OptiMate Lithium MONITOR O-127 x20

MSRP $324.95

Permanent power sport battery lead with integrated battery status / charge system monitor for 12.8 / 13.2V lithium.

Weatherproof battery lead with state of charge monitor for the 12.8V/13.2V LifePO4 / LFP battery in your parked performance vehicle – 24-7 battery status at a blink of an LED!

The 12V lithium battery monitor is recommended for powersport vehicles like a motorcycle, ATV, waterscooter or carIdeal for 12.8V/13.2V LiFePO4 / LFP lithium batteries found in the vehicles and craft above.


It has a SAE quick connect charge port for charging battery.
SAE quick connect charge port for charging battery when needed!


The 12V lithium battery monitor has ringlets that fit a variety of battery terminals with 15A fuse that protects -40° rated cable and electronics
With M6 / 1/4″ – M8 / 5/16″ ringlets that perfectly fit to powersport and most automotive battery terminals, and 15A fuse that protects the -40 rated cable and electronicsPremium quality!



With weatherproof sealing cap.

Battery status indication every 3 seconds (LED blinks).

Ideal charge range with engine running - 13.9V to 14.5 Volts.
WARNING! Charge voltage exceeds 14.6 Volts.






MSRP = Manufacturer Recommended Retail Pricing. Price in EURO and GBP include VAT of 20%. VAT in your region may differ. Price in USD and CAD do not include sales tax.





SKU: O-127JAR Categories: ,


Smart battery lead that measures voltage; monitors charge of a stored 12V Lithium (LMiFePO4) battery and confirms if the vehicle charging system is working correctly.

LENGTH: 24″ / 60cm (x20)

BATTERY CONNECTOR: 1/4″ (M6) / 5/16” (M8) ringlets

CHARGE CONNECTOR: 2-pin SAE, protected from dirt and liquid with rubber sealing cap and shroud.

OPERATION: 2 automatic Modes – Battery charge level monitor (single LED blink mode) & Charging system test (arrow mode).

  • Vehicle storage: 3 LEDs display ‘full to empty’ voltage range for 12.8V/13.2V Lithium batteries (LFP/LiFePO4/Lithium nano Phosphate); 4th LED warns when vehicle system or connected battery charger is OVERCHARGING! (long term draw less than 0.2mA).
  • Vehicle running: LED arrow mode activates when charge voltage reaches an effective lithium charge range of 14.2V – 14.5V (green LED). OVERCHARGE warning activates at +14.6V.


CABLE RATING: 16 AWG (1.31mm2) SPT-2W

FUSE: 15 Amp

USE: -40°C/-40°F very low temperature, remains flexible at ‘below freezing’ temperatures

STYLE: Fully enclosed electronic circuitry with 4 LEDs, SAE charge connector with rubber sealing cap & shroud

WARRANTY: 3-year limited replacement warranty