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View compareFainWan 2Pack 7.4V / 2 x 3.7V 400mA USB Charger Cable with SM-4P 4 pin Plug Compatible with Old Version UDI001 UDI008 UDI009 and
FainWan 2Pack 7.4V / 2 x 3.7V 400mA USB Charger Cable with SM-4P 4 pin Plug Compatible with Old Version UDI001 UDI008 UDI009 and
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Estimated delivery: 3-5 days(United States), 8-12 days (International).
Return within 15 days after Delivery. Duties & taxes are non-refundable.
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Description
Description
SM-4P Connector Plug, Only in RC Boat Battery which use same SM-4P plug. When put in plug convex side on above,flat side on below., first and third pin is positive, second and forth pin is negative. please make sure your battery is same. don't reversed. 7.4V / 2 x 3.7V 400mA USB Charger Cable with SM-4P 4 pin Plug for Old Version UDIRC UDI001 UDI008 RC Boat 7.4V / 2 x 3.7V 400mA USB Charger Cable with SM-4P 4 pin Plug for Altair AA102 Big size Red RC Boat and Altair MidSize AA Wave RC Remote Control Boat Yellow colour, 7.4V / 2 x 3.7V 400mA USB Charger Cable with SM-4P 4 pin Plug for HONGXUNJIE HJ808 Red and Blue 2.4Ghz RC Boat 7.4V / 2 x 3.7V 400mA USB Charger Cable with SM-4P 4 pin Plug Compatible with Cheerwing Venom Black orange RC Boat Remote Control Boat battery. Package include: 2 x 7.4V SM-4P USB charger cable
Shipping Information
Shipping Information
Shipping Information for Toytooth
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All orders are shipped in double boxes and come with full insurance for additional protection. Items are usually shipped within 2-3 working days. We are based right here in the United States, and we use secure shipping methods for your peace of mind. For your protection, we may contact you for extra verification of the payment method.
The product will be delivered to your doorstep, carefully packed to avoid any damage. We understand that privacy is important to our customers, and we aim to provide DISCREET packaging. The product name, description, sender's name, or any details that could hint at the product inside will be encrypted to ensure privacy. The package you receive will be completely discreet.
Note: All orders above $250 will require a signature upon delivery.
Shipping Destinations
We currently ship to the following countries:
| United States |
Spain | Denmark | Slovak Republic | Latvia |
| Great Britain | Poland | Japan | Singapore | Finland |
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| Sweden | Italy | Ireland | Saudi Arabia | Switzerland |
Processing Time
Orders are processed within 1-3 business days.
Shipping Methods & Delivery Times
Delivery times are estimates and may vary depending on the customer's location, customs processing, weather conditions, or other unforeseen circumstances.
- Domestic orders: Usually take 3-5 business days to deliver.
- International orders: Usually delivered in 8-12 business days.
Shipping Costs
Shipping costs are calculated at checkout based on the shipping destination and selected shipping method. We offer free standard shipping within the United States.
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International orders may be subject to customs duties, taxes, and import fees imposed by the destination country. These charges are the responsibility of the customer. Please check with your local customs office for more details.
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Lost or Delayed Shipments
If your package is lost or significantly delayed, please contact our support team, and we will assist you in resolving the issue.
Returns & Refunds
For details on returns and refunds, please refer to our Return Policy page.
For any questions, feel free to contact our customer service team at support@toytooth.com.
Safety & Compliance
Safety & Compliance
⚠️ WARNING (California Proposition 65):
This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information, please visit www.P65Warnings.ca.gov.

Frequently Asked Questions
- Q: What type of RC boats is the FainWan 7.4V USB Charger Cable compatible with? A: The FainWan 7.4V USB Charger Cable is compatible with several RC boats that use the SM-4P connector plug, including the Old Version UDIRC UDI001, UDI008, UDI009, Altair AA102, Altair MidSize AA Wave, and HONGXUNJIE HJ808 RC boats.
- Q: How do I safely connect the SM-4P plug to my RC boat battery? A: To safely connect the SM-4P plug, ensure the convex side of the plug is positioned on top and the flat side is on the bottom. The first and third pins are positive, while the second and fourth pins are negative. Double-check your battery connections to avoid reversing them.
- Q: What is the charging capacity of the FainWan USB Charger Cable? A: The FainWan USB Charger Cable has a charging capacity of 7.4V with 2 x 3.7V and provides a current of 400mA, making it suitable for charging compatible RC boat batteries efficiently.
- Q: Does the charger have safety features to prevent overcharging? A: Yes, the FainWan charger features a built-in over-charge IC circuit protection. The charging indicator light is red while charging and changes to green when the battery is fully charged, ensuring safe operation.
- Q: Is this charger suitable for outdoor use and what should I consider for care? A: The FainWan USB Charger Cable is designed for indoor use with proper ventilation. Avoid exposing the charger to moisture and extreme temperatures to maintain its functionality and longevity.


