This is a battery tester user manual
This manual provides instructions for operating the GxT 40 and 42HD battery testers. It details measurement ranges, safety precautions, and procedures for testing 12- and 24-volt systems. The 42HD is designed for 24-volt systems and includes features like load testing, ripple detection, and safety indicators. Safety guidelines cover handling batteries, ventilation, and electrical hazards. The manual also includes warranty information and technical support contact details.
| Measurement Range - Battery Volts (Ferret 40) | 4.0 to 19.99 |
|---|---|
| Amps (Inductive) - Ferret 40 | 0 to +/- 199.9 |
| Load (15 Seconds On, 60 Off) - Ferret 40 | 500 Amps |
A good battery must maintain an output of 9.6 volts or more during the loading period.
You should crank the engine for 15 seconds while noting the cranking amperage.