12V 21Ah Li-ion Battery Pack (3S7P) | Rechargeable Power Module

12V 21Ah Lithium-Ion Battery Pack (3S7P)

This high-capacity 12V 21Ah Li-ion battery pack delivers reliable power for solar energy systems, LED lighting, e-bikes, and portable power applications. Built with quality 18650 cells in a 3S7P configuration, it offers excellent energy density and cycle life for both DIY and professional systems.

Key Features

• Nominal voltage: 12V
• Capacity: 21Ah (3S7P configuration)
• Battery type: 18650 lithium-ion cells
• Rechargeable and protected for safe, long-term operation
• Ideal for solar storage, portable devices, and DC power tools
• Compact, lightweight, and maintenance-free design

Specifications

Available Configurations & Pricing

Each configuration uses premium 18650 Li-ion cells with a high-current BMS board for safe, stable output. The 3S7P model is the recommended choice for solar storage, inverters, and portable energy systems.

• Configuration: 3S7P (21 cells)
• Voltage range: 9V–12.6V
• Capacity: 6Ah–21Ah (depending on model)
• Size: 150 × 65 × 96 mm (approx.)
• Weight: 0.5–1.1 kg
• Battery chemistry: Li-ion (18650 cells)

Applications

• Solar and renewable energy storage
• LED lighting and portable power stations
• Electric vehicles, scooters, and robotics
• DIY inverter and backup power systems

Each battery pack is factory-tested for consistency and reliability, providing long cycle life and stable output voltage for critical energy projects.