Mastervolt Charge Mate Pro 90

The Charge Mate Pro 90 is an advanced electronic charge relay designed specifically for marine and boating applications. It ensures efficient and reliable distribution of charging current between multiple battery banks, safeguarding your starter battery while maintaining optimal performance of your onboard electrical systems.

Key Features

• Charges two battery banks from a single power source.
• Electronic charge coupling with minimal voltage drop.
• Enables effective dual charging for enhanced battery management.
• Compatible with all battery types, including Lithium-Ion.
• Charge current for the secondary battery limited to 40 or 90 A.
• Prioritizes charging of the main battery for high system reliability.
• Unidirectional design blocks return current under all conditions.
• Prevents power dips in the onboard electrical network.
• Compatible with all types of chargers and alternators.
• LED status indicators for easy monitoring.
• IP65-rated electronics housed in a corrosion-resistant casing with aluminum heat sinks.
• Quick and straightforward installation process.

Applications

Ideal for leisure and professional marine and mobile setups, the Charge Mate Pro 90 is perfect for vessels with high power demands and the need for prioritized or current-limited charging. Common applications include:

• Connecting a bow thruster battery to a service battery.
• Managing multiple battery banks on boats and yachts.
• Ensuring reliable power distribution for onboard electrical systems.

Technical Specifications

Specification	Details
Output Current	Limited to 90 A; derates above 25°C
Battery Outlets	2
Input Voltage Range	9-32 V
Battery Voltage Detection	Automatic 12/24 V
Remote Switch Functions	On, Off, Auto, Start to Assist
Dimensions (HxWxD)	157 x 140 x 80 mm / 6.2 x 5.5 x 3.1 inches
Weight	0.88 kg / 1.9 lb
Compliance	CE

Technical Details

• Connection Options: 3 x faston connectors for switch, ground, and status. Includes support for an optional single-pole ON-OFF-ON switch and an optional LED indicator.
• Power Consumption: Less than 1 mA when switch is open at 12/24 V DC.
• Battery Types: Compatible with all types, including Lithium-Ion with protection via Multipurpose Contact Output (Product Code: 77030500).
• Switch On Voltage: 13.5 V (for 12 V systems) / 27 V (for 24 V systems).
• Switch On Delay: 5 seconds.
• Switch Off Voltage: 12.75 V (for 12 V systems) / 25.5 V (for 24 V systems).
• Switch Off Delay: 2.5 seconds.
• Relay Type: Electronically controlled MOSFETs with a maximum voltage drop of 0.2 V.
• Operating Temperature Range: -40°C to 60°C (-40°F to 140°F).
• Protection Rating: IP65, ensuring resistance against dust and water.

Marine Application Example

Consider a boat equipped with a bow thruster battery and a service battery. The Charge Mate Pro 90 ensures that the service battery receives charging priority, maintaining its charge level even when the boat's electrical demands increase. By blocking the return current from the bow thruster battery, it guarantees that the thruster battery remains charged and prevents power dips that could affect other onboard systems.

Why Choose Charge Mate Pro 90?

The Charge Mate Pro 90 surpasses traditional mechanical charge relays by offering precise electronic control, reducing voltage drops, and providing superior protection against reverse current. Its robust design, coupled with easy installation and high reliability, makes it the ideal choice for marine enthusiasts looking to optimize their vessel's electrical system.

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit P65Warnings.ca.gov.

Orders of physical products placed by 3 PM EST M-F typically ships the same day, if all requested items are in stock. Weekend orders will typically ship on Monday.

Shipping takes 2-7 days.

We currently ship to the Contiguous 48 States.

Life of Sailing merch is custom made for the customer after an order is placed. Total turnaround is typically 7-14 days from order to doorstep.