Replacement Battery for Harman Kardon Onyx Wireless Speaker System PR-633496(2500mAh)

Fits perfectly into HK Onyx. Make sure your unit takes the long rectangular battery though as some take a round battery. installation was fairly painless.

I bought this battery for my harman kardon onyx bluetooth speaker, and all i got to say is dont buy this product. It doesn’t hold the charge.It took 5 hours to reach a full charge. After that i removed the charger And i had to leave home for 1 day. And when i came back i tried to turn on the speaker but it was dead.First i was confused and thought maybe i did something wrong. So i charged it again and i left the speaker off for a whole day just to see if it will hold on the charge.and again the speaker was dead when i tried to turn it on at the end of the day.Such a waste of money for this low quality battery.

Esta batería no aguanta la carga. Si no la usas en 1 día de descarga sola.Si pudiera no colocar ninguna estrella lo haría

Charged to full and holds charge good. Time will tell if it’s good or not but 13 bucks is no brainer.