10A 12V/24V PWM Solar Charge Controller with LCD & Dual USB – MZA10

Description

Key Specifications & Features

• Rated Current: 10 Amp (Max Solar Input & Load Output)

• System Voltage: 12V / 24V Auto-Detect ( Automatically detects battery voltage upon connection)

• Charge Technology: PWM (Pulse Width Modulation) 3-stage charging (Bulk, Boost, Float)

• Display & Control: Backlit LCD screen with dual tactile buttons for menu navigation and parameter adjustment

• USB Output: Dual 5V USB ports (typically up to 2.5A total max output) for direct mobile device charging

• Timer & Load Control: Configurable 24-hour load operating modes (e.g., Light Control, Dusk-to-Dawn, Manual ON/OFF, Timed Hours)

• Protection Features:

  • Battery Low-Voltage Disconnect (LVD) & Reconnect (LVR)

  • Over-current & Short-circuit protection

  • Reverse polarity protection (solar/battery)

  • Open-circuit protection

Max Solar Panel Input Capacities (10A Limit)

Essential Connection Order

⚠️ Important: To avoid damaging the controller or triggering error states, always connect components in this exact order:

1. Connect the Battery FIRST: Connect positive ($+$) and negative ($-$) terminals to the controller so the unit can boot up and auto-detect your 12V or 24V system voltage.

2. Connect the Solar Panel SECOND: Connect the solar panel leads to the controller’s PV terminals.

3. Connect the Load LAST (Optional): Attach any 12V/24V DC loads (such as lights or small DC fans) to the load terminals.

When disconnecting, reverse the order: Solar Panel first, then Load, then Battery.

Common Default Parameter Settings (12V Reference)

(Values automatically double for 24V systems)

• High Voltage Cut-off (Over-voltage): $\sim 14.4\text{V}$ (Sealed/Gel) / $14.6\text{V}$ (Flooded)

• Float Voltage: $13.7\text{V}$ (Adjustable)

• Low Voltage Disconnect (LVD): $10.7\text{V}$ (Adjustable)

• Low Voltage Reconnect (LVR): $12.6\text{V}$ (Adjustable)