PROMARINER 12073 Battery Isolator Alternator Amplifier ALTERNATOR/3 Batteries 70-AMP

( Brand: Promariner ), ( Manufacturer Part Number: 12073 ), ( Part Type: Battery Alternator Amplifier )

Review PROMARINER Multi Battery Isolator Alternator/3 Batteries Amp fits 1970

Introducing the Promariner 12073 Battery Isolator Alternator, a versatile and powerful solution for managing the charging system of your three-battery setup on your marine vessel. This isolator, engineered by Promariner, a trusted name in marine electrical components, is designed to ensure each of your batteries is charged efficiently and effectively.

The Promariner 12073 is a 70-amp three-battery isolator alternator, meticulously crafted to deliver optimal performance in marine applications. It features three individually isolated output circuits, each capable of charging a separate battery bank. This design ensures that each battery bank receives the charge it needs without the risk of overcharging or cross-contamination.

This advanced battery isolator alternator is equipped with a high-efficiency charging algorithm that automatically adjusts the charging voltage and current to suit the specific battery type and temperature. This adaptive charging ensures that your batteries are always charged efficiently, extending their lifespan and ensuring optimal performance.

The Promariner 12073 is designed with a rugged marine-grade construction, featuring corrosion-resistant stainless steel terminals and a durable powder-coated aluminum housing. This ensures the isolator can withstand the harsh marine environment, providing reliable operation year after year.

Additionally, the isolator alternator is equipped with a convenient LED indicator, which illuminates to display the charging status for each battery bank. This feature allows you to easily monitor the charging process and identify any potential issues.

The Promariner 12073 Battery Isolator Alternator is a must-have component for any marine electrical system, ensuring efficient and effective charging of your three-battery setup. With its advanced charging algorithm, rugged construction, and easy-to-use LED indicators, this isolator alternator is the perfect choice for maintaining the health and longevity of your marine batteries.

The Promariner 12073 Battery Isolator Alternator is a device designed to charge and maintain three 12-volt batteries while preventing overcharging and ensuring optimal battery health. Here are some pros and cons of buying this particular model:

1. Three-Stage Charging: The Promariner 12073 offers a three-stage charging system, which includes bulk, absorption, and float stages, enabling efficient and effective battery charging.

2. Compatibility: This isolator alternator can work with various battery types, including flooded, AGM, and gel batteries.

3. Automatic Voltage Regulation: This feature ensures that the output voltage of the charging system remains constant, preventing overcharging and extending battery life.

4. Separate House and Starting Banks: The Promariner 12073 isolates the house and starting batteries, allowing each bank to charge independently while keeping them isolated during engine operation.

5. Easy Installation: With a straightforward wiring setup, the installation process for this battery isolator alternator is relatively simple.

1. Size and Weight: The Promariner 12073 is a larger and heavier unit compared to smaller battery isolators, which may require additional mounting space and more robust installation.

2. Price: This battery isolator alternator is priced higher than some competitors in the market, which could be a deterrent for some buyers.

3. Fuse Protection: Some users have reported issues with the fuse protection feature, requiring an additional fuse block or upgraded fuses for optimal performance.

In conclusion, the Promariner 12073 Battery Isolator Alternator offers several advantages, such as three-stage charging, compatibility with various battery types, and automatic voltage regulation. However, it may require additional mounting space, be more expensive than some competitors, and have issues with fuse protection.

Based on the pros and cons, it is recommended for boat owners with larger battery banks and the need for a reliable, efficient charging system. This battery isolator alternator is an excellent investment for those seeking to maintain optimal battery health and extend battery life. However, for smaller battery setups or those on a tight budget, there may be more affordable options available in the market.

Details:

Item: Battery Isolator - 2 Alternator 3 70 AMP. Rated for use with DC devices ranging from 10 amps to 70. ProMariner Battery Isolator with gold-plated terminals and improved efficiency, provide enhanced charging. Condition: New.

part #: 12073 prices

• $208.33-$216.99

specifications boatcoveracc:

• for years: 1970
• brand: Promariner
• mpn: 12073
• part type: Battery Alternator Amplifier

offer boatcoveracc:

• availability: In Stock
• started: June 6, 2026
• options: Ship-to-home
• sold: 0

payments boatcoveracc:

• credit card: Visa
• other
• wallet: Google-pay

returns boatcoveracc:

• policy: Returns Accepted
• paid by: Seller
• time: 30 Days

general boatcoveracc:

• Boat Parts > Accessories Gear > Covers
• condition: New

seller boatcoveracc:

• rating: 99.0%
• city: Wheeling, IL
• # reviews: 113171

shipping boatcoveracc:

• cost: $0.00
• transit: 11-19 Days
• type: Fixed
• class: Economy
• service: Economy