Description
ProMariner 70A Battery Isolator 1-Alt 3-Batt | Boat Supply Store
Prevent critical starting battery discharge on your vessel by independently managing charging for up to three distinct battery banks from a single alternator. This ProMariner 70 AMP Battery Isolator employs a solid-state design, offering improved charging efficiency over conventional diode isolators. Its gold-plated terminals ensure superior conductivity and resistance to marine environment corrosion, making it a robust solution for vessels with extensive electrical loads, such as offshore fishing platforms or cruising catamarans operating off the Gulf Coast.
Key Features
- Independent charging for up to 3 batteries from a single alternator
- Superior conductivity and corrosion resistance via gold-plated terminals
- Efficient power distribution preventing starting battery drain
- Robust 70 AMP continuous current rating for demanding systems
- Reliable solid-state technology for long-term performance
- Simplified installation for dedicated battery management
- Protected starting battery ensures reliable engine ignition
- Extended accessory operation from dedicated house batteries
Specifications
| Product Specifications | |
|---|---|
| Alternator Input | 1 |
| Battery Outputs | 3 |
| Amp Rating | 70 AMP |
| MPN | 11073 |
| Terminal Type | Gold-plated |
Who This Is For
Boat owners operating a single-alternator charging system who require independent charging for multiple battery banks. Ideal for users looking to safeguard their starting battery from parasitic loads of house electronics and accessories.
How It Compares
| Feature | ProMariner 70A Battery Isolator 1-Alt 3-Batt | Competitor |
|---|---|---|
| Alternator Input | 1 | 1 | 1 |
| Battery Outputs | 3 | 2 | 2 |
| Amperage Rating | 70A | 120A continuous | 70A continuous |
| Terminal Type | Gold-plated | Tin-plated copper studs | Tin-plated copper |
| Operation Type | Passive Isolator | Automatic Charging Relay (ACR) | Digital Voltage Sensitive Relay |
Common Concerns Answered
Installation seems complex. Can I do this myself?
The ProMariner 11073 requires basic electrical wiring knowledge (InstallDifficulty: 3). This involves correctly connecting the alternator output and individual battery terminals. Refer to the manual for detailed diagrams. If unsure, professional marine electrical installation is recommended to prevent system damage.
I wish this had automatic switching like a relay.
This unit is a passive isolator, designed for simpler integration and cost-effectiveness. While it doesn't offer automatic switching, its primary function is to prevent the starting battery from being drained by house loads, a critical requirement for reliable engine starts, which it excels at. For automatic switching, consider a Voltage Sensitive Relay (VSR) or Automatic Charging Relay (ACR).
Are there any common issues users report?
Customers generally praise the ability to charge multiple batteries and the product's build quality. Installation complexity is noted for beginners. For optimal performance, ensure all connections are secure and properly insulated according to marine electrical best practices.
Frequently Asked Questions
What is a battery isolator and why do I need one?
A battery isolator is an electrical device that uses diodes to prevent current from flowing between multiple batteries, allowing each battery to be charged independently by a single alternator. You need one to ensure your primary starting battery remains fully charged and capable of starting your engine, even when house loads (like electronics, lights, or refrigerators) are drawing power from a separate battery bank.
How does the ProMariner 11073 battery isolator improve charging efficiency?
This isolator utilizes a solid-state design that minimizes voltage drop compared to basic diode isolators, ensuring more of the alternator's output reaches each battery. This leads to faster and more complete charging cycles for all connected battery banks.
Can this battery isolator be used with different types of batteries?
While the ProMariner 11073 is designed for efficient charging, it is generally compatible with most common marine battery types including lead-acid (flooded, AGM, gel). However, always consult your battery manufacturer's specifications for specific charging requirements, especially for advanced lithium-ion chemistries, which may require specialized charging systems.
What is the maximum amperage this isolator can handle?
The ProMariner 11073 Battery Isolator is rated for a maximum continuous current of 70 AMP, making it suitable for alternators and charging systems within this capacity. It is designed to handle DC devices from 10 to 70 amps.
Is this isolator suitable for a 1 alternator, 3 battery system?
Yes, this ProMariner Battery Isolator is specifically designed for a 1 alternator input and provides 3 individual battery outputs, making it an ideal solution for a 1 alternator, 3 battery system.
