When it comes to battery testers, Harbor Freight carries two brands that you’ll come across often: Viking and Cen-Tech. These names may not carry the same weight as tool brands like Craftsman and DeWalt, but they serve a similar purpose for Harbor Freight as the flagship brands for this specific niche. You’ll come across a few other brands while shopping for battery testers, such as Thunderbolt Magnum. However, Cen-Tech and Viking are the two you’re most likely to end up choosing between.
Cen-Tech deals exclusively with tools an electrician may need, from the battery chargers you’re shopping for to circuit testers and more. Viking, on the other hand, only sells tools related to batteries, like testers, jump starters, and jumper cables. Since neither brand has much name power outside of Harbor Freight stores, determining exactly where they’re manufactured is difficult to pinpoint. According to the retailer, though, it purchases its tools wholesale directly from the manufacturer, and the tools found in its stores “come from the exact factory that other brands buy their tools from.”