A battery isolator kit is a device that is used to isolate and protect electrical circuits from each other. It is an essential component for any vehicle that uses dual battery systems, such as boats, RVs, and cars. A battery isolator kit is made up of several parts, including a switch, a fuse, and a grounding strap.
The switch connects one wire from one battery to another, while the fuse provides an extra layer of protection in case of a power surge. The grounding strap connects the battery isolator kit to the ground on your vehicle.
The main purpose of a battery isolator kit is to protect your primary and secondary batteries from each other. If one battery starts to lose power, the isolator kit will prevent the other battery from consuming power from the primary battery. This is especially important in dual battery systems, where one battery can be critically low and cause the other to lose power as well.
Why should you buy a battery isolator kit?
A battery isolator kit is an essential tool for any vehicle owner that uses multiple batteries. It allows you to safely and efficiently use multiple batteries to power different components of your vehicle, while also protecting them from one another. It also includes a protection circuit that prevents the batteries from becoming overloaded. This ensures that your vehicle is able to operate safely and efficiently, even when using multiple batteries.
If you’re looking for an isolator kit that’s compatible with your vehicle, be sure to check out our top 5 list. We have ranked kits that are compatible with most vehicles, and we also have mentioned their features and specs. Go through and choose the one that fits your needs the best.
List of top 5 battery isolator kits in 2023
1. VEVOR Automatic Dual Battery Isolator Kit, 6mtr 12V
VEVOR Automatic Dual Battery Isolator Kit stands at the top position on our list because of its impeccable features, accessories that come along with the kit and a price tag that is very economical.
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Features and performance of VEVOR Automatic Dual Battery Isolator Kit, 6mtr 12V
Isolates dual battery: This isolator is designed to make sure that your primary battery always remains charged by cutting in at 13.3V and cutting out at 12.8V. This in turn makes sure that you will never have a problem starting your vehicle due to battery down. Also, it is capable of charging two batteries at once, while isolating them when the engine is turned off.
Easy installation: The kit comes with every accessory needed to install the isolator. There is no need to purchase anything extra. Just follow the instructions in the booklet and you’ll be done in minutes.
High quality and durable relay: The split charge relay of VEVOR isolator is made up of premium plastic, meaning shock and dustproof. Also, this material is known for its strength and durability, so, you can have a piece of mind when have it around on your outdoor adventures.
IP65 waterproof relay: It means, relay, which is voltage sensitive, is IP65 waterproof. This in turn means, that the isolator can work securely even in inclement weather conditions and is capable of sustaining dusty and wet conditions.
• Model: JDQTJ-6M
• Rating Voltage: 12V DC
• Continuous Current: 140A
• Intermittent Current: 160A
• Cut-in Voltage: 13.3V
• Cut-out Voltage: 12.8V
• IP Rating: IP65
• Material: Nylon Plastic
• Power Studs: M6 Stainless Steel
• Operation Temperature Range: -30 to 105℃ / -22 to 221℉
• Item Dimensions(L x W x H): 2.66 x 2.11 x 2.66 in / 6.76 x 5.36 x 6.76 cm
• Net Weight: 4.14 lbs / 1.88 kg
Pros
• All-included kit for installation
• Highly durable and IP65 water proof relay
• Easy installation
• Wallet friendly
2. KeyLine Chargers Isolator – VSR Pro Dual Battery Kit (140 Amp)
If there is any isolator that is close to VEVOR in perfection it is Keyline isolator. It helps you keep the output of the amperage up, which is a no mean achievement for a solid state device. It is equipped VSR with an efficient VSR, which has 13.3V cut-in and 12.8V cut-out limits. It means that it will keep your primary battery charged perfectly at all times.
Features and performance of KeyLine Chargers Isolator – VSR Pro Dual Battery Kit (140 Amp)
Dual battery charging with single isolator: This 140 Amp Dual Battery Isolator is designed to offer a complete solution for charging two batteries. It is capable of separating the power sources of the two batteries, even if you are using only one alternator.
Small in size: This isolator was designed to be extremely small, so that it can be installed in any space desired. It is only 2.6 x 2.6 x 2 inches, which makes it the perfect size for any application.
