Product Overview
The 1-10PCS MPPT Solar Charge Controller SD05CRMA is a compact, high‑efficiency module designed to power 18650 Li‑ion and LiPo batteries with precision. Ideal for portable solar setups, DIY projects, and off‑grid power solutions, this controller delivers up to 1 A of output at a regulated 3.7 V–4.2 V, ensuring safe and optimal battery charging from solar panels.
Key Features
- MPPT Technology: Maximizes solar energy harvest by adjusting the load to the panel’s peak power point.
- 1 A Current Output: Provides a steady, reliable charge for single 18650 cells or small battery packs.
- 3.7 V–4.2 V Regulation: Matches the exact voltage range of Li‑ion/LiPo cells for safe charging.
- Compact & Lightweight: 25 mm × 25 mm footprint, perfect for portable and space‑constrained designs.
- Built‑in Protection: Over‑current, over‑voltage, and reverse‑polarity protection safeguard both battery and panel.
- Easy Integration: Simple 3‑wire connection (positive, negative, ground) with clear labeling.
- High Efficiency: Up to 95% power conversion, reducing heat and increasing lifespan.
Technical Specifications
- Input Voltage: 3.3 V–6.6 V (solar panel)
- Output Current: 0.1 A–1 A (adjustable via potentiometer)
- Output Voltage: 3.7 V–4.2 V (settable)
- Maximum Power Point Tracking (MPPT) Range: 0.5 W–5 W
- Operating Temperature: –20 °C → +70 °C
- Dimensions: 25 mm × 25 mm × 5 mm
- Weight: 10 g per module
- Packaging: 1–10 units per order
Benefits
- Optimizes solar panel output, shortening charge times.
- Reduces battery wear with precise voltage control.
- Versatile for single cells or small packs—great for DIY electronics, RC projects, and emergency kits.
- Low power consumption keeps the system efficient even in low‑light conditions.
- Durable construction withstands outdoor use and frequent handling.
How to Use
Connect the solar panel to the controller’s input terminals, attach the 18650 battery to the output terminals, and adjust the potentiometer to set the desired output current. The controller will automatically track the panel’s peak power point, delivering a steady 3.7 V–4.2 V charge while protecting your battery from over‑charging and short circuits.
Why Choose Our MPPT Solar Charge Controller
Our SD05CRMA offers unmatched reliability, safety, and performance in a pocket‑sized package. Whether you’re building a portable charger, a solar‑powered gadget, or an off‑grid backup system, this controller delivers efficient, hassle‑free charging for Li‑ion and LiPo cells. Invest in a solution that maximizes solar energy and protects your valuable battery cells—choose the SD05CRMA MPPT Solar Charge Controller today.
Price: Original price was: $ 3.14.$ 1.57Current price is: $ 1.57.

