Works perfectly. Printer works but needs paper. I just took pics if I needed documentation. I will be listing other tools. I've been doing a lot on another platform because it's local and cheaper. Make an offer. Here's the AI description: This Midtronics MDX-257 Battery Conductance and Electrical System Tester is a reliable tool for testing various types of batteries, including Flooded, AGM, and Gel. It comes with clamps and has the ability to detect bad cells, making it a valuable accessory for any car or truck. The LCD display provides easy-to-read results, and it is a single item that can be used for multiple vehicles. This tester is designed for 12V batteries and has no warranty.