Charging circuits with diodes

[chesterthompson]

Hi
I'm trying to build a simple portable speaker. The only power source I can find is an old drill and charger so I have decided to use that.
The specs of the drill power supply are 12.6v 0.5A, which then attaches to a Li-ion charging circuit.
From initial testing the amplifier circuit pulls around 0.6A, so I have bought a new power supply 12.6v 1A. But I would like to be able use the speaker while it is charging. I have designed this circuit would be great to get your opinion on if it would work! Basically threw a couple of diodes in.

I've attached a picture




Thanks Chester

 

[johnjoe]

Possible, if the voltage drop of the diodes is ok for your circuit.

 

[chesterthompson]

Hi
The voltage drop may trip the Low voltage cut off actually? Do you have any other ideas?

Thanks Chester