I'm building a portable bluetooth boombox. It's a very simple build. The components I'm using are:
- Bluetooth amplifier board (TDA7492P)
- 2x50W speakers
- Rechargeable battery
The amplifier needs to receive 12V. So the battery I will get will be able to deliver this voltage.
Now before I buy the battery I have 2 questions that come to my mind.
Will the voltage at the terminals of the Amp be 12V for the entire discharge of the battery or do I need some kind of a voltage regulator?
My other concern is the autonomy of the boombox. I want to be able to combine 2 batteries to double the battery life of the device.
Is there a way I can put together 2x12V batteries and obtain double the autonomy? But keep the voltage to 12V. Do I need to connect them in series or in parallel?
As you can guess i'm new to electronics, and any help would be very much appreciated.