Power your Pentax K1000 with a single 1.55V SR44 silver oxide battery, ensuring reliable light meter operation and accurate exposure readings. Modern alkaline LR44 batteries work as drop-in replacements but may require more frequent changes due to their different voltage characteristics. For optimal film camera maintenance, store your K1000 with the battery removed when not in use for extended periods, preventing corrosion and extending battery compartment life. The K1000’s mechanical shutter operates …