Canon EOS 250D Advanced User's Manual page 36

Tips for Using the Battery and Charger
Upon purchase, the battery is not fully charged.
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Charge the battery before use.
Recharge the battery on the day before or on the day it is to be
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used.
Even during storage, a charged battery will gradually drain and lose its
capacity.
After recharging the battery, detach it and disconnect the charger
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from the power outlet.
When not using the camera, remove the battery.
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If the battery is left in the camera for a prolonged period, a small
amount of power current will keep being released, resulting in excess
discharge and shorter battery life. Store the battery with the protective
cover (provided) attached. Storing the battery when it is fully charged
may lower the battery performance.
The battery charger can also be used in foreign countries.
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The battery charger is compatible with a 100 V AC to 240 V AC 50/60
Hz power source. If necessary, attach a commercially-available plug
adapter for the respective country or region. Do not attach any portable
voltage transformer to the battery charger. Doing so may damage the
battery charger.
If the battery becomes exhausted quickly even after having been
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fully charged, the battery has reached the end of its service life.
Check the battery's recharge performance (= 460) and purchase a
new battery.
After disconnecting the charger's power plug, do not touch the prongs for
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approx. 5 sec.
Do not charge any battery other than a Battery Pack LP-E17.
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Battery Pack LP-E17 is dedicated to Canon products only. Using it with an
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incompatible battery charger or product may result in malfunction or accidents
for which Canon cannot be held liable.
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