NGM flip Guide Rapide page 26

Charging the battery: Charge the battery before starting to use
the device. Connect the charger to a wall socket and then plug the
jack into the charging base (wait a few moments until the red
charging led on the base lights up before inserting the phone) or
plug it directly into the micro USB port on the bottom part of the
phone. Wait a few seconds for the notification led on the phone
to start blinking in blue; when the charging base notification led
becomes green, the charging process is completed and the phone
can be disconnected from the base.
Warning: To preserve the functionality of the product and the
integrity of the warranty, we recommend the use of original NGM
chargers. Please charge the battery indoors, in a dry and favorable
environment. It is normal for the battery to get slightly warm
during the charging process. The battery will reach its full capacity
when cycled several times.
26 ENGLISH