Optimate Monitor O-124JAR Permanent Power Sport Battery Lead with Integrated Battery Status/Charge System Monitor for 12V Lead-Acid

The OptiMate MONITOR O-124JAR is a permanent powersport battery lead with an integrated battery status and charging system monitor designed specifically for 12V lead-acid batteries. Once connected directly to your battery terminals, it provides 24/7 visual feedback on your battery's state of charge—including standard, GEL, and high-performance AGM types—and allows you to easily verify if your vehicle’s charging system is working correctly.

Features and Benefits

• Permanent battery connection — Features heavy-duty 1/4" (M6) / 5/16" (M8) combination ringlets that bolt directly to your powersport or automotive battery terminals for constant monitoring.

• SAE quick-connect charge port — Doubles as a connection point; simply plug your charger directly into the monitor's weatherproof SAE sleeve when your battery needs a top-up.

• Length: 60 cm (24″) cable provides optimal routing flexibility from the battery compartment to an easily accessible area on your vehicle.

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

• Vehicle storage: 4 LEDs cover the "full to empty" voltage range of all 12V lead-acid batteries, including higher-voltage AGM batteries for powersports (4th checkmark LED >= 12.7V). The LED matching the active charge level blinks every 3 seconds with an ultra-low long-term power draw of less than 0.2mA.

• Vehicle running: LED arrow mode automatically activates when the engine starts and the charge voltage reaches the ideal charging range—indicating a minimum of 13.5V (single checkmark green LED) or the ideal performance range of 14V+ (double checkmark green LED).

• 18 AWG / 0.82 mm² cable — Heavy-duty wiring rated with SPT-2W insulation to ensure accurate voltage sensing and reliable current delivery.

• Inline safety protection — Equipped with a 15A fuse to completely safeguard the vehicle's electrical system and the monitor's internal electronics against short circuits.

• Weather- and dirt-protected SAE connection system — Includes a robust rubber sealing cap and protective shroud to shield the SAE connectors from water, mud, and dust during outdoor use.

• Rated for –40 °C/°F — Built to withstand extreme cold weather, the premium cable insulation remains completely flexible even in below-freezing environments.

What’s in the Box

• 1 × OptiMate MONITOR O-124 battery monitor lead (1/4"-5/16" Ringlets to SAE, 60 cm)

• Integrated 15A inline fuse

• Weather-proof rubber sealing cap for the SAE connector

Warranty

• 3-year limited replacement warranty