Best Battery Tenders of 2025

"I can't recommend this product enough. I've had one for years on my mower and just bought another for my second mower. It's great at keeping my battery charged and is quite durable. The price is very reasonable compared to similar chargers. I love the indicator lights that show charging status, and the cord is long enough to keep it away from the equipment."

"I absolutely love this charger for my boat. It keeps the battery charged throughout the winter and is super easy to use. When spring rolls around, the boat starts up immediately."

"I rarely write reviews, but I had to share my experience with this product. After my wife left the dome light on, my battery was dead at 4.7 volts. I opted for the Battery Tender after seeing great reviews. It completely restored my battery within a day and even worked wonders on my deep-cycle battery after I reached out for support. Now, all my batteries are in excellent shape!"

"I found the Battery Tender Jr incredibly easy to use. It has a nice indicator light that shows the battery's condition, and I love how compact it is. It keeps my motorcycle battery charged perfectly!"

"As someone new to car care, I was surprised by how foolproof this product is. The safety features are reassuring, and it worked perfectly to keep my family member's car battery topped off. The instructions were straightforward, although I needed to be careful with the negative-ground connection."

"I purchased this charger to keep my car battery healthy during the winter months. It's a cheap and effective solution for cold conditions, and the long cord is a convenient feature. I can just plug it in and forget about it, knowing it will keep my battery charged!"

"I found the Deltran Battery Tender to be a lifesaver. A service advisor recommended it for my rarely driven car. It maintains my battery perfectly, turning to a trickle charge when full. It's very easy to connect and use—definitely idiot-proof. I give it my highest recommendation!"

"I've been using this Battery Tender for my RV batteries during winter storage. It works great, but I had some trouble charging my Lithium Motorcycle battery. It defaulted to AGM mode and wouldn’t switch to Lithium, which made me hesitant to use it on an expensive battery. For other applications, though, it’s perfect!"

"I bought the 4 Amp Deltran Battery Tender for my Mustang GT that sits unused for long periods. It restored the battery charge in just one day! I love how easy it is to connect, whether using clamps or permanent cables. After two weeks, I was so impressed that I bought another one for my Taurus SHO. Money well spent!"

"I purchased this device for my vehicle that I only drive occasionally. It has an alarm that drains the battery after about a week. I was frustrated with jumping the battery just to keep it charged. This tender has worked perfectly! It was easy to set up and has kept my vehicle at a perfect charge."

"This is my third Battery Tender product, and all of them have performed well. I use them on my older cars, and this 3 AMP charger has become my favorite. I bought one for my son, and he’s thrilled with it. These units provide everything needed to maintain 6- or 12-volt batteries, and they last a long time!"

"I very rarely use my car, so I needed something to help maintain the battery when it's not in use. After ordering this charger, I hooked it up and it worked as promised. I was able to start my car without needing help! Installation was easy, and I just needed an extension cord."

"I recently purchased a battery tender, and it has exceeded my expectations in every way. The build quality feels solid and durable, giving me confidence in its longevity. It was incredibly easy to set up with clear instructions. The smart charging feature is great, automatically adjusting to avoid overcharging my vehicle's battery. The LED indicators provide clear information on the charging status. I've used it on my car, and it has worked flawlessly, keeping the battery fully charged during winter. Overall, it's a reliable and efficient product that I would highly recommend."

"I had a dilemma! My 2020 car's battery would die every week due to the heavy electronics. Tired of calling roadside assistance, I spoke with a roadside tech and my dealership, who suggested a battery charger. I had this charger installed, and now I don't need to contact them anymore! The easy-to-understand lights on the base are fantastic—yellow when charging, green when fully charged. It's compact and easy to use. I'm very pleased with this durable and wonderful battery tender!"

"I've been using the Battery Tender Junior for over two years now, and I couldn't be happier with its performance. It's incredibly easy to use—just plug it in, and it takes care of the rest. The switchable feature for lead-acid and lithium batteries is a game-changer. I appreciate how it automatically switches to maintenance mode once the battery is fully charged. Since using it, my battery life has significantly improved. I highly recommend this product for its reliability and peace of mind!"

"I don't drive much anymore since retiring, and my car battery started failing at just 3.5 years old. After three jump-starts, I was about to spend over $200 on a new battery when I discovered battery chargers. I got the NOCO Genius 1 and it’s been a game changer!"

"I have a truck that mostly stays in the garage. Every time I needed to use it, the battery was dead. I attached this little charger, and it took only a day and a half to fully charge. I'm really impressed! It’s well designed and works great. The only downside is the manual could be clearer, but overall, I'm very satisfied!"

"Según todo lo leído, es de los mejores. En oferta, vale lo mismo que en EE.UU. Apenas lo estoy probando, y lo único 'raro' es que el manual no explica bien cómo usar el modo de recuperación para baterías muy muertas. Por lo demás, como mantenedor de carga, es perfecto!"

"I found these chargers worked perfectly for my lawn tractor and truck battery. I only use the tractor once a month, and it keeps the battery charged well. The second charger revived my truck battery in just two days while I awaited a new alternator."

"These chargers are a must-have for maintaining car and motorcycle batteries. They are awesome and super easy to operate!"

"I purchased the two-pack of smart technology trickle chargers, and they operate perfectly. I appreciate the different connectors included. They’ve been excellent for managing my generator and boat batteries!"

"I bought this to use on my 74 GMC to keep the battery charged through winter. It's so easy to use and small for storage."

"I ordered the Battery Tender 800 for my Mustang that sits between drives. It took a short time to enter storage mode and work as intended. I've had great experiences with Deltron products, and I'm confident this one will last."

"I set this up in my elderly neighbor's car, as he only drives a kilometer or so a couple of times a week. It's been working well so far, and I also use a Battery Tender Jr. for my motorcycle without any issues for years. I highly recommend these products!"

"I bought one of these several years ago for my collector car, and it starts every time I need it. It keeps the battery at full capacity. After 8 years, my battery still has its original reserve and starting power. I just purchased another for my pickup at the lake cabin, which sits for months at a time. Now, it starts strong even after being idle for weeks!"

"My 2014 Honda Accord's battery was dead after sitting for just 3 weeks. I connected this charger, and it fully recharged the battery. After weeks of use, it seems to have made my battery healthy again. Although slightly pricey, I trust the Battery Tender brand."

"This little gadget is perfect! It's easy to use and works great! I have it mounted on my forklift battery, and now we charge it every night. There's no more hassle with dead batteries. I highly recommend it!"

"I bought these to keep my generator starter battery charged, and they're working great. The installation was a breeze. Now, instead of worrying about the battery getting weak, I can just plug it in when I'm not using the generator!"

"I really appreciate the 'restore' feature on this charger. It has successfully revived a couple of my older batteries that had been neglected. The performance is surprisingly impressive for such a small device!"

"After purchasing four of these chargers, I've found them to work perfectly for maintaining the batteries on my motorbikes, Miata, and boat. They turn off when the battery is fully charged and wake up as needed. It’s great to see my battery life improving!"