Optimate Lithium Battery Charger TM391
Optimate Lithium Battery Charger TM391
Optimate Lithium Battery Charger TM391
Optimate Lithium Battery Charger TM391
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NOTE: The original Optimate TM291 has now been replaced by this new Optimate TM391.

The Optimate TM391 Lithium battery charger from TecMate is the ultimate battery charger for bikes that come from the factory equipped with an expensive Lithium battery. These include motorcycles like the Honda CRF450RL and CRF450L, and new Ducati Hypermotard 698. In fact, these are the chargers that Honda dealers recommend for their bikes and it's what we use here at the shop for our bikes.

Standard Features:
  • OptiMate™ Lithium, the first OptiMate to protect your LiFePO4 battery unlike any other charger
  • Will protect your investment and keep your Lithium Iron Phosphate (LiFePO4/LFP) battery performing as advertised for a very long time
  • Fully Automatic 12.8V/13.2V lithium (LFP) battery saving, charger, tester and maintainer
  • Delivers up to 6A charge current; Ampmatic technology lowers charge rate for smaller lithium batteries
  • Multi-step program saves from 0.5V, then charges and balances cells within the battery quickly and efficiently
  • Push button reset for Battery Management System (BMS) on smart lithium batteries
  • Includes TUNE stable power supply mode for troubleshooting with engine off


  • (**OPTIONAL) Lithium Battery Monitoring Lead: (adds to price)
    If you want to install a lead on your bike that monitors your battery, this is the way to go. We're using these on our Honda CRF450RL and Ducati Hypermotard 698, and they make it easy to take a quick glance and see the status of the battery.
  • Permanent power sport battery lead with integrated battery status / charge system monitor for 12.8 / 13.2 V lithium
  • Monitor charge of your stored power sport vehicle lithium starter battery or confirm if the vehicle charging system is working correctly
  • 2 automatic Modes – Battery charge level monitor (single LED blink mode) and Charging system test (arrow mode)
  • 3 LEDs display ‘full to empty’ voltage range for 12.8 V/13.2 V Lithium batteries (LFP/LiFePO4/Lithium nano Phosphate); 4th LED warns when vehicle system or connected battery charger is overcharging
  • Battery charge level : LED matching charge level blinks every 10 seconds (long term draw less than 0.2mA)
  • Vehicle Charge system : LED arrow mode activates when charge voltage reaches effective lithium charge range of 14.2 V – 14.5 V (v green LED)
  • OVERCHARGE warning activates at 14.6 V+
  • SAE charge port with weatherproof sealing cap
  • #O-127




  • ** IN STOCK - Usually leaves our warehouse in 1-2 business days.



    Optimate Lithium Battery Charger TM391
    TM391Retail Price: $141.95Our Price: $139.95
    Battery Monitoring Lead: 





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