Pentax 645N Operation Manual - Page 13

• This camera requires battery power for operation. Always use six 1.5V AA size batteries. • The ISO film speed and number of exposed frames are unchanged even if the batteries are replaced. =EMI • Keep spare batteries on hand for replacement convenience when shooting out doors or while traveling. 03 Using the optional Remote Battery Pack 645 and Power Cord 645 are recommended when the camera is cn C) used under the extremely low temperatures. • Replace all the batteries at the same time. Do not mix battery brands, types or an old batteries with new m 0 m one. • Remove batteries when not using the camera for long periods of time. The batteries tend to leak if left too long in the camera. Battery Life Battery Life z 3r3n33 [20°C/68°F] [-10°C/14°F] 120 film holder: 220 film holder: Bulb exposure time Alkaline Battery about 130 rolls about 100 rolls about 8 hours Lithium Battery about 320 rolls about 250 rolls about 12 hours 120 film holder: Alkaline Battery Lithium Battery about 7 rolls about 120 rolls 0 220 film holder: about 5 rolls about 9 rolls Bulb exposure time about 6 hours about 10 hours • The batteries were used under Pentax testing conditions. Actual battery life and performance may vary drastically depending on external conditions such as temperature and freshness of the battery. • Battery performance may be temporarily hindered in low temperatures, but should recover in normal tem- peratures.