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Somfy 9020672 13.3V 650mA DC Power Supply for Somfy WireFree V1 Li-ion Motor Systems
The Somfy 9020672 is a precision-engineered 13.3V DC, 650mA charger designed specifically for 12V Li-ion Somfy WireFree V1 motor batteries. Employing a 2-stage Constant Current/Constant Voltage (CC/CV) algorithm, it ensures optimal charge efficiency and extended battery lifespan. Integrated over-voltage, under-voltage, over-current, and short-circuit protections guarantee exceptional reliability and safeguard connected power systems.
Quick Answer
The Somfy 9020672 provides precise 13.3V DC 650mA power delivery with a specialized CC/CV algorithm, ensuring optimized longevity and safety for Somfy WireFree V1 Li-ion battery packs.
✓Optimized CC/CV Charging Protocol for 12V Li-ion
✓Comprehensive Electrical Safeguards: OVP, UVP, OCP, SCP
✓Universal AC Input (100-240V) with Flame-Retardant Enclosure
✓Compact & Lightweight Design (113g) for Portable Use
If you own Somfy WireFree V1 motorized blinds, the 9020672 is your essential charging solution. This compact white brick delivers a precise 13.3V output at 650mA, specifically engineered for the proprietary V1 2-pin connector. It’s perfect for users needing a reliable OEM replacement or a dedicated charger to keep lithium-ion shade batteries topped up. Avoid this if you have newer V2 motors or generic 12V devices, as the connector and voltage are specialized. Its 71-inch cable provides decent reach for high-mounted roller shades.
✓ Who Should Buy
- •Owners of Somfy WireFree V1 motorized window blinds, shades, or roller shutters requiring a compatible and certified charger.
- •Installers and technical service providers who need a reliable and safe charging solution for Somfy WireFree V1 Li-ion power systems.
- •Users seeking a compact, reliable, and safety-compliant 13.3V DC 650mA charger specifically for 12V Li-ion applications with proprietary 2-pin connectors.
✕ Who Should Avoid
- •Individuals requiring a charger for typical e-bikes (e.g., 24V, 36V, 48V+ systems with significantly higher amperage) as this unit's specifications are not compatible.
- •Users needing advanced smart charging features such as Bluetooth/Wi-Fi connectivity, mobile app control, data logging, or charge scheduling.
- •Anyone without a Somfy WireFree V1 Li-ion battery or devices with non-proprietary charging ports, due to its specific voltage, current, and connector type.
Product Overview
The Somfy 9020672 is a dedicated power supply unit engineered for the meticulous charging requirements of 12V Li-ion batteries powering Somfy WireFree V1 motorized window blinds, shades, and roller shutters. Categorized as an 'E-Bike Charger' within general product classifications, its specific electrical output of 13.3V DC at 650mA (8.6W) precisely targets the 12V nominal Li-ion chemistry used in these specialized motor systems. This compact, plug-in brick charger accepts a global input voltage range of 100-240V AC at 50/60 Hz, ensuring broad compatibility across various international electrical grids. Its sophisticated 2-stage Constant Current/Constant Voltage (CC/CV) charging algorithm is paramount for the health and longevity of Li-ion cells, preventing overcharging and maximizing cycle life. The charger features a proprietary 2-pin connector, ensuring secure and dedicated integration with Somfy WireFree V1 power systems. Encased in a flame-retardant plastic body, measuring 60.9mm x 94mm and weighing a mere 113g, the Somfy 9020672 is designed for both portability and safety. Safety compliance is robust, attested by CE, ETL, FCC, and RoHS certifications, highlighting its adherence to international electrical and environmental standards.
| Brand | Somfy |
| Model Number | 9020672 |
| Type | E-Bike Charger |
| Application Sector | Motorized Window Blinds / Shades / Roller Shutters (V1 WireFree Motors) |
| Country Of Origin | France (Designed) / China (Manufactured) |
| Launch Year | NA |
| Color | White |
| Enclosure Type | Compact Plug-in Brick |
| Standard Compliance | CE, ETL, FCC, RoHS |
| Certifications | CE, ETL, FCC, RoHS |
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Engineering Analysis
The Somfy 9020672 operates on a robust switch-mode power supply architecture, converting a universal AC input (100V-240V, 50/60Hz) to a precisely regulated 13.3V DC output at 650mA. This specific output is critical for 12V nominal Li-ion battery packs, aligning with the typical charging voltage requirements for a 3-cell series (3S) Li-ion configuration (where 4.2V/cell * 3 cells = 12.6V, with 13.3V providing a slight buffer for efficient full charge and internal resistance losses). The implementation of a 2-stage Constant Current (CC) / Constant Voltage (CV) charging algorithm is fundamental for Li-ion battery integrity. During the CC phase, the charger delivers a constant 650mA current until the battery voltage reaches approximately 13.3V. Subsequently, it transitions to the CV phase, maintaining 13.3V while gradually reducing current flow as the battery approaches its full 100% State of Charge (SOC) over an estimated ~8-hour period from a fully drained state. This controlled charging profile minimizes stress on the battery cells, mitigating risks of overcharge degradation and maximizing overall cycle life.
