Best Jump Starter for Electric Cars: 5 Picks for a Dead 12V
Five 12V jump starters for electric cars and their auxiliary batteries, compared by peak amps, engine range, inflator, protections and warranty.
Diagnostics and Electrical
OBD2 scanners, multimeters, battery chargers and maintainers, and jump starters. Guides compare functions, vehicle coverage, update terms, charge rates and supported battery types.
Size it before you buy it
Our garage calculators work out compressor CFM, lift ceiling height and heater BTU, and every guide lists the specs that decide fit: capacity, height range, voltage and warranty.
Clamp Meter vs Multimeter: Which One Should You Buy?
A clamp meter reads current around a live conductor; a multimeter probes voltage, resistance and continuity with leads. Three examples compared.
Best Automotive Smoke Machine for Vacuum Leaks: 4 Picks
Four automotive smoke machines compared by pressure control, EVAP safety, smoke output and warranty.
Best Battery Charger for Semi Trucks (2026): 5 Compared
Five battery chargers compared by amps, voltage, engine-start power and warranty for semi truck battery banks.
Best Jump Starter for RV (2026): 5 Picks Compared
Five jump starters compared on peak amps, engine ratings, inflators, weight and warranty, scored for RV engines and campsite emergencies.
Best Brake Fluid Tester Under $20 (2026)
Five brake fluid moisture pens compared by stated accuracy, display, battery life and DOT coverage.
Best Jump Starter for First Car (2026): 5 Compared
Five jump starters for a first car compared by peak amps, engine ratings, battery capacity, protections and warranty terms.
Test Light vs Multimeter: Which One Should You Buy?
When a test light beats a multimeter and vice versa, how to read a test light listing, and four test lights ranked by range,…
Best Timing Light for Beginners (2026)
Four timing lights for 12V gasoline engines compared: battery clamps, self-powered and rechargeable options, xenon and LED strobes, with a digital 5-in-1 pick.
Best Bidirectional Scan Tool for Mechanics (2026): 5 Shop Picks
Five bidirectional scan tools for shop-level diagnostics, compared by bidirectional control, reset services, vehicle coverage, software updates and stated warranty terms.