IP65 waterproof: This isolator is IP65 certified and is a great for both on and off-road use. Meaning you can pretty much use it even in rain and dust. However, it isn’t designed for marine needs or submersions.
Well protected: Its rigid construction and thick cables make sure that the isolator is well protected and remains connected even on uneven roads.
• Measurements: 2.6 x 2.6 x 2 inches
• Cut-in voltage: 13.3V
• Cut-out voltage: 12.8V
• Amperage: 140 Amps
• Battery terminals: Brass marine type
• Warranty: 1 year
Pros
• Smaller size
• Rigid cables for better protection
• IP65 waterproof certified
• Easy to install
3. Blue Sea Systems Add-A-Battery Kit (120 Amp)
The isolator allows you to add a second battery to your vehicle without the hassle of complicated wiring. This kit uses a dual circuit plus battery isolator to ensure that both batteries are safely protected from each other in the event of a battery failure. The kit includes everything you need to install the isolator, including alligator clips, wire connectors, and an instruction booklet.
Features and performance of Blue Sea Systems Add-A-Battery Kit (120 Amp)
Automatic charging relay: This 12/24 Volt SC 120 Amp Automatic Charging Relay is designed to either separate batteries from each other during engine start-up or combine them during charging.
Charges two batteries with one alternator: The 65A ACR from Blue Sea Systems is a great way to conveniently charge a pair of batteries from just one engine alternator.
Easy to operate: The unit is designed with an easy-to-understand control interface and a 120-amp capacity to quickly charge two batteries.
Compact in size: The ACR is compact and fits easily in the engine compartment, making it a popular choice for boat owners who want to keep their batteries charged and ready for use.
• Components material: Tin-plated copper studs
• Protection: IP67 waterproof
• Battery component: 2.5 x 4 x 0.5-inches
• Starter component diameter: 4 inches
• Battery: E-series dual circuit battery
Pros
• Greater efficiency
• IP67 waterproof (submersion up to 2 ft)
• Dual battery charging from single alternator
• Easy to understand interface
4. WirthCo 20092 Battery Doctor (125/150 Amp)
This dual battery controller is a good choice for vehicles that have an auxiliary battery. The Battery Doctor is smaller and more lightweight than other similar controllers, which likely speaks of its expertise in automotive industry. It features a 120 amp output, which is more than enough to power most accessories. Additionally, it has an LED battery level indicator and an automatic shut-off feature to prevent overcharging.
Features and performance of WirthCo 20092 Battery Doctor (125/150 Amp)
Compact and light weight: The unit is very small in size and weighs less than one pound. So, it can pretty much anywhere in your vehicle.
IP62 waterproof: This not very high rated, but good enough to protect the relay from rain and dust.
Manual override: With this isolator, you have the option to manually override the normal routine and charge your secondary battery first and the start-up battery next.
One push swap: With one push of the swap button, you can swap the batteries to parallel mode so you can use it for jump starting your vehicle.
• Isolator size: 5.1 x 5.7 x 2.3-inches
• Weight: 1 pound
• Protection: IP62 waterproof
• Mounting bracket: 4 x 4 x 2-inch
Pros
• Compact and lightweight
• LED indicator and automatic shut-off
• Manual override
• Surge and over current protection
5. The AOPEC Dual Battery Isolator Kit is a reliable 12V 140Amp
This isolator is designed to provide a safe and efficient way to charge and maintain two individual batteries while isolating them from each other. Constructed from high-quality materials and designed for use with lead acid, and NiCad batteries, the isolator features 2 independent charge ports.
Features and performance of AOPEC Dual Battery Isolator Kit is a reliable 12V 140Amp
Safety protection: It comes with a protective design that can withstand sudden surge and voltage raise. It can also protect your battery from sudden spikes in the current supply.
Efficient charge distribution: AOPEC has a battery that is capable of distributing the charge equally between both batteries. It connects them during charging and disconnects them while discharging.
Priority Charging: It gives priority to the primary battery and avoids it getting drained when engine is off. This ensures that you will never have starting issues due to a discharged battery.
IP65 weatherproof: The isolator is IP65 certified. It has a housing made of durable plastic and the box is sealed with a silicone layer from inside. So, no water, dust or sand can enter inside to damage it.
