Bluetooth module HC05 not working with battery but works when plugged into com

Hi all, I am doing a project on the arduino nano which sends data to a android device using the HC05 bluetooth module. The bluetooth module works when plugged directly into my laptop but doesnt work when a battery is used. I'm using the Limskey 7.4v 1500mah lipo battery.

Also additional information: One of my LEDs works fine when connected to said battery, but when plugged directly into the laptop, it doens't work. Thanks for your help and please understand that I'm new to arduino and circuits in general.

Hello, sweehng!
To begin with, at least show the wiring diagram. How is power supplied to the Bluetooth module?