Smart Load Balancing: Plan A & Plan B Overview
Plan A – Single Phase: Real-Time Current Monitoring
DLB (Dynamic Load Balancing) is an intelligent power management technology. It monitors the current of the household circuit in real time, uses the total current as the judgment basis, and automatically adjusts the charger's output power — effectively avoiding tripping, equipment damage, or safety hazards from overloading.
- Total Current (user input)
- Sets the maximum current capacity per phase (e.g. 80A) for the home circuit. Adjustable from 8A to 99A — exceeding this trips the circuit breaker.
- Charging Current
- The real-time current the charger is delivering to the vehicle.
- Home Appliance
- Total load of home appliances on the circuit, excluding the charging station.
- Standby Current
- = Total Current − Home Appliance − Charging Current. Available headroom on the circuit.
Plan A – Three Phase: Per-Phase Maximum Current Control
For three-phase installations, Plan A monitors the current of each phase in real time and uses the maximum phase current among L1, L2, and L3 as the control basis. The charger automatically adjusts output so that no single phase exceeds its safe carrying limit — preventing tripping or damage caused by any phase overloading.
- Monitors L1, L2, and L3 individually and responds to the highest-loaded phase.
- Automatically reduces EV charge current if any phase approaches its limit.
- Restores full charge rate as phase loads drop — no user action required.
- Compatible with standard three-phase home and light commercial installations.
Plan B – Three Phase Only: Total Sum Current Balancing
Plan B monitors the total combined current of all three phases (L1 + L2 + L3) simultaneously. It dynamically adjusts the EV charger's output to ensure maximum utilisation of available power without exceeding the configured household current limit.
- Household Current (user input)
- Total three-phase incoming current for household use. Adjustable from 8A to 999A according to your actual supply.
- Charging Current Sum
- Real-time combined charging current across all three phases.
- Home Appliance Sum
- Total current of home appliances detected by the electricity meter, excluding the charging station.
- Standby Current Sum
- = Household Current Sum − Home Appliance Sum − Charging Current Sum.
DLB Settings: How to Configure via the Charger Display
All DLB parameters are configurable directly from the charger's LCD menu using the physical front-panel buttons — no app or laptop required for on-site setup.
- Navigate to the DLB menu from the main settings screen using the Up / Down / OK buttons.
- Select Plan A (single-phase or three-phase per-phase max) or Plan B (three-phase total sum).
- Enter your household total current limit and confirm to activate load balancing immediately.
- Live DLB status is shown on the main display, updating in real time as household loads change.
- Settings are retained after power loss — no reconfiguration needed after an outage.
DLB Signal Cable & Energy Meter Connection
The DLB sensor communicates with the charger via a dedicated signal cable, providing continuous real-time data from the energy meter or CT clamp to the wallbox.
- The energy meter or CT sensor connects to the charger's RS485 / signal input terminal.
- Plug-and-clamp installation — no interruption to the live supply cable required.
- Clear labelling on all terminals makes wiring straightforward for a qualified electrician.
- Low-voltage signal cable can run alongside the power supply cable without interference.
- Compatible with both single-phase (1P) and three-phase (3P) energy meter configurations.
Menu Navigation: Charge Plan & Full Settings Guide
The charger's on-screen menu is logically structured so every setting — from DLB configuration to RFID management — is accessible within a few button presses.
- Top-level menu covers: Charge Plan, DLB Settings, RFID Management, Schedule, Wi-Fi, and System Info.
- Charge Plan sub-menu lets you select Plan A or Plan B and input your current limits.
- All menu items are displayed in plain English on the 2.8-inch LCD with clear navigation arrows.
- Button layout: Left/Right to navigate, Up/Down to change values, OK to confirm, Back to cancel.
- Factory reset option is available in System Settings if you need to restore defaults.
Technical Specifications: Single & Three Phase, Global Voltage
Engineered to work with electrical standards worldwide, this charger adapts to different supply configurations without modification — from standard home sockets to commercial three-phase supplies.
- Single-phase 230V and three-phase 400V support from a single hardware platform.
- Compatible with both 50Hz and 60Hz grid frequencies.