Thermal Management: Despite lacking active cooling, the Somfy 9020672 utilizes a passive (fan-less) cooling method. Given its low rated power output of 8.6W and compact form factor, the thermal load generated during operation is efficiently dissipated through its flame-retardant plastic enclosure. The absence of active cooling components contributes to its silent operation and enhanced long-term reliability by eliminating potential mechanical failure points. The choice of flame-retardant material for the enclosure further reinforces its safety profile, designed to contain any potential thermal events within the device.
Integrated Protection Features: A comprehensive suite of protection mechanisms is embedded to safeguard both the charger and the connected battery system. This includes:
* Over Voltage Protection (OVP): Prevents the output voltage from exceeding safe limits, protecting the Li-ion battery from catastrophic damage due to excessive voltage.
* Under Voltage Protection (UVP): Ensures stable operation by cutting off power if input voltage drops below a critical threshold.
* Over Current Protection (OCP): Limits the output current to 650mA, preventing damage to the battery and internal circuitry during abnormal load conditions.
* Short Circuit Protection (SCP): Immediately ceases power delivery upon detecting a short circuit at the output, preventing overheating, fire hazards, and component damage.
These robust features, combined with inherent electrical isolation and adherence to CE, ETL, FCC, RoHS compliance, establish the Somfy 9020672 as a highly reliable and safe charging solution for its intended application.
Technical Support & FAQs
Engineering Analysis
The Somfy 9020672 operates on a robust switch-mode power supply architecture, converting a universal AC input (100V-240V, 50/60Hz) to a precisely regulated 13.3V DC output at 650mA. This specific output is critical for 12V nominal Li-ion battery packs, aligning with the typical charging voltage requirements for a 3-cell series (3S) Li-ion configuration (where 4.2V/cell * 3 cells = 12.6V, with 13.3V providing a slight buffer for efficient full charge and internal resistance losses). The implementation of a 2-stage Constant Current (CC) / Constant Voltage (CV) charging algorithm is fundamental for Li-ion battery integrity. During the CC phase, the charger delivers a constant 650mA current until the battery voltage reaches approximately 13.3V. Subsequently, it transitions to the CV phase, maintaining 13.3V while gradually reducing current flow as the battery approaches its full 100% State of Charge (SOC) over an estimated ~8-hour period from a fully drained state. This controlled charging profile minimizes stress on the battery cells, mitigating risks of overcharge degradation and maximizing overall cycle life.
Thermal Management: Despite lacking active cooling, the Somfy 9020672 utilizes a passive (fan-less) cooling method. Given its low rated power output of 8.6W and compact form factor, the thermal load generated during operation is efficiently dissipated through its flame-retardant plastic enclosure. The absence of active cooling components contributes to its silent operation and enhanced long-term reliability by eliminating potential mechanical failure points. The choice of flame-retardant material for the enclosure further reinforces its safety profile, designed to contain any potential thermal events within the device.
Integrated Protection Features: A comprehensive suite of protection mechanisms is embedded to safeguard both the charger and the connected battery system. This includes:
* Over Voltage Protection (OVP): Prevents the output voltage from exceeding safe limits, protecting the Li-ion battery from catastrophic damage due to excessive voltage.
* Under Voltage Protection (UVP): Ensures stable operation by cutting off power if input voltage drops below a critical threshold.
* Over Current Protection (OCP): Limits the output current to 650mA, preventing damage to the battery and internal circuitry during abnormal load conditions.
* Short Circuit Protection (SCP): Immediately ceases power delivery upon detecting a short circuit at the output, preventing overheating, fire hazards, and component damage.
These robust features, combined with inherent electrical isolation and adherence to CE, ETL, FCC, RoHS compliance, establish the Somfy 9020672 as a highly reliable and safe charging solution for its intended application.