USB Li-ion Charger 7.4V 400mA – SM XH Plug RC Toys & Boats
USB Li-ion Charger 7.4V 400mA – SM XH Plug RC Toys & Boats
USB Li-ion Battery Charger 7.4V 400mA for RC Toys, Cars & Boats
Keep your RC vehicles powered and ready to go with this compact, reliable USB Li-ion charging cable. Designed for 7.4V (3.7V × 2) lithium-ion battery packs, this charger is compatible with a wide range of connector types — SM-2P, SM-3P, SM-4P (Reverse), XH-3P, and XH-4P — making it a versatile pick for RC cars, boats, and other hobby-grade electric vehicles.
Made in Mainland China.
Key Features
- Universal USB Input: Automatically adapts to standard USB power sources (5–20V DC), so you can charge from any USB wall adapter, power bank, or computer port.
- 400mA Output Current: Delivers a steady, controlled 400mA charge to keep your Li-ion battery packs in great shape.
- 7.4V Output (3.7V × 2): Perfectly matched for 2-cell Li-ion/LiPo battery packs commonly used in RC hobby equipment.
- Smart Load Identification Chip: Built-in intelligent chip blocks excessive current from entering the battery, protecting your device and extending battery life.
- Multi-Connector Compatibility: Fits SM-2P, SM-3P, SM-4P (Reverse), XH-3P, and XH-4P connector types — check your battery connector before ordering.
- Compact & Convenient: Cable length of approximately 64cm (2.47 inches) — easy to store and travel with.
Specifications
| Output Current | 400mA |
| Output Voltage | 7.4V (3.7V × 2) |
| Input | USB (5–20V DC) |
| Cable Length | ~64cm / 2.47in |
| Compatible Connectors | SM-2P, SM-3P, SM-4P Reverse, XH-3P, XH-4P |
| Battery Type | Li-ion / LiPo |
Package Includes
- 1 × USB Li-ion Charging Cable
Important Notes
- Always verify the correct positive/negative polarity connection between the charger and your battery before use.
- Product images are for reference only; slight color variations may occur due to monitor settings.
- Please allow minor dimensional differences due to manual measurement.
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Learn more: EPA guidance on lithium-ion battery handling
Frequently Asked Questions
Q: Which connector types does this USB Li-ion charger support?
A: This charger is compatible with SM-2P, SM-3P, SM-4P (Reverse), XH-3P, and XH-4P connector types. Please verify your battery's connector type before purchasing to ensure compatibility.
Q: Can I use this charger with a standard USB wall adapter or power bank?
A: Yes! The charger automatically adapts to standard USB power sources with an input range of 5–20V DC, making it compatible with most USB wall adapters, power banks, and computer USB ports.
Q: Is this charger safe to use with Li-ion battery packs in RC vehicles?
A: Absolutely. The built-in intelligent load identification chip monitors and controls the charging current, preventing excessive current from reaching your battery pack and protecting your RC vehicle's battery from damage during charging.
Q: What is the output voltage and current of this charger?
A: This charger delivers a 7.4V output (made up of 3.7V × 2 cells) at 400mA output current — ideal for standard 2-cell Li-ion and LiPo battery packs used in RC cars, boats, and similar hobby equipment.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.