- Charging plug meets GBT standard; control box meets GB/T 20234 principle.
- Contact bush: copper alloy with silver plating for low-resistance, corrosion-proof connections.
- Operating temperature: −30°C to +55°C; Protection level: IP66 (working state).
2.8-Inch LCD Display: All Models at a Glance
The high-brightness colour LCD shows all essential charging information at all times. Screen content differs slightly by model to reflect the available phase data.
- 7.6kW (1P) model: Shows charging voltage, current, power, session energy (kWh), temperature, and connection status.
- 11kW / 22kW (3P) models: Displays per-phase voltage and current (L1, L2, L3) alongside total power and session energy.
- Physical button layout: Up, Down, Left, Right, and OK — all labelled on the front panel for intuitive navigation.
- Screen remains readable in bright sunlight and low-light garage conditions without adjustment.
- Status icons for Wi-Fi, Bluetooth, RFID, charging, standby, fault, and scheduled mode.
RFID Card Management: Add, Delete & Secure Access
The built-in RFID reader lets you control exactly who can start a charging session — ideal for shared driveways, rental properties, and multi-user commercial installations.
- Adding a card: Enter RFID menu → select "Add Card" → tap the new card to the reader → confirm to register.
- Deleting a card: Enter RFID menu → select "Delete Card" → tap the card to remove → confirm deletion.
- Up to 10 RFID cards can be registered to a single charger for multi-user access.
- In RFID mode, charging only begins after a registered card is presented — preventing unauthorised use.
- Switching to plug-and-play mode (no card required) takes just a few presses on the front panel.
Enable / Disable RFID: Flexible Access Control
Toggle the RFID gate on or off at any time without losing your registered card list — so you can switch between shared-access and private modes instantly.
- RFID function can be enabled or disabled directly from the charger's Settings menu or via the Tuya App.
- When disabled, the charger operates in plug-and-play mode: charging starts automatically on connection.
- When re-enabled, all previously registered cards are immediately active again — no re-registration needed.
- Device lock key prevents third parties from changing the RFID setting or any other configuration.
- Panel lock can be set via the app or the front-panel menu to secure settings from accidental changes.
Intelligent Temperature Control: Auto Cut-Off at 85°C
The integrated thermal management system continuously monitors internal charger temperature and responds automatically — keeping the unit and your vehicle's battery safe in all weather conditions.
- Charging pauses automatically if internal temperature exceeds 85°C — preventing hardware damage or fire risk.
- Once the unit cools below 65°C, charging resumes automatically without any user action.
- Real-time temperature is displayed on the LCD screen and visible in the Tuya App for full transparency.
- Designed to operate reliably from −30°C in freezing winters to +55°C in hot climates.
- Breathable waterproof membrane on the enclosure assists heat dissipation while keeping moisture out, extending service life.
Smart App Control via Tuya: Full Remote Management
The free Tuya Smart / Smart Life App (iOS & Android) gives you complete control over your charger from anywhere — turning your smartphone into a powerful charging management centre.
- Start, stop, or pause charging sessions remotely at any time with an internet connection.
- Monitor real-time charging current, voltage, and power output directly from the app home screen.
- View detailed charging history and energy consumption records for the past 12 months with visual data charts.
- Set up recurring weekly charging schedules to automatically charge during off-peak tariff hours.
- Receive push notifications for charging start, completion, and any fault alerts.
- Unbind a phone from the charger easily via the app to allow a new user to take ownership.
Weekly Charging Planner & App Interface
Bluetooth Control: Smart Access Without Wi-Fi
The charger maintains full app functionality even in locations without a Wi-Fi signal — ideal for underground car parks, remote garages, or areas with poor network coverage.
- Direct Bluetooth connection works within a 10-metre range — no router required.
- All core functions remain accessible: start/stop, adjust current, monitor real-time status.
- For first-time setup without Wi-Fi, pair using your phone's personal hotspot — mobile data is sufficient.
- Once paired, the charger remembers your device for seamless automatic reconnection on future visits.
- Bluetooth mode is especially useful in multi-storey car parks where Wi-Fi signal often does not penetrate.
