OptiMate TM-391 – Advanced LiFePO4 12.8V Smart Charger & Maintainer (4S / 6A)

The OptiMate TM-391 is a premium smart charger engineered specifically for LiFePO4 (12.8V/13.2V) lithium batteries, delivering high-current, precision charging for demanding applications. With its advanced 10-step charging program and integrated safety electronics, it ensures fast, stable, and safe charging for high-performance lithium batteries.

Designed for environments where reliability is critical, the TM-391 continuously monitors battery condition, optimizes charge levels, and maintains ideal voltage during storage. Perfect for light-sport aircraft, experimental aircraft, high-performance motorcycles, UTV/ATV, marine, and powersports vehicles.

Key Features

• Optimized for LiFePO4 4-cell (12.8V–13.2V) batteries.

• 6A high-current output for rapid and safe charging.

• Advanced 10-step charging and maintenance program.

• Intelligent diagnostics and battery recovery capability.

• Automatic maintenance mode for long-term storage.

• Full protection: reverse polarity, overcharge, temperature, and short-circuit.

• Includes high-quality alligator clamps and permanent battery lead.

• Rugged, workshop-grade construction.

Specifications

• Model: OptiMate TM-391

• Battery Type: LiFePO4 12.8V (4S)

• Charging Current: Up to 6A

• Charging Program: 10-step automatic

• Functions: Diagnostics, charge, optimization, maintenance, recovery

• Applications: Light-sport aircraft (EarthX, Shorai, Antigravity), motorcycles, UTV/ATV, powersports, marine

A fast, intelligent, and highly reliable charger—perfect for maintaining high-performance LiFePO4 batteries at peak health.