This is an excellent device. I have four cars that I constantly have to maintain. Two of mine and two belong to my wife and kids lol. It's nice to have this little tester handy so I can check the batteries (if I remember, of course) and see if the time I need a replacement is getting closer. We all know how annoying it can be going to the grocery store, going to work, or even waking up in a place you need to be to find your car won't start due to a dead battery. The device is easy to use and very simple. forward as you can see in the photos I have attached. I like that it allows me to rule out a batter before moving on to another diagnosis. It's a hassle to take out the battery, take it to test, only to find out it's not a problem. I would say it's worth it for the time savings.
Precision Bike Torque Wrench Set for Mountain & Road Bikes - Pro Bike Tool 1/4-Inch Drive with Allen & Torx Sockets, Extension Bar, Dual Readout, and Storage Box
11 Review
Autoscanner for car diagnostics Rokodil ScanX Pro, OBD2 scanner
29 Review
Autel AP200H OBD2 Scanner Dongle - Wireless Bluetooth Code Reader with Health Status Reports - Diagnostic Tool for Engine, Transmission, ABS, SRS - OLS/BMS Resets - All Vehicles (Android/iOS)
11 Review
eTORK 3/8-Inch Drive "Click Style" Electronic Torque Wrench: Precise Torque Control (25-250 In. lbs., 2-20 ft.-lb.)
12 Review