Review on CTEK (40-149) CTX Battery Sense - Smart Battery Monitoring via Mobile Phone by Francisco Garcia

The product is excellent and the manufacturer CTEK is very quick to respond to questions via email. I work from home so I rarely drive my car long distances, mostly short trips of 5 or 10 minutes, to go to the gym or to eat. This is bad for a car battery and I bought this battery along with a CTEK MUS 4.3 charger to make sure my car batteries don't run out. A few things to know: 1. In most American cars, the size of the battery post nut is 6mm. 6mm nuts are also listed as "M6" in places like Lowes. You should purchase a pair of these 6mm nuts so that you can attach the Battery Sense positive and negative terminals to the battery without removing the loose nuts on the battery terminals. With additional 6mm nuts, you can simply unbolt them for extra bolt length and "sandwich" the Battery Sense connector with a post.2. The CTEK battery terminal displays voltage and temperature. However, they are not enabled by default, you need to go to settings and enable these ads. They are shown when you click on the battery and view the details. A small quirk: when you install an app, it asks for a device ID, which is part of the alphanumeric label displayed on the device itself. If you try to enter the entire ID listed on the device label, it will not work. You only have to enter part of it. Why would they do such a thing, I can't.