Best Car Battery Switches of 2025

"I put this on a car we do not drive much. It prevents the battery from running down. Even my wife can easily turn it on and off when needed. Great item! Works perfectly."

"I bought two of these, but unfortunately, neither worked after less than a month. I placed one in my old Camaro to avoid battery drainage, but it was completely ineffective. What a waste of money!"

"I found this item on Amazon last year and thought it would be just what I needed to make disconnecting my negative battery cable easier. Installation was very easy, and it has worked flawlessly since. I'm now a repeat buyer!"

"I had a huge problem: something was draining my car's battery even when the car was off. The dealership quoted me between a few hundred and $1000 to fix it. I was having to unhook my battery every time I shut off my car, which was a huge hassle! Then I found this device. My mechanic installed it for under $100, and now I just use the fob to turn my battery on and off. No more dead battery or hassle. It was easy to install and has been working for months. A huge problem solver!"

"I installed this battery disconnect device several weeks ago on my 2005 Dodge Dakota truck because the battery would die after a few hours. It just works! I still need to find the reason for the parasitic draw, but for now, I'm not getting stranded anymore. I recommend it if you have a good battery and alternator."

"I had a problem with parasitic drain on my battery in my Dodge Journey. My mechanic friend suggested a battery kill switch. He installed it and it works great. The instructions weren't very clear, but he figured it out quickly. It comes with two remotes, which is a real bonus. It can also protect my vehicle from being stolen. When activated, the car won’t start! The only downside is that I lose the time on the clock when disconnecting the battery, but I can live with that."

"I found the product to be very sturdy and easy to install in my vehicle. However, I recommend purchasing some conductive battery post shims because the male post might be a bit too narrow for my battery cable. Thankfully, I read a critical review beforehand and had the shims ready. Overall, it seems to be a great solution for my 1996 Jeep Grand Cherokee."

"As an owner of a 25-year-old Jeep, I was dealing with a terrible parasitic draw that often killed my battery overnight. I didn’t want to spend time diagnosing the problem, so installation of this switch was super simple and it fit my terminal perfectly. I suspect some customers may break it by overtightening."

"I appreciated the fast delivery of the switch, and it arrived well packaged. However, I faced an issue with the male part being too small in diameter for my battery cable. After contacting customer service, I measured the sizes and realized the GAMA switch post is indeed smaller than a standard battery post. I ended up using copper tape to increase the size for a secure fit, which worked well, but I wish GAMA had suggested this solution."

"As a boat owner, I'm thrilled with the Nilight 1-2-Both-Off Battery Switch. Its versatility allows me to manage my battery connections effortlessly, whether isolating a battery for maintenance or balancing the load. The installation was straightforward, and I felt confident with its sturdy construction."

"I appreciate that it can be surface-mounted for a neat setup. The solid feel of the switch gives me confidence in its longevity. I find it a great addition to my boat."

"Using this switch has made it so much easier for me to switch between two AGM batteries in my car. I used to disconnect one to use the other, but now I can just turn the knob to change configurations. Very good product with well-constructed terminals!"

"I really like this product. It feels high-quality and is easy to use with a great design!"

"I found this switch perfect for my RV. Installation was super easy, and it works great without being too expensive. Very good quality!"

"Using this switch for my solar power system has been a game-changer. No more fumbling for a key, and the red/green indicator is very visible. It feels rugged and reliable."

“I appreciate the good feel and it's easy to tell if it's on or off. This switch works perfectly for controlling power to my 2000-watt inverter. I love that it has zero power draw when switched off, eliminating the hassle of disconnecting cables and avoiding sparks.”

“When I installed this switch, it was a breeze. It looks professional and is built well. Now I can easily manage the battery power for my 2012 Acura MDX radio clock without having to mess with the battery terminals. It has been a great solution for me.”

“Since I installed this disconnect switch on my ATV, I haven’t faced any battery discharge issues during winter or long periods of inactivity. Just a quick flip of the switch keeps it isolated from any electronic draw, saving me so much time and effort when I want to ride again in the spring.”

"I decided to just buy it! This night switch is of better quality than I anticipated, and I was pleasantly surprised. It stays put pretty well despite not having an alignment pin."

"This product works nicely. My only issue is that the mounting is limited to a thickness of 5/8". I’m a bit uncertain about how well the coating will hold up over time."

"In the past, I had to remove my battery terminals every time I got off my tractor. It was getting tedious having to remove the exhaust and filter just to disconnect the battery ground. Now, I simply installed this switch on the side of my tractor, allowing me to easily cut the ground from the battery when I'm done. Easy peasy!"

"I bought this for my travel trailer and it works well. Installation took me about 20 minutes and I found it easy to use. I'd definitely purchase this again."

"I keep a car stored in another state, so instead of disconnecting the battery, I added this switch. It makes connecting and disconnecting the battery fast and easy. My only issue was the bolts weren't standard 10mm size, which was a bit frustrating."

"I installed it on my pickup truck's battery and it's a good quality battery isolator. It arrived promptly and does exactly what it's supposed to do, which is to stop the battery from draining."

"I found the extra Negative Battery Cable essential for my installation. Other products made me place the box on top of the battery, which wouldn't allow my hood to close. This design has been smart and effective, and I hope it holds up over time since I don't have much time on it yet."

"I have a 2023 Challenger Hellcat, and I was really hoping this would solve my issues. It works well, but when I disconnect the battery, I lose all my Uconnect performance pages and SRT modes. It took two days for everything to go back to normal, and the clock resets every time I disconnect."

"Initially, I thought it was broken since the remote wouldn't let me disconnect it. I had to manually push the button under the hood. After reading the instructions, I learned that the remote won't disconnect if the voltage is above 13.3V. It works great for my pickup truck, but I have to reset my radio and clock every time I use it. For those who need to prevent battery drain while parked, it's a great solution."

"This item works great and is simple to install and operate."

"I use these for all my vintage vehicles; they allow for quick battery disconnect and are of excellent quality at a nice price."

"Just installed two on my Toyota Camry and Lexus ES350; I appreciate the highly customizable switch with multiple configuration options."