KEYLINE CHARGERS ISO-PRO300-U Dual Battery Isolator Peak Amplifier 300-AMP Voltage 3001000

( Brand: Keyline Chargers ), ( Manufacturer Part Number: ISO-PRO300-U ), ( Part Type: Battery Amplifier ), ( Product Dimensions: 2.5 X 2.5 X 3 Inches; 13.76 Ounces ), ( Item Length: 2.5 ), ( Size: 300isolator )

Review KEYLINE CHARGERS Dual Battery Isolator Heavy Duty 3001000 Peak Voltage

The Keyline ISO-PRO300-U Dual Battery Isolator is a versatile and powerful device designed to manage and distribute power between two 12-volt batteries in various applications. With a peak voltage of 300 volts and a maximum current capacity of 300 amps, this isolator is well-equipped to handle heavy-duty power demands.

This isolator features an automatic transfer switch that ensures the primary battery is charged first while providing power to the secondary battery when necessary. The unit is built with a robust design, including a rugged die-cast aluminum housing, and is sealed against the elements with an IP65 rating. This makes it an ideal choice for use in harsh environments, such as off-grid systems, marine applications, or RVs.

The ISO-PRO300-U also includes a number of convenient features, such as a LED indicator light that displays the status of the device, and a built-in diagnostics function that helps identify and troubleshoot any issues. The isolator is compatible with a wide range of battery types, including flooded, AGM, and gel batteries.

Installation is straightforward, with the unit featuring easy-to-use screw terminals and clear instructions. Additionally, the ISO-PRO300-U comes with a 30-amp fuse and mounting hardware included in the package. With its robust design, automatic transfer switch, and convenient features, the Keyline ISO-PRO300-U Dual Battery Isolator is an essential tool for anyone looking to manage and distribute power between two batteries with confidence.

The Keyline ISO-PRO300-U Dual Battery Isolator is a device designed to manage and distribute power between two 12-volt batteries in various applications, such as RVs, boats, or off-grid systems. This isolator comes with several features that might be appealing to users, but it also has some potential drawbacks. Below, we'll discuss the pros and cons of buying a Keyline ISO-PRO300-U Dual Battery Isolator.

1. High Peak Voltage: The isolator boasts a peak voltage of 300V, which can help prevent battery damage from voltage spikes during engine starting or charging.

2. 300-Amp Capacity: This device can handle up to 300 amps, making it suitable for heavy-duty applications where a significant amount of power is required.

3. Automatic Voltage Sensing (AVS): The AVS feature allows the isolator to automatically switch between charging and floating modes based on the voltage of the source battery, ensuring optimal battery health.

4. Reverse Polarity Protection: The device comes with reverse polarity protection, which helps prevent damage caused by incorrect wiring connections.

5. Compact Design: The Keyline ISO-PRO300-U Dual Battery Isolator is relatively small and lightweight, making it an ideal choice for users with limited space.

1. Manual Switching: While the AVS feature is convenient, some users may prefer the option to manually switch between charging and floating modes, which this isolator does not offer.

2. No Mounting Brackets: The device does not come with mounting brackets or hardware, which means users will need to purchase them separately if they plan to mount the isolator.

3. Limited Voltage Range: The isolator is designed for 12-volt systems, so it may not be suitable for users with 24-volt or other voltage configurations.

In conclusion, the Keyline ISO-PRO300-U Dual Battery Isolator offers several advantages, including high peak voltage, 300-amp capacity, automatic voltage sensing, and reverse polarity protection. However, it does not provide manual switching, comes without mounting hardware, and is limited to 12-volt systems.

Based on the information provided, if you're looking for a dual battery isolator with a high peak voltage, automatic voltage sensing, and a compact design, the Keyline ISO-PRO300-U Dual Battery Isolator could be a suitable choice for your needs. However, if manual switching or a wider voltage range is essential, you might want to consider other options in the market.

Recommendation: The Keyline ISO-PRO300-U Dual Battery Isolator is recommended for users who require a reliable and compact 12-volt dual battery isolator with a high peak voltage and automatic voltage sensing.

Details:

This compact battery isolator was built ultra-small to fit almost any. Our 300-amp Dual Battery Isolator is the BEST charging solution for high capacity dual battery systems. Key line Chargers has the ONLY 300-amp Dual Battery Isolator on market. We made this High Amperage isolator for the person who wants to select their own wire and installation accessories.

A perfect fit under the hood or any to get close your batteries. This is only the isolator by itself with mounting screws and connecting post nuts bolts. The Keyline Chargers Pro HD Dual Battery Isolator is a voltage Sensitive Relay VSR that cuts in at 13.3 volts and out 12.8 to ensure your start battery always charged. The Keyline Dual Battery Isolator is the only unit designed with cutting edge programming to deliver optimum performance ZERO sacrifice.

Forget the traditional diode relays and so-called solid state devices that can rob you of almost 2 amps output power.

part #: isopro300 prices

• $179.99-$305.99

specifications secusammy:

• brand: Keyline Chargers
• mpn: Iso-pro300-u
• part type: Battery Amplifier
• product dimensions: 2.5 X 2.5 X 3 Inches; 13.76 Ounces
• item length: 2.5
• size: 300isolator

general secusammy:

• Vehicle Electronics GPS > Car Alarms Security > Relays Sensors
• condition: New

seller secusammy:

• city: Miami, Florida
• # reviews: 136
• rating: 100.0%

returns secusammy:

• policy: No Returns

shipping secusammy:

• class: Expedited
• cost: $0.00
• service: Expedited
• transit: 6-12 Days
• type: Fixed

payments secusammy:

• other
• wallet: Paypal
• credit card: Discover

offer secusammy:

• options: Ship-to-home
• started: October 10, 2025
• availability: In Stock
• quantity: 1
• sold: 0

Keyline Chargers ISO-PRO300 Is Similar To:

• Keyline Chargers Iso-pro300dbk Dual Battery Isolator Kit Heavy Duty 300 Amp 1000 Peak Voltage (95% similar) Key line Chargers has the only 300-AMP dual battery isolator on market. The Keyline dual battery isolator is the only unit designed with cutting edge programming to deliver optimum performance zero sacrifice. This compact battery isolator was built ultra-small to fit almost any. A perfect fit...(October 3rd, 2025)