Zte R236 User Manual page 24

Charging the battery
Your phone is powered by a rechargeable battery. For maximum battery
performance, it is recommended that you first use up the battery power
and then charge it completely. A new battery's full performance is achieved
only after three complete charge and discharge cycles.
1. Connect your travel adapter to the left side of your mobile phone as
shown in the diagram.
2. Connect the other end of the travel adapter to the mains socket.
3. When the battery is being charged, the display will show the animation of
a battery being filled up.
4. When the battery is fully charged, disconnect the charger.
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