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Optimate 3 12V Battery Charger & Maintainer


Stock Level: 2

Product Information

OptiMate 3, the next generation of the highly rated OptiMate 3+. Tested, proven and endorsed by numerous power sport vehicle OE’s and users world-wide.

NEW in OptiMate 3 : 
Vent free enclosure  -  TM connectors  -  Moulded wall mounts


OptiMate 3 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, although it can also maintain larger batteries (it will just take longer to charge).

Why OptiMate 3?  Forgot to switch off the ignition / lights or did not hook up the battery to a maintainer during off-season and now the battery is ‘dead’? There is no need to rush out and buy a new battery as OptiMate 3 has been proven to save neglected, deep discharged batteries other smart chargers can’t.

Think that batteries only last 2-3 years? OptiMate 3 has been proven to extend battery life to 400%; batteries can last 8 years if maintained with OptiMate 3. To make this work always hook up OptiMate 3 to the battery when the vehicle is parked and 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.

Includes 2 connection accessories : 

TM-71 permanent ringlet connector with weatherproof cap & TM-74 set of battery clips.

Fully automatic operation that includes all safety features such as reverse polarity protection, no spark connection.

2 year limited warranty.

Charging Amps

0,6Amp of constant current available from 2V to 14,3V.

Charging Stages


  • Battery diagnosis
  • Desulphation and recovery
  • Bulk charge
  • Charge verification
  • Maintenance program that includes a battery test.


Desulphation Stages

All batteries lose charge when stored, discharge is speeded up when the battery is in the vehicle. Sulfation develops if a battery is left discharged for too long. Sulfation causes the battery to lose voltage and capacity, and the ability to accept a charge. The lost capacity cannot be returned by a standard smart charger, instead it quickly and incorrectly shows the battery as fully charged. OptiMate 3+ detects sulfation, then applies "first aid" desulphation - carefully controlled higher voltage at low current - for up to 2 hours. When the battery is ready to accept charge, bulk charge starts. IMPORTANT: OptiMate 3 desulphation mode works best with the battery disconnected from the vehicle, Its smart control inhibits desulphation mode if vehicle electronics is detected. During long term charge maintenance mode a frequent desulfating pulse prevents sulfation from re-occurring.

Smart Control

Electronic controller with battery saver and test functions, for precise voltage and current delivery.

Test Results

OptiMate 3 tests & confirms if a battery can retain sufficient voltage to crank an engine before it engages long term maintenance mode. A battery unable to hold charge or if excessive discharge is detected during long term maintenance charging the RED TEST LED will light. Long term maintenance charging continues even with a RED test light.

Product Code: OPT3

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