Understanding the SHARK DC-DC Bidirectional Charger

The SHARK DC-DC Bidirectional Charger is a core component of the ABYSS INFINITE™ power ecosystem — intelligently managing power flow between your starter battery and your trolling motor battery based on real-world operating conditions.

This simple guide explains how the charger works, the LED indicator meanings, and how sleep mode conserves power when charging isn’t needed.

? Two-Way Smart Charging

The charger operates in two intelligent modes:

• Boost Charging Mode
  When your outboard engine is running, the charger pulls power from the 12V starter battery (alternator) and boosts it to charge your 36V trolling motor battery.

• Buck Charging Mode
  When your engine is off, the charger reverses flow — stepping down the voltage from the 36V trolling battery to maintain or charge the 12V starter battery and power other 12VDC loads onboard.

? Smart Sleep Mode

To conserve energy, the charger enters Sleep Mode when neither charging condition is met. In this mode:

• The unit wakes up every 2 minutes to check for valid voltages.

• If charging conditions are detected, it auto-resumes.

• Sleep mode draws ≤3mA — maximizing system efficiency when idle.

? LED Status Indicators

• Green (Solid): Buck Charging

• Green (Fast Flash): Boost Charging

• Green (Slow Flash): Standby, not charging

• Yellow (Fast Flash): Warning

• Red (Fast Flash): Fault Detected

• Off: Unit is off or in sleep mode

Pro Tip: You can also manually restart the unit to wake it from sleep.

This smart charger plays a vital role in ensuring your power system is always optimized — charging when it should, conserving energy when it shouldn't, and giving you clear status feedback every step of the way.