Home / 11.1V 5800mAh 3S1P 21700 M58T Li-Ion Battery Pack for RC Boats with Built-In BMS and 12.5A Max Discharge Current
The 11.1V 5800mAh 3S1P 21700 M58T Li-Ion Battery Pack provides stable, long-lasting power for RC boats and fishing bait boats. Its built-in BMS protects against overcharge, over-discharge, overcurrent, and short circuits. With a 12.5A maximum discharge current, it supports smooth operation, reliable navigation, and consistent performance. Custom connectors, wiring, labels, and dimensions are available for OEM projects and replacement applications.
- Model: 18650-3S1P-11.1V
- Cell Dimensions: 21 × 63× 70 mm
- Nominal Voltage: 11.1V
- Discharge Current: 12.5A
- Capacity: 5800 mAh
- Internal Resistance: 180 mΩ
- Application: RC Boats
- Charging Voltage: 12.6 V
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Overview
The 11.1V 5800mAh 3S1P 21700 M58T Li-Ion Battery Pack is designed to provide dependable power for RC boats, fishing bait boats, and other portable marine equipment. Built with high-capacity 21700 lithium-ion cells, it delivers extended runtime while maintaining a practical pack size and stable voltage output. The 3S1P configuration provides a nominal voltage of 11.1V, making it suitable for compatible motors, controllers, and onboard electronics. A built-in BMS helps protect the battery against overcharge, over-discharge, overcurrent, short circuit, and abnormal operating conditions. With a maximum discharge current of 12.5A, the pack supports smooth acceleration, reliable navigation, and consistent performance under changing loads. Its durable construction can be customized with different connectors, wire lengths, protective wrapping, labels, and pack dimensions. This battery is suitable for replacement, OEM, and customized projects requiring safe, efficient, and long-lasting energy for remote-controlled watercraft. It also supports efficient recharging and dependable cycling for frequent outdoor use.
Product Details
- 11.1V 3S1P Configuration: Three 21700 lithium-ion cells are connected in series to provide stable power for compatible remote-controlled equipment.
- 5800mAh High Capacity: Delivers extended operating time for longer boating and fishing sessions.
- 21700 M58T Cells: Uses high-capacity cylindrical lithium-ion cells for efficient energy storage and dependable output.
- 12.5A Maximum Discharge Current: Supports smooth acceleration, reliable navigation, and stable performance under changing loads.
- Built-In BMS Protection: Helps protect against overcharging, over-discharging, overcurrent, and short circuits.
- Rechargeable Design: Provides a practical replacement power solution for frequently used RC and portable marine equipment.
Application Areas
- Remote-controlled boats
- Fishing bait boats
- Electric toy boats
- Small RC watercraft
- Portable marine electronic equipment
- Compatible 11.1V motor-driven devices
Technical Parameters
| Model | 21700-3S1P-11.1V |
| Cell Size | 21 × 63× 70 mm |
| Discharge Current | 12.5A |
| Nominal Voltage | 11.1V |
| Capacity | 5800 mAh |
| Internal Resistance | 180 mΩ |
| Processing Method | Customized As Required |
| Application | RC Boats |
| Charging Voltage | 12.6 V |
