Learn how to make your car battery last longer with this expert advice from CR. These simple steps will catch any battery ...

️ Editor's note: This product category requires new testing about once a year. We'll update this article with the most recent information when it's available. This article was updated in December 2025 ...

Since I had to get around without a car, I needed a reliable, compact jump starter to fix my dead battery. These tools are lifesavers for long trips, cold nights, and disaster preparation. The jump ...

Only attach jumper cable clasps to the correct locations in the guide. Be cautious with your choice of grounding metal to attach a clasp to. Turning your keys in the ignition only to realize your car ...

Considering their differences in design, you might wonder if you can jump-start a V8 with a four-cylinder car. The answer ...

The most common motor style for an electric bike is a hub motor (a motor in the center of the wheel), and we’ve all known for ...

Dead batteries and low tires rarely happen at convenient times. Whether it’s a cold morning, a long road trip, or a car ...

Narrator: Muscles! Really? They don't look much use. When a muscle contracts (bunches up), it gets shorter and so pulls on the bone it is attached to. When a muscle relaxes, it goes back to its normal ...

If it is very cold outside, your car’s auto stop-start system will often not operate. This is because the car is still warming up, and the HVAC system needs that heat to warm the cabin. So, auto ...