The OptiMate 2 Duo is a fully automatic 2A battery charger and maintainer for powersport batteries. It recognizes a supported 12V lead-acid or 12.8V/13.2V lithium iron phosphate battery and adjusts its program automatically, making it useful for regular charging and long-term storage maintenance.

Key features

• Lead-acid and LFP support: For standard, AGM, GEL, and EFB 12V lead-acid batteries, plus 12.8V or 13.2V LiFePO4/LFP batteries.
• Automatic 5-step program: Delivers a constant 2A and adapts to the battery without requiring a chemistry selection.
• Low-voltage start: The charging program can start when a compatible battery retains at least 4V.
• Continuous maintenance: Checks and maintains battery charge for long-term connection, with standby power below 0.5W.
• Weatherproof case: Suitable for indoor or outdoor use down to -40°F (-40°C), with wall mounts.
• Electronic protection: Designed to prevent overcharging and shut down automatically if disconnected or short-circuited.

Battery range and charging

Suitable for 12V lead-acid batteries from 6 to 96Ah for maintenance, and 12.8V/13.2V LiFePO4 batteries from 2 to 24Ah. TecMate states it can recharge a compatible battery up to 48Ah within 24 hours. Deep-discharged batteries may take longer.

Included accessories

Includes a weatherproof battery lead with an SAE connector and a battery clip set. The charger accepts 100 to 240V AC at 50 to 60Hz and includes 6ft (180cm) AC and charging leads.

Warranty

TecMate lists a 3-year limited replacement warranty. Refer to the manufacturer for warranty conditions.