Review on 🔋 12V Lead Acid Battery Capacity Tester LCD Meter - Blue with SMAKN Acid Battery Indicator by Tommy Rao

Bought because I wanted to use it for my car. Run a 14 gauge positive and negative wire through my firewall to the battery. worked then when i tried to start the car it sounded like a fuse had blown but it wasn't like i had no battery power to the fuse box at all until i could figure out what to do with it. There's a button that changes the readings from percentages to volts, but the button is on the back of the board, so that's a big disadvantage if you're planning on installing this thing somewhere where the nice bright blue light is less as is i expected