To charge batteries you need a charger that is often sold together with two to four batteries, so if you bought the kit, half the problem is already solved. If the charger, then they will have to acquire.
If you decided on buying the charger at the same time, check your existing batteries – not all can charge. On rechargeable batteries Rechargeable will necessarily be written and large numbers indicated their capacity: 800, 1200, 1600, 2200, 2600 etc. If your batteries such signs there, and a voltage of 1.2 V and 1.5 V – be sure to charge those batteries is impossible.
After the batteries and charger ready insert the battery into the device, strictly observing polarity. Look for signs of the plus and minus buttons and insert the batteries accordingly. As a rule, to insert the battery in the charger need to bend the "tongue", which will hold the battery by means of a spring.
Making sure the battery is securely in the charger, insert it into the socket. On most chargers the LEDs at this point, turn to red, which means the beginning of the charging process.
All batteries can one find information about how many hours to charge these batteries. For batteries of different capacity, charging time can vary from 12 to 24 h or more. In addition, some of the charger signals completion of the charging process a sound signal or a change in the color indicator from red to green.