2 Pack 7.4V Battery Charger Cable With SM-4P 4-Pin Plug For 2 X 3.7V 400mA RC Boat Batteries UDI001 UDI008 UDI009 HJ808 HJ812 USB 2 Compatibility Durable Flexible Build For Quick Safe Recharges

2-Pack 7.4V SM-4P 4-Pin RC Boat Charger for 2x3.7V Batteries
✔️ 7.4V dual-cell charger with SM-4P 4-pin plug, 400mA

These two charger cables are designed for RC boats that use the SM-4P 4-pin plug. They support 7.4V battery packs (two 3.7V cells) and include simple LED indicators for charging progress.

✅ Compatible with 7.4V RC boat batteries using SM-4P plug
✅ 400mA charging rate for quick safe recharges
✅ Built-in overcharge protection for battery safety
✅ Includes two cables per pack for spare or multi-boat setups

💡 What is a SM-4P 4-pin RC boat charger cable used for in hobbyist watercraft?

It’s handy for charging 7.4V two-cell packs from USB or other power sources.

- Designed for RC boats with SM-4P connectors

- Safe, regulated 400mA charging current

- LED indicators show charging status

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