I have been having issues with the kool energy inverter. The first 1 I got would loose battery % over time (I didn’t even have it for a month) so I took it back to be replaced. They then gave me another one (which wasn’t in a box) which has another issue where if something is plugged (eg router) into the DC output it will randomly beep 3 times and the router will turn off then on again. I then unplugged the router and put it in the AC output (which doesn’t get affected) but the inverter still randomly beeps 3 times, no matter if the DC switch is on or off. It varies and beeps either every few minutes to every few hours.
I don’t know what to do