Appendix M Batteries
Practically every modern camera relies on some form of battery to power its auto exposure or focus systems, film wind-on, flash, or digital capture and processing systems. When a camera fails to operate, or functions in a sluggish way, the cause can almost always be pinned down to exhausted battery condition or poor contacts. You should always keep your batteries well charged and where ever possible always carry a backup set.
In general, remember that batteries are affected by temperature. Low temperatures slow down their chemical reaction, resulting in erratic or sluggish camera operation. Make sure batteries are inserted with the polarity (+ or –) marked on their contacts matching the terminals in your equipment.
Safety ...
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