12 volt coffee makers is the any good reason to own one?

Wow, I thought I was buying the only bad ones made. it's good to know that everyone has that problem. I'm so glad I just bought another one!, I also have a combo kit where the invertor matches the 120 volt coffee maker and it seems to work ok. I am keeping a separate spare 12 volt new battery that I never used as the battery I run my power tongue jack and 120 volt invertor for coffee, small tv while parked. I have a trickle charger that I'll use while it's connected to shore power.