Troubleshooting Guide: SHARK™ BI-DIRECTIONAL DC-DC CHARGER

Overview

To accurately diagnose and resolve charging issues within your ABYSS® battery system, it is critical to gather detailed system information upfront. Whether you are running a single charger or a complete INFINITE™ Series setup, the data below allows our support team to identify the root cause quickly and provide precise solutions.

Providing incomplete or inaccurate information can delay troubleshooting and lead to unnecessary back-and-forth communication.

Information Required for Troubleshooting

Please review and provide the following details before contacting support:

1. Product Scope

• Are you using a single charger or a complete system (e.g., SHARK™ DC-DC charger, SEAL™ battery, full INFINITE™ system)?
• List all ABYSS® components currently installed.

2. Starting Battery Setup

• Battery type (Lithium, AGM, Lead-Acid, etc.)
• Battery capacity (Ah rating)
• Number of starting batteries installed
• Configuration (parallel, isolated, or other)

3. House Battery Setup (If Applicable)

• Do you have a dedicated house battery bank?
• Battery type and capacity
• Connection setup:
  • Connected to one or multiple starting batteries?
  • Managed through:
    • Battery Switch (BSW)
    • Voltage Sensitive Relay (VSR)
    • Other system

4. MDX / DC-DC Charger Connection

• Which battery is the MDX (SHARK™ DC-DC Charger) connected to?
• Confirm proper installation points (input/output sides).

5. Wiring Condition

• Are all system connections:
  • Fully installed
  • Tight and secure
  • Free of corrosion or damage

Loose or improper wiring is one of the most common causes of charging issues.

6. Issue Timeline & Usage Details

• When did the issue first occur?
• Installation date of the system
• Total time in use
• Typical usage:
  • Engine runtime
  • Load conditions (electronics, trolling motor, etc.)
• Description of the issue:
  • What exactly is happening?
  • Which product is affected?

7. Charging Equipment

• Do you have a 12V AC-to-DC charger connected?
• Do you have a 36V AC-to-DC charger connected?
• List charger brands and models if possible.

8. Voltage Measurements (Critical)

Using a voltmeter, provide:

• Starting battery voltage
• 36V battery (or system) voltage

Then confirm:

• Do these readings match what is shown in the ABYSS® app?

Voltage discrepancies are a key indicator of system or wiring issues.

Why This Information Matters

Modern marine electrical systems are interconnected. A charging issue is often not isolated to a single component—it can stem from:

• Battery configuration
• Charger setup
• Wiring integrity
• System load behavior

Providing complete system details allows for faster, more accurate troubleshooting and ensures your system performs as designed—reliable, consistent, and ready for offshore conditions.

Pro Tip

Before submitting a support request, double-check:

• All connections are tight
• Batteries are properly configured
• Voltage readings are verified with a physical meter

This alone resolves a surprising number of issues.