The USB (Universal Serial Bus) has been one of the most successful interfaces in the history of PCs. A USB not only transfers data between a portable device and a host PC, it also allows for power ...

️ Editor's note: This article was updated with new information in December 2025. Dead batteries are a predictable reality for any car that spends more time parked than driven. Battery discharge does ...

The highest-rated Harbor Freight battery chargers come from Cen-Tech and Viking, with a 4-amp Viking charger topping the list.

A battery load tester can perform all kinds of analysis, from warning you of low charge to identifying potential faults in your alternator. Regularly checking your battery highlights problems before ...

The true measurement of a battery’s capacity is essential for many scenarios. A capacity measurement device can solve the problem of spotting fake batteries as well. Nowadays fake Lithium and NiMH ...