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View compareFrequently Asked Questions
- Q: What is the voltage of the FainWan USB charger cable? A: The voltage is seven point four volts, with two times three point seven volts configuration.
- Q: How long is the FainWan USB charger cable? A: The length of the FainWan USB charger cable is not specified in the product details.
- Q: What type of connector does the cable use? A: The cable uses an SM-4P connector plug, which is specifically designed for certain RC boat batteries.
- Q: Is this charger compatible with UDI001 RC boats? A: Yes, this charger is compatible with UDI001, UDI008, and UDI009 RC boats.
- Q: How do I connect the FainWan USB charger cable to my battery? A: To connect, place the convex side of the plug on top and the flat side below, ensuring the first and third pins are positive.
- Q: Can this charger be used for Altair AA102 RC boats? A: Yes, it is compatible with Altair AA102 and other specified RC boat models.
- Q: How do I ensure my battery is compatible with this charger? A: Check that your battery uses the same SM-4P plug and matches the voltage requirements of seven point four volts.
- Q: What safety features does the FainWan USB charger cable have? A: The charger includes over-charge protection with a built-in IC circuit, changing the charging light from red to green when fully charged.
- Q: How should I store the FainWan USB charger cable? A: Store the charger in a dry, cool place away from direct sunlight to maintain its functionality.
- Q: Can I use this charger for HONGXUNJIE HJ808 RC boats? A: Yes, this charger is compatible with HONGXUNJIE HJ808 RC boats.
- Q: What is included in the package of FainWan USB charger cable? A: The package includes two pieces of seven point four volts SM-4P USB charger cables.
- Q: Is the FainWan USB charger cable suitable for beginner RC boat users? A: Yes, it is user-friendly and suitable for beginners, provided they follow the connection instructions.
- Q: What should I do if the charger doesn't work? A: If the charger doesn't work, check the battery compatibility and ensure proper connection before contacting customer support.
- Q: How can I tell if my battery is charging? A: The charger light will be red while charging and will change to green once the battery is fully charged.
- Q: Does this charger work with Cheerwing Venom RC boats? A: Yes, it is compatible with Cheerwing Venom RC boats that use the SM-4P connector.
- Q: What happens if I connect the charger incorrectly? A: Connecting the charger incorrectly may damage your battery, so ensure the correct orientation of the plug.

