10 Best Battery Isolator of December 2025

• 200 AMP Battery Isolator and Relay
• Prevents primary battery discharge
• Maximum current transfer
• Extends battery life
• Universal 12V Applications

STINGER

• The ONLY 100% UTV designed Battery Isolator Avaliable w/PEP
• Smaller
• Smarter
• Stronger
• Industry's simplest installation

True Amalgamated

• Mobile Audio Relay and Battery Isolator. Great for isolating a second batter making it dedicated to the stereo system
• Does not create a voltage drop to the second battery like conventional isolators
• 500 Amps at 12V Continuous Power Handling. 700 Amps Surge Power Handling
• Switching Power: 10 - 16 VDC
• Draws Less Than 1 Amp When On

NVX

• Mobile Audio Relay and Battery Isolator
• Great for isolating a second battery making it dedicated to the stereo system
• Does not create a voltage drop to the second battery like conventional isolators
• 200-Amps at 12-volt Continuous Power Handling
• Draws Less Than 1-Amp When On

PAC

• 500 AMP High Current Relay/Isolator
• Prevents primary battery discharge
• Power on demand
• Extends battery life
• Universal 12 volt applications

STINGER

• Eliminate multiple battery losses—when there are two battery banks in the charging system, they can be charged and used separately to eliminate multi-battery loss.
• Easy-to-use independent charge and discharge control: Isolate each battery circuit and allow each battery to discharge and charge according to your needs
• Solid system, efficient, and reliable—Solid system works reliably, no contact, no spark, long life, no noise, no electromagnetic interference, fast switching speed
• Anode aluminum radiator for heat dissipation, safe and durable—The surface is not electrically conductive, which is also a function of circuit protection. Not easy to oxidize and corrode, can extend life
• Sealed Well—To prevent oil, natural gas, salt, water, and harsh environments
• Compatible with lead-acid pure Gel deep cycle AGM Battery

Renogy

• DUAL BATTERY ISOLATOR KIT - enables your accessories to run from a separate battery while the engine is not running on your vehicle while keeping your main battery charged and your vehicle always ready to go and start when you want it to. This dual battery isolator kit features 12 Volt 140 Amp Voltage Sensitive Relay Isolator and includes all the bits and pieces needed for a complete installation.
• FITS A WIDE VARIETY OF VEHICLES - Being the computer age that it is today, a lot of accessories, tools and gadgets that runs on electricity are essential in our everyday living or hobbies. This dual battery isolator kit with printed installation instruction manual gives you the power for your recreation without needing to worry about getting home after.
• COMPLETE KIT WITH PRINTED INSTALLATION MANUAL - This dual battery isolator kit manufactured by AA Ignition is a complete kit which includes the Isolator or Relay, battery Cables, battery terminals, copper lugs, heat shrinks, cable ties and a printed instruction manual.
• PREMIUM RUGGED CONSTRUCTION - This dual battery isolator kit is all you need to charge a dual battery system. It features a voltage sensitive chip ensuring your primary battery is always ready for your vehicle to run. This dual battery isolator is also built to withstand extreme weather environments, vibration and is water resistant.
• LIFETIME WARRANTY - This 12V 140 Amp dual battery isolator kit comes complete with a lifetime warranty. If the part ever fails on your Truck, SUV, RV, ATV, UTV or Boat simply contact us for a replacement. Avoid getting stucked after your recreation by purchasing this dual battery isolator kit from AA Ignition.

AA Ignition

• 80 AMP Battery Isolator and Relay
• Prevents primary battery discharge.80A constant 150A peak
• Maximum current transfer
• Extends battery life
• Universal 12V Applications

STINGER

• Water resistant (IP62) - suitable for marine use
• Priority charging for starting battery
• Automatically charges auxiliary battery
• Manual override for starting battery
• Over current and surge protected for vehicles with electronic systems

WirthCo

• 1-year warranty protects you after your purchase warranty protects you after your purchase protects you after your purchase
• 100% New aftermarket unit built to meet OEM specifications

Cole Hersee