Maintenance Tools Reviews

Looking for the best torque wrench for lug nuts? We compare 1/2-inch click and digital wrenches for cars, trucks and EVs, plus a torque chart and tightening pattern.

Keep a stored car, motorcycle or boat battery healthy all winter. We compare the best battery maintainers and trickle chargers from NOCO, CTEK and Battery Tender, with sizing tips and a storage checklist.

Compare the best 12V battery testers for cars: check CCA, state of health and alternator output, with a voltage chart and how to test a battery at home.

The best portable jump starters for small gas cars, SUVs and trucks compared. How many amps you really need, lithium vs lead-acid, and a safe step-by-step jump starting guide.

The best OBD2 scanners for older cars and Android or iPhone users: handheld code readers and Bluetooth adapters compared, with tips on reading check engine codes.

We compared 7 adjustable, water pump and groove joint pliers from KNIPEX, CRAFTSMAN, IRWIN, Klein and more on jaw capacity, adjustment and value.