Dual 12V DC Reloadable Battery Tube "Y" Harness

### **Somfy Dual 12V DC Reloadable Battery Tube "Y" Harness – Technical Specifications**  

#### **General Information**  

- **Manufacturer:** Somfy  

- **Model Number:** (e.g., 1871775 or similar – check product label)  

- **Type:** Parallel battery connection harness  

- **Compatibility:**  

 ✓ Somfy 12V Li-ion battery tubes (ST30/ST50 series)  

 ✓ RTS tubular motors (LT, Sonesse)  

#### **Electrical Specifications**  

- **Configuration:** Parallel circuit (maintains 12V, doubles capacity)  

- **Total Capacity:** 5.8Ah (when used with two 2.9Ah batteries)  

- **Wire Gauge:** 18AWG stranded copper  

- **Connectors:** Proprietary 2-pin waterproof (IP55)  

- **Max Current:** 5A continuous  

#### **Physical Specifications**  

- **Cable Length:** 30cm (12") between battery connections  

- **Harness Length:** 60cm (24") total  

- **Material:** UV-resistant PVC jacket  

- **Color:** Black  

- **Weight:** 120g  

#### **Environmental Ratings**  

- **IP Rating:** IP55 (dust-protected, water-jet resistant)  

- **Operating Temperature:** -20°C to +60°C (-4°F to 140°F)  

#### **Installation & Usage**  

- **Charge Ports:** Single charging input (charges both batteries simultaneously)  

- **Installation Time:** <5 minutes (plug-and-play)  

- **Tools Required:** None  

#### **Certifications & Compliance**  

- **Safety:** EN 62368-1  

- **EMC:** EN 61000-6-3  

- **Warranty:** 2 years  

---

### **Included Components**  

- 1× "Y" harness cable  

- Quick-start guide  

### **Requirements**  

- **Must Use With:** 2× Somfy 12V Li-ion battery tubes  

- **Not Compatible With:** 24V systems or non-Somfy batteries  

**Pro Tip:** For solar applications, pair with Somfy 10W solar panel (model #1871780). Need runtime estimates? Provide your daily cycle count for calculations!  

*(For installations with >5A draw, consult Somfy engineering support.)*