How do I stop the annoying music from playing when the batteries are charged in my Nexcell charger?

How do I stop the annoying music from playing when the batteries are charged in my Nexcell charger?

When the charger is plugged in it will go through a test cycle and the music will play.... Push either button as the music plays to disable the music function.

Aren't the 1 hour Rapid chargers on the market now better than the slower 3 hour chargers?

Not necessarily. The best chargers on the market will balance speed with gentleness and completeness of charge. Speed is an important feature but the faster the charge rate the more internal wear on the battery which will shorten the battery's ultimate life. The ideal battery charger will charge fast but also provide a relatively gentle charge rate and a smart chip to protect the batteries from overcharge/overheat damage and at the same time provide a complete charge to maximize run times between charges.