How to Change the tune of a Makita Battery Charger?

1. Remove and re-insert the battery within five seconds and the melody will change.
2. Every time you remove and re-insert the battery the melody will change, cycling through the pre-sets.
3. When the desired melody sound comes out, leave the battery cartridge inserted and charging will begin.
When a “short beep” mode is selected, no completed charging signals comes out. (Silent Mode)
4. When the battery has finished charging the green light will come on and the chosen melody will play. (In selected silent mode, no sounds come out.)
5. Pre-set melody sound remains stored even when the charger is unplugged.