Notes: 1. Only one tester can be connected to the App at a time. 2. Once the Bluetooth is connected, the Test Button on the battery tester will become unavailable. Battery Test WARNING: Before the test, the engine and all other accessory loads must be off to ensure accurate results. The battery testing function only applies to 12V lead-acid batteries. 1) Select Battery Test . Figure 5.4.1 2) Select a battery parameter (CCA or Ah), enter the value, and tap Next . The specific battery standard is normally listed on the battery label. 3) Tap Test . EN I 15