since some functions, such as the GPS operation consume electricity even when switched camera condition.