The SP250‑70 is a high-performance MPPT solar charge controller designed for 24 V or 48 V battery systems. It supports PV voltages up to 250 V and delivers up to 70 A charging current—ideal for mid-to-large off-grid or hybrid solar installations.

Key Features

• High MPPT Efficiency
  Achieves ≥ 99.9% MPPT tracking efficiency and an overall efficiency of ~98%, maximizing solar energy capture.

• Wide PV & Battery Range

  • Input Voltage (Voc): up to 250 V

  • MPPT Operating Range: ~65–245 V

  • Supports 12 V / 24 V / 36 V / 48 V battery systems (auto-select).

• Strong Power Capability

  • Max PV Short-Circuit Current: 80 A

  • Max Charging Power: ~5,400 W (48 V system)

  • Delivers up to 70 A charging current.

  • Advanced Charging Algorithm
    Features a multi-stage TBB Premium II charging routine, including bulk, absorption, float, and programmable equalization—compatible with lead-acid and lithium batteries.

• Parallel-Ready
  Supports up to 6 units in parallel for scalable system capacity

• Built-in Data Logging & Communications
  Logs 365 days of performance data (daily, monthly, total) and includes real-time monitoring via RS485/T-Bus, LCD display, Bluetooth, and a dry-contact relay.

• Durable Design
  Natural cooling (heatsink) supports full load up to 40 °C; rated IP21 (indoor) operating from −25 °C to +60 °C.

• Comprehensive Protections
  Built-in safeguards include over/under-voltage, overcurrent, short circuit, reverse polarity, and temperature protection.