Device Lock: Prevent Unauthorised Changes
A keypad lock prevents third parties from adjusting any settings on the charger — essential for shared driveways, commercial installations, or any location where the charger is publicly accessible.
- Single-press lock secures the front-panel buttons from any input without disconnecting the active charging session.
- Lock can be activated from the front panel menu or remotely via the Tuya App.
- Protects current limits, charging schedules, DLB settings, and RFID configuration from tampering.
- Panel stays locked across power cycles — no need to re-lock after an outage.
8 Intelligent Safety Protections: Full-Spectrum Coverage
Safety is built into every layer of this charger — from the housing to the internal electronics — meeting the most stringent international standards for home EV charging.
- Leakage Protection (restart recover): Detects earth fault currents and trips instantly, recovering automatically once the fault clears.
- Over / Under Voltage Protection: Automatically disconnects charging if supply voltage falls outside safe operating limits.
- Lightning Protection: Surge protection guards charger and vehicle electronics against nearby voltage spikes.
- Overcurrent Protection: Prevents damage to wiring and components if current exceeds rated capacity.
- Overheat Protection: Auto cut-off at 85°C, automatic resume at 65°C.
- Ground Protection: Earth fault detection ensures a safe connection before every session.
- IP66-rated waterproof enclosure and UL94 V-0 flame-retardant housing provide robust physical protection.
- LED charge status indicators help identify working condition at a glance without opening the app.
IP66 Outdoor Rated: Weatherproof Year-Round Performance
The IP66 certification confirms this charger is fully protected against dust ingress and sustained water jets — equally at home in an open driveway or a covered garage.
- IP66 dust rating: completely sealed against dust and particulate matter that could damage internal components.
- IP66 water rating: withstands direct water jets from any direction — suitable for outdoor use in rain.
- High-strength, UV-resistant outer shell resists fading, cracking, and brittleness from long-term sun exposure.
- UL94 V-0 flame-retardant housing — the highest standard for self-extinguishing plastics.
- Suitable for both indoor installation (garages, carports) and exposed outdoor wall mounting.
Waterproof Breathable Membrane: Dual Protection & Longevity
A specialist waterproof and breathable membrane is integrated into the enclosure to keep moisture out while allowing internal components to cool efficiently — extending service life in all climates.
- Prevents water ingress from rain, condensation, and high-pressure cleaning while maintaining IP66 rating.
- Allows warm air generated by internal electronics to escape, preventing heat build-up that shortens component lifespan.
- Works in concert with the intelligent thermal cut-off system to provide layered temperature protection.
- Particularly effective in environments with frequent temperature swings that cause pressure differentials inside sealed enclosures.
Dimensions & Button Function Reference
Electrical Performance Table & Wiring Diagrams
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Premium Cable Materials: 99.95% Pure Copper & Silver-Plated Pins
Every material in the charging cable is selected to exceed industry-standard specifications for efficiency, safety, and long-term durability.
- 99.95% pure copper conductor: Minimises resistive losses and heat generation inside the cable — far above the purity of standard cables.
- Silver-plated connector pins: Superior corrosion resistance and low contact resistance after thousands of mating cycles.
- TUV-certified TPU outer jacket: Flexible in cold temperatures, UV-resistant, and rated for year-round outdoor use.
- 5-metre standard length provides comfortable reach from most wall-mounted charger positions to the vehicle charge port.
- TUV certification on the cable assembly confirms independent verification of electrical and mechanical safety standards.
TÜV Rheinland Certified Cable: 5-Metre, Full-Length Verified
The included charging cable carries TÜV Rheinland certification — one of the most recognised independent safety marks for electrical equipment worldwide.
- Total cable length measured from the charger's internal connection block to the vehicle plug: 5 metres.
- TÜV Rheinland certification covers electrical safety, insulation quality, and mechanical durability of the full assembly.
- GBT plug meets GB/T 20234 standard for compatibility with all GBT-standard electric vehicles.
- Flexible, cold-weather rated jacket stays pliable down to −30°C for comfortable use in winter.
What's in the Box
Compatible with All Major EV Brands
About Feyree Technology
