arduinoPi:
I have a computer monitor and a laptop with a charger connected to teh same lead acid battery. The monitor is glitching heavily though making noises through the speakers and not turning on. I unplug the VGA cable and that fixed it. How can I stop a VGA cable from causing interference with everything.
If I get you right, You use dc-ac inverter to supply power for monitor and laptop. First you should test monitor and laptop and VGA cable at AC circuit, and if no problem then it is EMI (Electromagnetic interference ) from inverter.
You need upgrade your inverter to pure sine wave inverter.
Wagan EL2200 Elite 180 Watt Pure Sine Wave Inverter ( select watt model meet your requirement)