Description
The SLD Tech ST-125Q-24Y is a 125-watt, 24-volt monocrystalline solar panel designed to provide constant pressure on power delivery for medium to high-power off-grid applications where reliable 24V performance, fast battery charging, and professional-grade construction are essential. Featuring 64 high-efficiency monocrystalline silicon solar cells arranged in a 4×16 configuration, the ST-125Q-24Y achieves a module efficiency of 22.0% — the highest efficiency in the SLD Tech lineup — ensuring maximum power generation from every square inch. With an exceptional positive power tolerance of 0 to +5W, every panel is guaranteed to produce at least 125W and may deliver up to 130W under standard test conditions.
Key Features:
- 125W High-Power Output for 24V Systems — Ideal for commercial trucks, marine vessels, and industrial applications
- Exceptional +5W Power Tolerance — Guaranteed minimum 125W output, may produce up to 130W (better than standard +3%)
- Industry-Leading 22.0% Efficiency — Highest efficiency monocrystalline panel in the SLD Tech lineup
- 64-Cell TRUE 24V Design — Optimized voltage (36.88V Vmp) for efficient 24V battery charging
- Extended Warranties — 10-year workmanship / 25-year linear power warranty
- High Current Output (3.39A) — Fast battery charging for 24V systems up to 200Ah capacity
- Moderate Weight (16.04 lb) — Professional installation without heavy equipment
The 35.83" × 27.76" × 1.38" form factor and moderate 16.04 lb weight make the ST-125Q-24Y ideal for applications requiring substantial 24V power output: battery charging systems for commercial trucks and heavy equipment; marine house bank charging for larger boats and yachts; industrial control systems and telecommunications; backup power for remote monitoring stations; solar-powered water pumping; and off-grid 24V power systems.
Its nominal 24V DC output (36.88V Vmp, 43.27V Voc) is optimized for charging 24V battery banks with standard PWM or MPPT charge controllers, and the 3.39A current output enables reliable charging even during challenging weather conditions.
Built for durability in harsh outdoor environments, the ST-125Q-24Y combines a heavy-duty anodized aluminum frame with high-transparency, low-iron tempered glass to deliver long-term reliability in extreme conditions. The panel is engineered to withstand wind loads up to 2400 Pa (negative) and snow loads up to 5400 Pa (positive), and is tested for salt mist corrosion resistance (IEC 61701) — making it suitable for marine, coastal, and high-altitude installations where environmental exposure is severe.
Advanced cell technology and qualified materials provide high resistance to Potential Induced Degradation (PID), ensuring the panel maintains its performance over decades even in high-voltage systems (rated to 1000V DC). The ST-125Q-24Y's outstanding low-light performance ensures continuous energy production during early morning, late afternoon, overcast conditions, and partially shaded scenarios.
Key Specifications:
| Specification | Details |
|---|---|
| Model Number | ST-125Q-24Y |
| Manufacturer | SLD Tech (formerly Solarland) |
| Cell Type | Monocrystalline silicon |
| Number of Cells | 64 cells (4×16 configuration) |
| Maximum Power (Pmax) | 125W |
| Module Efficiency | 22.0% |
| Voltage at Pmax (Vmp) | 36.88V |
| Current at Pmax (Imp) | 3.39A |
| Open-Circuit Voltage (Voc) | 43.27V |
| Short-Circuit Current (Isc) | 3.62A |
| Nominal System Voltage | 24V DC |
| Power Tolerance | 0 to +5W (positive only) |
| Operating Temperature | -40°C to 85°C (-40°F to 185°F) |
| Maximum System Voltage | 1000V DC |
| Temperature Coefficient (Voc) | -(80±10) mV/°C |
| Temperature Coefficient (Isc) | (0.065±0.015) %/°C |
| Temperature Coefficient (Pmax) | -(0.5±0.05) %/°C |
| NOCT | 47±2°C (at Air 20°C, Sun 0.8kW/m², wind 1m/s) |
| Wind Load (negative) | 2400 Pa |
| Snow Load (positive) | 5400 Pa |
| Module Dimensions | 35.83" × 27.76" × 1.38" (910mm × 705mm × 35mm) |
| Weight | 16.04 lb (7.27 kg) |
| Frame Material | Heavy-duty anodized aluminum |
| Glass | High-transparency, low-iron tempered glass |
| Junction Box | Weather-sealed with bypass diodes |
| Carton Dimensions | 37.6" × 29.53" × 2.76" (955mm × 750mm × 70mm) |
| Packing | 1 unit per carton |
| PID Resistance | High (advanced cell technology) |
| Salt Mist Resistance | IEC 61701 certified |
| Product Workmanship Warranty | 10 years |
| Power Output Warranty | 25 years (linear: 97% @ 5yr, 90% @ 10yr, 80.68% @ 25yr) |
| Typical Applications | 24V battery charging, commercial trucks, heavy equipment, marine systems, industrial controllers, telecommunications backup, remote monitoring, water pumping, off-grid 24V power systems |
Specs & Info
