Car battery chargers are great tools for any car owner. These can get you a jump and recharge your battery to avoid leaving you stranded, and many of them can even monitor your battery’s health so you get enough early warning to prepare for the inevitable replacement costs.
NOCO Genius 3500 — Versatile Choice
The NOCO Genius charges both 6 and 12 volt batteries. We have focused on the 3500 model here, but this is a consistent choice among experts as one of the best car battery brands because the model comes in a wide range of amperes, so if you don’t need 3.5 amps you can go as low a .75 or as high as 26 amperes. The 15 and 26 amp models can even jump start a completely dead car.
Features:
- 3.5 amps
- Active monitoring
- Overcharge protection
What sets this battery charger apart is its versatility. Not only does it have a wide range of amperes, it can also be used on both 6 and 12 volt batteries, including wet cell (flooded), gel cell, calcium, lead acid and lithium ion batteries. Not only can it function well for car batteries, it can also be used on marine, power sport, and lawn equipment.
This charger also features active monitoring systems that let you know how your battery’s overall health is looking and work to repair damage from discharge and sulfate to lengthen and optimize battery life.
The battery charger includes charger, clamps with integrated eyelet terminals, a user manual, and even comes with a 5 year warranty.Pros
- Versatile
- Portable
- Interacts with battery
- Intuitive design
Cons
- 3500 model can’t jump start a dead battery
- Repair feature only works on 12 volt batteries
- Complex to operate
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2. Battery Tender Plus — Simplicity at its Finest
The Battery Tender Plus is an extremely friendly option. This simply and intuitive design is easy to use, even for those of us who know next to nothing about cars and aren’t mechanics.
Features:
- 1.25 amps
- Spark protection
- Overcharge protection
Following suit with the ease of use, it features a ton of built-in safety features to protect against accidents, including spark protection. It will automatically shut off when the battery reaches capacity to avoid overcharging. When this happens, it automatically switches to maintenance mode and will recharge as needed when your disused battery begins to lose charge.Pros
- Easy to use
- Durable
- 10 year warranty
Cons
- Not as specialized or powerful as other options
- Company’s customer service is lacking
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3. Stanley BC25BS — Technologically Advanced with Fastest Charge
The Stanley BC25BS can charge even a diesel truck in under 5 hours. It can start a dead engine in under 2 minutes to get you on the road quicker than other chargers. Speed is one of the primary features of this battery charger.
Features:
- 25 amps
- 3 stage charging (fast, top off, trickle)
- Patented alternator check
Another of the best features is the advanced technology. Not only does this offer standard safety features like reverse polarity protection and multiple charging modes, it also offers a unique patented alternator check
This charger also reconditions your battery during use by repairing the sulfate buildup that forms on battery plates to ensure longevity. The one-touch automatic charging, intuitive power sensing, and LED screen make it easy to use.Pros
- Intuitive design
- Patented technology
- Very fast charging time
- Engine start technology
Cons
- Less budget friendly than other models
- Won’t charge below 2 volts
- Float mode not as reliable
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4. Black & Decker BC 15 BD — Intuitive and Compact
This model is very user friendly. It’s got a lot of features that are laid out on a clean, easy-to-understand interface. Instead of a user having to choose the charging mode, the Black and Decker BC 15 BD intuitively reads the current charge and determines the right amperage to send to the battery.
Features:
- 15 or 25 amps (depending on model)
- 40 amp engine start boost
This also features a repair mode that reduces the buildup of solids on the battery to extend longevity. Diagnostics will also help alert you when your alternator is misbehaving so that you can easily distinguish and self diagnose car battery problems and prevent things from getting worse, leading to expensive repairs.There are reports that sometimes the product is dead on arrival. Make sure it works as soon as you receive it.Pros
- Intuitive use
- Compact and portable
- Extra diagnostic features
Cons
- Some reports of quality control issues – Be sure to immediately check that this works.
- Less user control
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