The 7 Best Car Battery Chargers for Roadside Emergencies

All the basic features are here at a very low price, including protection from reverse clamping and a “float mode” for fully charged batteries.

The included set of bolt-on leads lets you quickly connect and disconnect the charger. Operation couldn’t be simpler: a green light shows the Motopower is on, and a red light indicates charging status. With 1.5 amps of power, it charges slightly faster than most competitors in the low-price bracket.

Key Specs

Think of this 15-amp charger as a miniature version of the shop-grade Schumacher. It’s also the form and function that will be most familiar to older or experienced users. The included clamps are high-quality and should fit most cars. Just clamp on, plug in, and select one of three modes.

The 15-amp rapid charge is slightly more than the competition can manage, and a carrying handle makes it easy to place where you want it.

Key Specs

This charger is compact, light, easy to operate, and almost bombproof. It delivers a 3-amp charge, then automatically switches to float mode to maintain proper voltage and prevent overcharging.

A two-color LED indicates charging status, and if the battery voltage drops below a certain level, it resumes full charging output in adaptive mode. It’s compatible with most automotive batteries and can switch between 6- and 12-volt batteries with the push of a button. Its battery clamps are spark-proof, and the Battery Tender 3-Amp will automatically detect reverse polarity. It comes with a 5-year warranty and lifetime customer service.

Key Specs

Dealerships and race shops that used to scatter CTEK individual chargers throughout the building are now switching to the multi-vehicle Noco 2x4 model. It weighs just under 8 pounds, mounts to a wall, and can handle four vehicles at the same time, each in a different mode.

Want to float charge one car, recondition another, and bring two other dead batteries back to life in force-charge mode? Not a problem.

Key Specs

If you own a vehicle you only drive occasionally, an under-the-hood charger saves the hassle of disconnecting it from the battery and storing it each time you want to go for a cruise.

The compact Schumacher SC1300 mounts under the hood to supply up to 1.5 amps, while a built-in microprocessor automatically adjusts the charging rate to maintain an ideal charge state. Float mode delivers a small current when needed.

Reverse hook-up protection prevents the charger from working if the battery clamps are installed in reverse polarity, and the Schumacher automatically detects 6-volt or 12-volt batteries.

Key Specs