OTC ROBINAIR BOSCH - ACH 3642 12V-36V Truck Circuit Tester

OTC ROBINAIR BOSCH - ACH 3642 12V-36V Truck Circuit Tester

The OTC Robinaire Bosch - ACH 3642 is a compact, purpose-built 12V-36V truck circuit tester engineered for technicians who maintain heavy vehicles and commercial fleets. Designed to integrate with standard automotive electrical system tools, this tester delivers reliable diagnostics across a wide range of truck, bus and commercial vehicle electrical systems. Its broad voltage range supports 12V and 24V systems plus higher-voltage diagnostics up to 36V for flexibility on modern trucks.

Battery Testers

This unit functions as a straightforward battery tester and circuit diagnostic tool. It checks continuity, verifies power and ground circuits, and helps identify shorts and open circuits quickly on vehicle wiring harnesses. Clear indicators and a rugged enclosure make it suitable for workshop environments where repeated daily use is expected. The tester is a practical addition to battery diagnostic tools used by fleet maintenance teams and independent repair shops.

Battery Chargers And Heavy Duty Battery Chargers

Although not a charger itself, the 3642 integrates into diagnostic workflows alongside battery chargers and heavy duty battery chargers. Use the tester to confirm battery condition and system voltage before and after charging, ensuring accurate charging cycles and avoiding overcharge or undercharge scenarios. Compatibility with both 12V and 24V charging systems supports professional charging workflows for light and heavy commercial vehicles.

Professional Automotive Electrical Tools

Built with professional automotive electrical tools in mind, the 3642 emphasizes durability, simple operation and clear feedback. The form factor fits toolbox layouts and service carts, while probe and connector options support common truck electrical interfaces. This tester complements multimeters and advanced diagnostic equipment by providing a fast, on-the-spot verification step during inspections and repairs.

In commercial settings where uptime matters, the OTC Robinaire Bosch - ACH 3642 offers practical, repeatable performance for battery diagnostic tasks and circuit verification across 12V-36V vehicle systems. Fast shipping.