The integrated LCD provides quick diagnostics without needing the mobile app. It’s your real‑time window into the battery’s health.

• Main Screen: Shows Pack Voltage, Current (Amps), and SOC %.
• Cell Detail Page: Displays all 16 individual cell voltages.
• Tip: Watch the Delta (Δ) value — a healthy AmpBox (280–314Ah) typically stays below 0.030V at rest.
• Status Icons: Indicates whether CHG or DSG MOSFETs are active.

The AmpBox uses RJ45 ports for data communication — but these are not Ethernet ports. They carry CAN/RS485 signals only.

• CAN Port: Used for closed‑loop communication with inverters such as Victron, EG4, Sol‑Ark, Deye. Sends real‑time cell data for optimized charging.
• RS485‑1 & RS485‑2:
  • Parallel Linking: Connects multiple AmpBoxes together.
  • PC Link: Works with a JK‑USB adapter for firmware updates via PC software.

The DIP switches assign a unique address to each AmpBox in a multi‑battery system.

• Single Battery: All switches OFF.
• Master Battery: Switch 1 ON.
• Slave Batteries: Each must have a unique binary address.

• Wake Up: Hold for ~3 seconds to exit shipping/sleep mode.
• Power Off: Hold for 5–8 seconds for long‑term shutdown.
• Hard Reset: A quick tap or timed hold (varies by firmware) can reboot the BMS logic.

• Blue/Green (Solid or Flashing): Normal operation. Number of LEDs = SOC level.
• Solid Red: System fault — check the LCD for error codes (e.g., Overvoltage, OTP).

This DC‑rated breaker protects both the JK‑PB2A16S and your cells from external shorts. The BMS has electronic protection, but this breaker is your primary manual disconnect and secondary failsafe.