PowerTrack 500

Device identification

• Device name: PowerTrack 500 (Powered by Shelly)

• Device model: S4PB-00C0187105

• Device SSID: PowerTrack500-XXXXXXXXXXX

• BLE Model ID: 0x1125

Short description

PowerTrack 500 is a battery monitoring device designed to track a single battery or complete battery strings across common pack configurations (from 6–48 V nominal systems). It measures up to 500 A DC and calculates State of Charge and State of Health for supported chemistries including Lead-Acid, SLA/VRLA, and LiFePO4—making it suitable for everything from backup banks to off-grid installations.

Beyond core electrical measurements, it adds practical safety and diagnostics tools: a built-in temperature sensor for shunt overheating detection plus four combined auxiliary inputs for additional voltage and temperature measurements. With Wi-Fi communication and platform-friendly connectivity, it’s built to feed battery data into automations, dashboards, and alerts.

Main features

• Monitors single battery or battery strings (4×12 V, 3×12 V, 2×12 V, 1×12 V, or 1×48 V packs)

• State of Charge (SoC) and State of Health (SoH) for Lead‑Acid, SLA, VRLA, and LiFePO4 batteries

• DC current measurement up to 500 A

• Nominal battery pack voltage support: 6 – 48 V⎓

• Wide power supply range (P+ terminal): 6 – 70 V⎓

• 4 combined auxiliary voltage/temperature measurement inputs

• RS485 Modbus (non-isolated) interface with optional power back-up

• Built-in temperature sensor for shunt overheating detection

Use cases

• Off-grid solar battery bank supervision and alerts: Use the 500 A direct current measurement together with SoC to understand real charging performance and overnight consumption. Send low-SoC warnings or abnormal current events to your automation platform via MQTT or HTTP/HTTPS webhooks to prompt corrective action.

• Remote site backup battery monitoring over Modbus: Connect PowerTrack 500 to an existing RS485 Modbus monitoring stack to pull pack voltage, current, and health indicators into a central dashboard. When SoH drops or charging behavior changes, automate maintenance tickets or escalation messages through your monitoring system.

• RV or boat battery protection with temperature-aware safety: Use the built-in shunt overheating detection plus auxiliary temperature inputs to watch for rising temperatures during heavy loads or charging. When temperature thresholds are reached, trigger an automation notification (via MQTT/webhooks) so you can reduce load or adjust charging behavior.

• Battery room visibility with expanded sensing points: Use the four auxiliary voltage/temperature inputs to monitor additional points such as separate battery segments or ambient temperature alongside the main pack measurements. Combine those readings with SoC/SoH data to automate “battery room abnormal condition” alerts when temperature and electrical behavior drift outside expected ranges.

Main applications

• Photovoltaic battery systems

• Recreational vehicles

• Marine energy management

• Off-grid systems

Integrations

Simplified internal schematics

Device electrical interfaces

• Shunt I/O terminals

• Power supply voltage (6 - 70 V⎓)

• OneWire interface for external optional temperature sensor (DS18B20)

Connectivity and protocols

• Wi-Fi

• Bluetooth

Safety function

• Overheating protection

• Overvoltage protection

• Overcurrent protection

Supported load types

Any load types are supported.

User interface

Inputs

• System button

  • Press and hold for 5 seconds to enable Device access point and Bluetooth connection.

  • Press and hold for 10 seconds to factory reset the Device.

Outputs

• LED (monocolor) indication

  • AP (Access Point) enabled and Wi-Fi disabled:
    1 second ON / 1 second OFF

  • Wi-Fi enabled, but not connected to a Wi-Fi network:
    1 second ON / 3 seconds OFF

  • Connected to a Wi-Fi network:
    Constantly ON

  • Cloud is enabled, but not connected:
    1 second ON /5 seconds OFF

  • Connected to Shelly Cloud:
    Constantly ON

  • OTA (Over the Air Update):
    ½ sec ON / ½ second OFF

  • Button pressed and held for 5 seconds:
    ½ second ON / ½ second OFF

  • Button pressed and held for 10 seconds:
    ¼ second ON / ¼ second OFF

The list above starts with the initial device status and the lowest priority. Every next state cancels the previous one.

Specifications

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Basic wiring diagrams

• Conceptual conncetion

• Single battery monitoring

• Battery string monitoring - 2 batteries

• Battery string monitoring - 3 batteries

• Battery string monitoring - 4 batteries

Legend

Components and APIs

• This device

• All Shelly devices and services

Compliance

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Printed user guide

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