TECMATE OptiMate™ Lithium Battery Monitor — 12V, 610mm (24"), SAE plug

Keep your lithium starter battery monitored with a permanent lead that reports battery status and checks the vehicle charging system.

• Monitors stored battery charge and confirms charging system operation.
• Two automatic modes: battery level monitor (single LED blink) and charging system test (arrow mode).
• Three LEDs indicate full-to-empty range for 12.8/13.2V lithium chemistries; a fourth LED warns of overcharge.
• Charge level LED blinks every 10 seconds with ultra-low long-term draw.
• Charging system arrow activates when charge reaches the effective lithium charge range of 14.2–14.5V.
• Weatherproof charge port with sealing cap for a secure connection.

Simple, low-draw monitoring that helps extend battery life and diagnose charging faults. ⚡