We’ve all experienced that dreaded sound under the hood when you twist the key: Click. Click Click. A dead battery is more of an inconvenience around town (depending where you live), but out in the ...

Jeep's Wrangler JLs are electrically complicated vehicles. From the two factory batteries under the hood to all of the sensors that run the CAN bus system, these rigs are incredibly sensitive to ...

Have you ever popped up the trunk of a diesel truck and noticed that there are two separate batteries under the hood? Given that gasoline-powered vehicles seem to do perfectly fine with a single ...