A 9V battery shouldn't break it, but again I'd feel safer recommending it if I had some current and voltage measurements, or at least knew in what arrangement the insides of the bar are wired, or what the original resistors are.
OS: Windows 10 64 bit Professional
CPU: AMD Ryzen 5900X
RAM: 16GB
GPU: Radeon Vega 56
CPU: AMD Ryzen 5900X
RAM: 16GB
GPU: Radeon Vega 56
