Key Features
• 15-Meter Heavy-Duty Cable
High-current 4 sq mm, 3-core copper cable suitable for long-duration and high-load EV charging.
• Built-in Earthing Solution
Includes a 6 mm pure copper earthing rod to create a safe and instant earth connection.
• Electrical Protection
Integrated Miniature Circuit Breaker (MCB) protects your EV and home wiring.
• Weather-Ready Design
The W3 Frunk features a waterproof, heat-resistant cable suitable for outdoor use in temperatures ranging from
–55°C to +50°C. The main unit should be kept in a shaded or covered area for optimal performance.
• 16A Socket Standard
Designed strictly for single-phase 16 Amp sockets to prevent overheating and fire risks.
• Portable & Compact
Reel design fits easily into your car boot or frunk for travel and daily use.
Who Should Buy the W3 Frunk?
The Wundercurrent W3 Frunk is ideal for EV owners who:
- Charge their vehicle in locations without proper earthing
- Own higher-capacity or long-range EVs
- Want a future-ready charging solution with higher current handling
- Park in apartments, basements, outdoor lots, or travel frequently
- Prefer a safer alternative to regular extension cables
For smaller city EVs with moderate charging needs, the W2 Frunk may be sufficient.
The W3 Frunk is recommended for maximum safety, durability, and long-term use.
W3 Frunk vs W3 Ultra – Key Differences
| Feature | W3 Frunk | W3 Ultra |
| Cable Length | 15 meters | 25 meters |
| Cable Thickness | 4 sq mm | 4 sq mm |
| Protection Type | MCB | RCBO |
| Digital Energy Meter | Not included | Included |
| Safety Level | High | Advanced |
| Portability | Easy to carry | Slightly heavier |
Choose W3 Frunk for reliable everyday charging.
Choose W3 Ultra if you need advanced protection, monitoring, and longer cable reach.
What’s Included in the Box
- Wundercurrent W3 Frunk EV Charger Unit
- Wundercurrent Travel Carry Case
- Pure Copper Earthing Rod
- 5m External Silicon Earthing Cable
- User Manual & Safety Instructions
Detailed Product Description
1. What is Wundercurrent and What Does It Do?
Wundercurrent is an EV charging extension reel designed for safe and convenient charging where fixed earthing is unavailable.
It enables reliable EV charging using a standard single-phase 16 Amp socket while providing its own external earthing solution.
2. The Earthing Solution – How It Works
The W3 Frunk includes a 6 mm pure copper earthing rod that can be driven directly into the ground to create a temporary but effective earth connection.
- Recommended Earthing Resistance: Below 5 ohms
- Designed to typically stay within safe limits
- Effectiveness may improve in wet soil conditions
3. Critical Safety Warning – 16A vs 6A Sockets
Can I charge my EV using a 6 Amp socket? No.
- Overheating and fire risk
- Damage to EV battery or onboard charger
- Severe electrical faults
Always use a 16 Amp socket for safe EV charging.
Usage Guidelines
How to Set Up the Earthing Rod
- Locate suitable soil near your charging point
- Drive the sharp end of the copper rod firmly into the ground
- Connect the earthing cable from Wundercurrent to the rod
Weather & Outdoor Use
- The cable is waterproof and heat-resistant
- Charging in rain is safe
- Keep the main unit (reel/MCB box) shaded or covered
Technical Comparison – W2 vs W3
| Feature | W2 Frunk | W3 Frunk |
| Cable Size | 2.5 sq mm | 4 sq mm |
| Current Capacity | Moderate | Higher |
| Long-Duration Charging | Not ideal | Recommended |
| Future-Ready | Limited | Yes |
Vehicle Compatibility – W3 Frunk
- Tata: Nexon EV, Curvv EV, Harrier EV
- Mahindra: XUV400, XUV E8, XUV 9e, BE 6
- Hyundai: Kona Electric, IONIQ Electric, Creta EV
- BYD: e6, Atto 3, Seal, Sealion 7, eMAX-7
- MG: ZS EV, Windsor EV, Cyberster EV
- Kia: EV6, Carens, Clavis
- Volvo: EX40
- Mercedes-Benz: EQB
- VinFast: VF6, VF7
Technical Specifications
- Product Name: Wundercurrent W3 Frunk EV Charger Extension Reel
- Cable Length: 15 meters
- Core Type: 3-core copper cable
- Conductor Size: 4 sq mm
- External Earthing: 6 mm pure copper rod
- Operating Temperature: −55°C to +50°C
- Compatibility: Single-phase 16A sockets
Warranty & Support
- 1-year warranty (Amazon & Flipkart)
- 2-year warranty (Wundercurrent website)
- 30-day replacement for manufacturing defects
- Support: +91 93131 97730 | wundercurrentev@gmail.com
FAQs
Q: Does the Wundercurrent W3 Frunk fit inside a car’s frunk?
Yes. It is designed to fit inside most modern EV frunks.
Dimensions: 30 cm (L) × 24 cm (W) × 20 cm (D)
Q: Does Wundercurrent increase charging speed?
No. Charging speed depends on your EV’s onboard charger.
Q: Can I leave it outside in the rain?
The cable can remain outside, but the main unit should be kept dry.
Q: Why is earthing important?
Earthing provides a low-resistance path for current leakage, preventing electric shock and protecting EV electronics.
Q: How do I initiate a replacement?
Contact our support team via phone or WhatsApp at +91 93131 97730.










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