Capacitor on Bluetooth board

I've got an old radio enclosure that I put a new speaker in and am putting Bluetooth board.

I didn't have any mono Bluetooth boards, so I gutted a cheapo speaker I had to steal the board. I want to run it from the USB charger circuit.

I don't want to mess with a battery inside but will if I need to.

It runs fine from usb until it gets to bass and it will reset the board.

My thought was put a capacitor across the battery pads. Would that work?

I've got everything from smt to bigger electrolytic and in various voltages and farads. I was just going to put the highest farads and call it good.

I thought I'd ask if this was worth trying before I went digging through the garage to find all my spare parts..