To enter the Ship Mode state, connect the equipment as follows:

• Power Supply PS #1: VIN of the BQ25186EVM at 0V, OFF, or disconnected
• Power Supply PS #2: VBAT of the BQ25186EVM at 3.7V
• Scope Channel SC #1: VIN at TP5
• Scope Channel SC #2: VBAT at TP8
• Scope Channel SC #3: VSYS at TP6
• Scope Channel SC #4: TS/MR at TP11

Turn ON power supply #2. Enter Ship Mode by setting the EN_RST_SHIP bits in the SHIP_RST register (0x09) to 2b10. Users are in Ship Mode when the voltage on SYS (SC #3) falls to 0V and the voltage on TS/MR (SC #4) still periodically pulses to monitor button press.

Figure 3-6 SHIP_RST Register: Enabling Ship Mode

Alternatively, Ship Mode can be entered through a long button press. Turn ON power supply #2. With VSYS active (not in Ship Mode or Shutdown Mode), make sure that the PB_LPRESS_ACTION bits are set to 2b10: Enable shipmode. After holding the button SW1 for longer than MR_LPRESS (default: 2b01 (10s), the voltage on SYS (SC #3) falls to 0V.

Figure 3-7 SHIP_RST Register: Long Press Action to Enable Ship Mode

To exit Ship Mode, hold the TS/MR button SW1 until VSYS enables. Turning on VIN at 5V also exits Ship Mode.