• Model no: DBKR12140B-T
• Material: Plastic
• Current rating: 140 amps
• Voltage: 12 V
• Dimensions: 31 x 22.2 x 7.7 cm
• Weight: 1.93 Kg
Pros
• Safety protections against sudden spike in voltage, current, etc
• IP65 weatherproof
• Even charging with primary as priority when engine’s off
• Internal silicone layer protection
• 2 years warranty
Our experts have reviewed many outdoor battery isolator kits before preparing this top 5 list. We have ranked VEVOR battery isolator kit as number one because of its value for money. Economically priced, this kit offers all the features that a high-end brand offers.
Though blue sea systems and KeyLine come closer to what VEVOR has to offer, they are a bit expensive. On the other hand, Wirthco and AOPEC are economical and are great for the vehicle owners who seldom need heavy duty.
Different types of battery isolator kits
There are various types of battery isolator kits, below mentioned are a few of them.
Two-Battery Isolator Kit – This type of kit is designed to manage two batteries in one system. It is ideal for vehicles that require extra power, such as vehicles that frequently travel in inclement weather and vehicle that require constant power like motor-homes.
Four-Battery Isolator Kit: This type of kit is designed to manage four batteries in one system. It is ideal for vehicles that require extra power, such as boats and RVs.
High-Amp Battery Isolator Kit – This type of kit is designed for high-amp applications, such as powerful audio systems or winches. It is ideal for vehicles that require extra power, such as boats and RVs.
Low-Amp Battery Isolator Kit – This type of kit is designed for low-amp applications, such as audio systems or small appliances. It is ideal for vehicles that do not require extra power, such as cars and trucks.
Solar Battery Isolator Kit – This type of kit is designed to manage solar batteries. It works in the similar way as a normal isolator and is best suited use in cars and vehicles powered by solar energy.
What should you look for when buying a battery isolator kit?
There are many things you should look at, but the most important of them are:
1. Durability: The battery isolator kit should be made from durable materials, so it can last long.
2. Ease of use: The battery isolator kit should be easy to use, so you don’t have to spend a lot of time trying to figure out how it works.
3. Capacity: The battery isolator kit should be able to protect a large number of batteries at once.
4. Price: The battery isolator kit should be affordable, so you can protect your batteries without breaking the bank.
5. IP rating: The battery isolator kit should have an IP rating of 65 or above, so it can protect your batteries from being damaged by water or dust.
6. Compatibility: Make sure the battery isolator kit is compatible with your vehicle’s make and model. Many kits are designed for specific vehicles, so be sure to get the one that fits your vehicle.
7. Installation process: Be sure to read the instructions carefully before starting the installation process. Many kits require you to remove parts of your vehicle in order to install them, so be prepared for that.
8. Test the battery: Be sure to test the battery isolator kit before you install it in case there are any issues.
When buying a battery isolator kit, be sure to take into account the factors listed above. By following these tips, you’ll be able to install the kit safely and ensure that it’s effective in protecting your battery.
Are battery isolator kits worth it?
Battery isolator kits are an important piece of equipment for any vehicle with two or more batteries. They are designed to isolate the batteries from each other, allowing one battery to be used for starting the engine and the other batteries to be used for electrical accessories. If one battery fails, the isolator kit will protect the remaining batteries from being damaged.
For instance, take VEVOR Automatic Dual Battery Isolator Kit, 6mtr, 12 V, it so versatile that it can fit into almost any vehicle and its features are second to none. For the price you are paying, the kind of service this durable device can provide and the way it can protect your starter battery is many a fold your investment. I would not hesitate to buy it!
Write FAQs about battery kit isolator
Q: What are the benefits of using a battery isolator kit?
A: The benefits of using a battery isolator kit include the prevention of overcharging and discharging, as well as the prevention of battery damage. Additionally, a battery kit isolator can help to improve the longevity of your batteries.
Q: What are the different types of battery isolator kits?
A: There are a variety of different types of isolators, including circuit board isolators, thermal cut-off isolators, and pressure relief isolators. Each type of battery kit isolator has its own unique features and benefits, which should be considered before purchasing a device.
Q: Is a battery kit isolator necessary?
A: While there are many benefits to using a battery kit isolator, it is ultimately up to the individual to decide whether or not to purchase one. However, for most vehicle owners it is an absolute necessity.
