![]() "The jargon around that term dates back to the seventies and it worked. "It's incredibly confusing," according to Columbia University engineering associate professor Dan Steingart, who studies the capacity and energy efficiency of disposable batteries. ![]() The medium drain is similar to continuous use of a remote-controlled toy or gaming controller, while high drain is like a high-powered flashlight.ĭespite the E-Circuit and Panasonic carbon zinc being branded as "Super Heavy Duty," they were anything but, according to experts. They said the low-level drain is similar to the continuous use of a computer mouse or TV remote control. The researchers used the different drain scenarios - low, medium and high - to simulate real-life uses. But it was E-Circuit alkaline, a brand imported by and sold at Dollar Tree, that held its own against the more well-known brands, lasting nearly as long and costing only $1.25 for a pack of four. In the tests, which simulated different energy drain levels, Energizer and Duracell lasted the longest. The brands tested were Energizer, Duracell, Canadian Tire's Noma, Walmart's Great Value, E-Circuit from Dollar Tree, as well as Panasonic batteries from both Dollarama and Dollar Tree. Marketplace, teaming with researchers from Ontario Tech University in Oshawa, Ont., tested 240 double-A disposable batteries from six brands. ![]()
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