1. Starters, Alternators, ECUs & Wiring Offers
  2. sku: 8904228583082604
  3. AFEISOL 20225321

AFEISOL 20225321 Isolator Relay Mobile Audio Power Amplifier 500-AMP Battery 500BATTERY

fits model: Marine, 500, Road.

20225321 Afeisol 500 Amp Battery Isolator And Relay For Marine Mobile Audio Off-road Power

( Brand: Afeisol ), ( Part Type: Amplifier Battery ), ( Included Components: Mobile Audio Relay ), ( Measurement System: Inch ), ( Contact Material: Copper Zinc ), ( Contact Type: Normally Open ), ( Specification Met: No ), ( Connector Type: Screw ), ( Input Voltage: 12.0 ), ( Current Rating: 500.0 ), ( Manufacturer Part Number: 20225321 ), ( Operation Mode: Automatic ), ( Mounting Type: Screw Mount ), ( Package Dimensions Lxwxh: 5.24x4.21x3.31 Inches ), ( Weight: 1.79 Pounds )

Review AFEISOL 2022 5321 500battery Isolator And Relay Mobile Audio Off road Power fits ROAD MARINE 500

The AfeiSol 20225321 500A Battery Isolator Relay is a versatile and essential accessory for marine, mobile audio, and off-road power applications. This relay ensures the safe charging and use of secondary batteries without draining the primary battery.

The relay is designed with a robust 500-ampere capacity, making it suitable for powering demanding systems such as marine engines, heavy-duty audio equipment, or off-road lighting. Its heavy-duty construction features a die-cast aluminum housing that provides excellent heat dissipation and durability.

The AfeiSol 500A Battery Isolator Relay comes with a built-in voltage sensing feature that automatically switches between the primary and secondary batteries based on their voltage levels. This intelligent design ensures that the primary battery is only used when necessary, preserving its charge and extending its lifespan.

The relay features four easily accessible terminals for quick and secure connection of the primary and secondary batteries, as well as the load and ignition sources. The terminals are labeled for easy identification, and their large size allows for the use of standard battery cables.

Additionally, the AfeiSol 500A Battery Isolator Relay includes a diagnostic LED indicator that displays the status of the system. The green LED indicates that the secondary battery is charging, while the red LED indicates a fault or issue that requires attention.

This reliable and efficient battery isolator relay is an essential component for any marine, mobile audio, or off-road power system that requires the use of a secondary battery. Its rugged construction, high capacity, and intelligent design make it a valuable investment for those who demand the best performance and reliability from their power systems.

The AFEISOL 20225321 500A Battery Isolator Relay is a device designed to manage electrical power distribution in various applications, including marine, mobile audio, and off-road power systems. This relay isolates the starting battery from the accessory battery, preventing the discharge of the starting battery when accessory loads are drawn. Here are some pros and cons of buying this particular model:

Pros:

1. High current capacity: With a 500A rating, this isolator relay can handle heavy loads, making it suitable for larger marine or off-road power systems.

2. Marine-grade construction: The relay is designed to withstand harsh environments, with features such as waterproof connectors and corrosion-resistant materials, ensuring longevity in marine applications.

3. Manual override: The ability to manually switch between the starting and accessory batteries is a useful feature, providing flexibility when charging or maintaining the batteries.

4. Easy installation: The relay comes with clear instructions and a simple wiring diagram, making installation a relatively straightforward process for most users.

Cons:

1. Size and weight: The larger size and weight of this isolator relay may require additional space and mounting hardware, which could add to the overall cost and complexity of the installation.

2. Limited compatibility: The relay may not be suitable for all types of battery systems or charging configurations, so it is essential to check the compatibility with your specific setup before purchasing.

3. Lack of advanced features: While basic in design, the AFEISOL 500A Battery Isolator Relay does not offer advanced features such as temperature sensors or automatic charging system integration.

Conclusion:

The AFEISOL 20225321 500A Battery Isolator Relay is a robust and reliable solution for managing electrical power distribution in marine, mobile audio, and off-road applications. Its high current capacity, marine-grade construction, manual override function, and easy installation make it an attractive option for users requiring a straightforward isolator relay. However, its larger size and weight, limited compatibility, and lack of advanced features are factors to consider before making a purchase.

Recommendation:

If you have a power system that requires a high current capacity and is suitable for this isolator relay, and you're looking for a simple and reliable solution to manage power distribution, the AFEISOL 20225321 500A Battery Isolator Relay could be a good choice. However, if you need advanced features, compatibility with specific charging systems or battery configurations, or a smaller and lighter device, you may want to explore other options. Always ensure you check the compatibility of the relay with your specific application before purchasing.

part # 20225321 prices

  • $43.04-$44.41

specifications wiringwench:

  • for models: Marine, 500, Road
  • brand: Afeisol
  • part type: Amplifier Battery
  • included components: Mobile Audio Relay
  • measurement system: Inch
  • contact material: Copper Zinc
  • contact type: Normally Open
  • specification met: No
  • connector type: Screw
  • input voltage: 12.0
  • current rating: 500.0
  • manufacturer part number: 20225321
  • operation mode: Automatic
  • mounting type: Screw Mount
  • package dimensions lxwxh: 5.24x4.21x3.31 Inches
  • weight: 1.79 Pounds

general wiringwench:

  • Car Truck Parts Accessories > Starters, Alternators, ECUs Wiring > Other Starters, Alternators, ECUs Wiring
  • condition: New

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returns wiringwench:

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

shipping wiringwench:

  • service: FedEx Ground / FedEx Home Delivery
  • carrier: FedEx
  • class: Standard
  • type: Fixed
  • cost: $0.00
  • transit: 6-11 Days

offer wiringwench:

  • quantity: 2
  • options: Ship-to-home
  • sold: 0
  • availability: In Stock
  • started: October 11, 2025

seller wiringwench:

  • rating: 96.5%
  • # reviews: 646
for models: marine, 500, road, part type: amplifier battery, included components: mobile audio relay, measurement system: inch, contact material: copper zinc, contact type: normally open, specification met: no, connector type: screw, input voltage: 12.0, current rating: 500.0, operation mode: automatic, mounting type: screw mount, package dimensions lxwxh: 5.24x4.21x3.31 inches,
category: auto parts > car truck parts accessories > starters, alternators, ecus wiring, weight: 1.79 pounds, sku: 8904228583082604,
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