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OptiMATE 3 12v 0.8 Amp 7-Step Battery Saving Charger-Tester-Maintainer

Was: $75.00
Sale Price: $70.95
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Product InformationStore Part Number: TM-431


OptiMate 3, the all-in-one tool for 12V battery care at home. Diagnoses, recovers, charges, tests and optimally maintains, automatically. The latest version of OptiMate 3 retains all easy-to-use characteristics of the over 2 million OptiMates produced since 1995, but is now lighter and more efficient than ever. The OptiMate 3 recovers sulphated batteries and then tests after charging. The maintenance program delivers only what the battery needs, never overcharges, never undercharges. 


  • Suitable for all types of 12V lead-acid batteries (STD, AGM & GEL) of rated capacity from 3 to 50 AH.
  • DIAGNOSES sulphated battery conditions
  • RECOVERS very neglected batteries from as low as 2 volts.
  • CHARGE VERIFICATION ensure optimal charge for every battery.
  • TEST automatically every hour. Advance warning of problems.
  • MAINTENANCE: Interactive float charge, max 800mA possible.
  • CHARGING AMPS : 0.8A (constant current)
  • Indoor / Outdoor (lowest temperature: -4°F / -20°C).
  • Global (100-240V 50-60Hz), high efficiency (CEC listed), fully sealed.
  • Weatherproof case with wall mounts, with 6ft AC supply lead and 6ft charge lead ending in SAE connector. Weatherproof battery ring connector & standard battery clip set included.
  • 3 Year Warranty

Tech Specs

  • Dimensions (LxWxH): 6.5 x 2.5 x 1.75 in
  • Weight: 1.34 lb
  • Shipping Weight: 3.0 lb
  • AC Input Voltage: 100–240 V
  • AC Input Frequency: 50–60 Hz
  • AC Input Amps: 0.23 A @ 100 VAC / 0.15 A @ 240 VAC
  • Power Useage (no battery connected): 0.0089 kWh / day
  • DC Output Amps: 800 mA
  • DC Nominal Voltage: 12 V
  • DC Bulk Charge: 14.2–14.5 V (12 V)
  • Model: TM-431
  • Manufacturer: Optimate
  • DC Float Voltage: 13.6 V (12 V) alternating w/ 30 minute rest
  • Charge Time Limit: 48 Hours (maintenance time: unlimited)
  • Maintain / Test Cycles: 30 min / 30 min (alternating hourly)
  • Charge Retention Test: GOOD (green) = battery voltage > 12.4 V
  • Enclosure Type: IP54 Fully Sealed
  • Input Cable Length: 6 ft
  • Output Cable Length: 6 ft
  • Operating Temperature Range: -20° C–40° C / -4° F–104° F
  • Ratings / approvals : Safety, EMC, Energy Efficiency, enclosure seal rating: IP54, CE, NRTL (UL & CSA), SAA (AU & NZ), approved by TUV Sud. BC (California Energy Compliant)
  • Warranty: 3 Years
  • Manufacturer Part #: TM-431
  • UPC: 5425006145312
  • Made In: China

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Reviews and Ratings

5.00 Average
5 Stars 3
4 Stars 0
3 Stars 0
2 Stars 0
1 Stars 0
Rated 5.00/5 Stars from 3 customer reviews.

Do you own the TM-431? Please, tell us what you think about it. It helps us provide you with better products. Please note that it may take up to 72 hours for your review to appear.

Solid piece of gear
So far, the OptiMATE is taking good care of the battery in my old GS!
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Written by on Feb 04, 2019. Verified Purchase — (3 of 5 customers found this review helpful
Seems to be working great
Haven’t had a chance to try to revive a dead battery, nor have I had it long enough to verify that it doesn’t overcharge a motorcycle battery, which is why I bought it, but early indications are that it is working as promised.
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Written by on Sep 03, 2020. Verified Purchase — (1 of 1 customers found this review helpful
Money Saver
Does a great job in keeping my multistrada's battery in optimal condition during winter storage and extended the lifespan well over the expected lifespan. It was also able to revive the battery of my Honda generator and added another year of lifespan on that one.

working great for me .
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Written by on Sep 16, 2020.

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