Multi-Battery Charging & Monitoring Solution

LiFePO₄ & Li-Ion | Scalable | Off-Grid & Grid-Powered

Our Multi-Battery Charging & Monitoring Solution is an industrial platform designed for simultaneous charging, monitoring, and control of multiple LiFePO₄ and Li-Ion batteries from a single setup (1 to 50 batteries at a time), multiple setups could be chained without limits.

The solution is built on two proven industrial modules:

• PD.Charger (MPPT Solar / DC Smart Charger)

• PD.Screen_PRO (Industrial Smart Touch HMI MCU Computer)

Together, they form a scalable, API-controlled multi-battery charging system capable of managing 1 to 50+ batteries, with individual monitoring, safety control, remote connectivity and the status info logging to the onboard uSD-card to the web-server.

What Problem It Solves

Traditional multi-battery charging systems suffer from:

• limited scalability
• no remote monitoring of the charging process
• poor battery health visibility
• no logging to track the batteries during the test and operation
• complex custom firmware and UI development for such a custom systems
• high maintenance cost and long time-to-market

Our solution eliminates these issues by delivering a deterministic, embedded, industrial-grade charging platform that works reliably 24/7 in harsh environments.

System Architecture Overview

PD.Charger – Per-Battery Smart Charging Node

Each battery is managed by a dedicated PD.Charger module, ensuring:

• precise charge control

• independent protection

• accurate state-of-charge measurement

Supported battery types

• LiFePO₄

• Li-Ion

• Other chemistries by request

Key charging features

• Up to 10 A charge/load current per channel/charger

• Battery capacity support up to 500 Ah per module

• MPPT charging from solar panels

• Wide DC input (up to 50 V, custom designs – up to 120V)

• Automatic buck / boost / buck-boost operation

• Extremely low idle current (< 1 mA)

• Full I²C monitoring and control, all the chargers send data to PD.Screen_PRO

PD.Screen_PRO – Central Controller & HMI

PD.Screen_PRO acts as the central brain, communication gateway and user interface of the system with the next functions:

• collects real-time data from all PD.Charger modules (via I2C or RS-485)
• visualizes battery health, status, and alarms
• controls charging parameters per battery
• provides local and remote user interaction (web-interface)
• saves the datalogs per channel/per battery

Key advantages

• Instant boot (milliseconds)
• No OS, no filesystem, no SD-card failures
• Deterministic real-time behavior
• Industrial temperature range (-30 … +85 °C)
• Touch-based local control (7″ / 10.1″)

Scalable Multi-Battery Topology

• 1 to 50+ batteries per system
• Each battery has:
  • independent charger
  • independent protection
  • independent measurement
  • datalogging function to onboard uSD-card and to the web-server (LAN, WiFi)
• Daisy-chained via I²C / RS-485 / CAN
•  and web-interfaceCentralized monitoring and control via PD.Screen_PRO

This architecture ensures maximum safety, redundancy, and system uptime.

Advanced Battery Monitoring & Control

For each battery, the system provides:

• State of Charge (SoC)
• State of Health (SoH)
• Voltage (per pack and per cell)
• Charge / discharge current
• Temperature (battery + board)
• Charge cycle count
• Alarm & fault detection

Smart charging policies

• Configurable charge voltage and current
• Temperature-dependent charging limits
• Per-cell threshold control
• Automatic derating and protection

All parameters are accessible via a documented PD.Charger / PD.Charger_GSM API.