OptiMate 3 TM431 12V 0.8A Smart Battery Charger Motorcycle Powersport

OptiMate 3 TM-431 
Key Features:

• Product Type: Smart Battery Charger, Tester & Maintainer
• Battery Voltage: 12V
• Charging Current: 0.8A constant current
• Battery Chemistry: Lead-acid only — STD/wet-cell, AGM, GEL, EFB
• Recommended Battery Capacity: 2.5–38Ah on the current official specification
• Charging Voltage Range: 2V–14.4V
• Charging Program: 7-step, fully automatic
• AC Input: 100–240V AC, 50–60Hz
• Low-Voltage Recovery: Starts from 2V
• Application: Motorcycle and powersports batteries
• Warranty: 3-year limited replacement warranty OptiMate

Construction

• Fully sealed, weatherproof charger housing
• Integrated wall-mount provisions
• Approximately 6 ft / 180 cm AC supply lead
• Approximately 6 ft / 180 cm charging lead
• SAE-style output connector
• Designed for indoor or outdoor charging/maintenance use. OptiMate

Features

• Fully automatic 7-step charging and maintenance program
• Diagnoses battery condition
• 2-step desulfation recovery
• Recovers deeply discharged lead-acid batteries from as low as 2V
• Automatically charges and optimizes the battery
• Tests battery condition after charging
• 24/7 long-term maintenance
• Spark-suppressed operation
• Reverse-polarity protection
• Automatic shutdown if the battery is disconnected or the output is short-circuited
• Designed to prevent overcharging during long-term maintenance
• Safe for vehicle electronics when used as instructed. OptiMate

Dimensions

TecMate's current OptiMate 3 specifications provide cable lengths but do not publish reliable bare-charger length × width × height or net product weight:

• AC Cable: 6 ft / 180 cm
• Charge Cable: 6 ft / 180 cm

For eBay/Walmart shipping information, I recommend measuring the actual TM431 retail carton rather than using dimensions from another OptiMate 3 regional version. OptiMate

Performance

• Output: 12V DC
• Maximum Charge Current: 0.8A
• Current Battery Range: 2.5–38Ah
• Low-Voltage Start: 2V
• Maximum Charging Voltage: 14.4V
• Program: 7-step automatic
• Maintenance Duration: Suitable for continuous long-term maintenance
• The current manual states a charge rate of approximately 0.8Ah per hour, with a 38Ah battery taking roughly 48 hours under its stated conditions. OptiMate

Applications

Designed primarily for 12V lead-acid batteries used in:

• Motorcycles
• Scooters
• ATVs / quads
• UTVs / side-by-sides
• Personal watercraft / jet skis
• Snowmobiles
• Lawn mowers and similar small-engine equipment. OptiMate

Do not use TM431 for lithium-ion/LiFePO₄ batteries. The current manual specifically identifies it as a charger for 12V lead-acid batteries and states not to use it for Li-ion batteries. OptiMate

Included

• 1 × OptiMate 3 TM431 12V 0.8A Charger/Maintainer
• 1 × Weatherproof permanent battery lead with ring terminals
• 1 × Battery clip / alligator clamp set
• Integrated AC and charging cables.