Definitely worth buying, trustworthy traditional battery load tester. Great design, easy to hold, use, and a smart thermo dissipating design. OTC is quality tools.
Works as advertised, price reasonable. Saved me from having to carry my boat batteries to get tested. One showed 12.5 volts but couldn’t maintain it under a load.
I like this tester a lot due to its 130 Amp testing load. Most testers are 100 Amp. Price was right. Only drawback I can see is that it is Made in China.