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TecMate OptiMate 3+ Battery Charger
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TecMate OptiMate 3+ Battery Charger and Maintainer

The TecMate OptiMate 3 Plus desulfater-charger-maintainer is recommended for STD (with removable filler caps), sealed AGM (absorbed glass mat) & sealed GEL 12V lead-acid batteries from 2Ah to 45Ah. It can also maintain larger batteries (it will just take longer to charge). The OptiMate 3 +will safely maintain the battery at 100%, never overcharging, thanks to its unique 30 min charge, 30 min rest cycle during every hour of long term maintenance charge. If the battery’s resistance is abnormally high due to sulfation, a voltage of up to 20V is automatically applied to overcome this to recover very flat or neglected batteries (when disconnected from the vehicle). 


  • Vent free enclosure
  • SAE connectors
  • Stylish new splashproof enclosure with wallmounts
  • Easy-to-read LED information panel
  • 2 year limited warranty


  • Safe for use on 12V lead-acid batteries: AGM/MF, Standard, & GEL batteries
  • 2Ah to 45Ah rated capacity
  • Fully automatic 5 stage program control
  • Reverse drain current less than 0.5mA
  • Output current (bulk charge) 0.6A
  • Automatic desulfation
  • Charge time limit safe to leave connected for months at a time
  • Maintain / test cycles 30 min/30 min (alternating hourly)
  • Charge retention test monitors during 30min no charge intervals
  • Size 7 ½ x 3 x 2 ¼ inches (190 x 75 x 56 mm)


  • SAE-71 permanent ringlet connector with weatherproof cap
  • SAE-74 set of battery clips


Product Style RevZilla Item # Manufacturer Product # Availability
TecMate OptiMate 3+ Battery Charger 869384 TM151/TM-151 Out of Stock


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My battery needs to be charged.
Piotr F on Feb 27, 2014
My battery needs to be charged.
Piotr F on Feb 27, 2014
Can i use it for a Bonneville Triumph? what type of powerlet do i need?
Ivan11 on Jan 6, 2014
BEST ANSWER: I use the Optimate to charge my Bonneville T100. It works well. You can use aligator clips but I use the quick connect adaptor option that mounts to the battery terminals and the terminal end is a quck connect plug which is easy to disconnect and connect.