Canon PowerShot SX400 IS Black Manual (en)

Charge the battery pack.
CB-2LF: Flip out the plug (1) and 
plug the charger into a power 
outlet (2).
CB-2LFE: Plug the power cord 
into the charger, then plug the 
other end into a power outlet.
The charging lamp turns orange, 
and charging begins.
When charging is finished, the 
lamp turns green.
Remove the battery pack.
After unplugging the battery 
charger, remove the battery pack 
by pushing it in (1) and up (2).
To protect the battery pack and keep it in optimal condition, do not 
charge it continuously for more than 24 hours.
For battery chargers that use a power cord, do not attach 
the charger or cord to other objects. Doing so could result in 
malfunction or damage to the product.