Canon EOS 400D Digital Instruction Manual page 25

Tips for Using the Battery and Charger
Recharge the battery on the day before or on the day it is to be used.
An unused charged battery will still gradually lose its power over time. The time required
to recharge the battery depends on the ambient temperature and battery's power level.
Do not recharge the battery for longer than 24 hours
degrading the battery performance).
After recharging the battery, detach it and unplug the charger
from the power outlet.
You can attach the cover in a different
orientation to indicate whether the battery
has been recharged or not.
If the battery has been recharged, attach the cover so that
the battery-shaped hole <
on the battery. If the battery is exhausted, attach the cover in the opposite orientation.
Use the battery in an ambient temperature range of 0°C - 40°C / 32°F - 104°F.
To attain best battery performance, an ambient temperature of 10°C - 30°C /
50°F - 86°F is recommended. In cold locations such as snowy areas, battery
performance and operation time may temporarily decrease.
When not using the camera, remove the battery.
If the battery is left in the camera for a prolonged period, a small amount of power current is
released, resulting in excess discharge and shorter battery life. Store the battery with the cover
attached. Storing the battery after it is fully charged can lower the battery's performance.
The battery charger can also be used in foreign countries.
The battery charger is compatible with a 100 V AC to 240 V AC 50/60 Hz
power source. If the shape of the prongs is different, purchase a plug adapter
for that country. Do not attach any voltage transformer to the battery charger.
Doing so can damage the battery charger.
If the battery becomes exhausted quickly even after being fully
charged, replace the battery.
Replace the battery with a new one.
Do not use the battery charger to recharge any battery other than Battery Pack NB-2LH.
Battery Pack NB-2LH is dedicated to Canon only. Using it with a non-
Canon battery charger or product may result in malfunction or accidents
for which Canon cannot be held liable.
> is aligned over the blue seal
Recharging the Battery
(to avoid
25