The CTEK MXS 5.0 has become the gold standard for keeping car batteries healthy, and a rare Amazon discount has knocked more ...

If your battery is dying on you, the cause might be what's known as parasitic drain. Here's what it is, how it happens, and what you can do to prevent it.

First, it's important to know that some USB ports are designed for charging while others may only support data transfer. Most will provide a measly output of 0.5 to 1 amp -- barely enough to ...