Best cheap Battery Tester SinoTrack TK100-BL

Looking for a Car battery tester and this one works, best part price is $23 (or less 8/22/2023). it works with 12v or 24v batteries, and various types Standard, AGM, EFB, and GEL batteries. This unit seems like a great add to the home/ DIY tool box. FYI at most auto parts stores they will check the battery for free. Below is the link to the product if interested, I am not supported by the link, Amazon, or the Vendor. Just a product that works.