Canon EOS 50E - Manual (Page 7)

Lithium Battery
The camera operates on one 2CR5 iithium battery. Check the battery
ievei in the foiiowing cases;
1. After repiacing the battery.
2. After the camera has not been used for an extended period.
3. The shutter does not reiease.
4. The camera is being used in a low-temperature environment.
5. Also note the following:
• Before installing the battery, wipe the battery contacts to remove
fingerprints and dirt. This is to prevent faulty connections and
corrosion.
• Never disassemble or recharge the battery. Also, never store the
battery in high-temperature places or short circuit the battery
contacts or toss the battery into a fire.
• Although the battery works well under low temperatures, battery
performance may suffer slightly at freezing temperatures. In such a
case, keep a spare battery warm in a pocket, etc., and use and
warm the batteries alternately.
Low Battery Power
When only the cu symbol blinks on the LCD panel, a picture can still be
taken at the proper exposure. However, there may not be enough battery
power to advance and rewind the film automatically. Replace with a new
battery.
Lens
To avoid getting the lens surface and electronic contacts scratched,
attach the rear lens cap to the detached lens or always put down the lens
with the rear end up.
Handling Precautions