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The 1.5V AA Toshiba E-Power batteries are Carbon-Zinc primary batteries and are the third model in Toshiba’s line of such batteries. According to the manufacturer these batteries are supposed to provide 25% improved performance vs Heavy Duty line and while we still haven’t tested the standard 1.5V AA Toshiba Heavy Duty batteries, we have tested the Super Heavy Duty model, so we could compare these to the E-Power series of Carbon-Zinc products. Just a reminder, the Zinc batteries do offer shorter shelf life and lower capacity and are not suitable for high load applications as compared to the Alkaline primary batteries. The Toshiba E-Power batteries we tested here were with an expiration date 05-2015.

Time for the tests to start for the 1.5V AA Toshiba E-Power batteries beginning with a low constant current discharge rate of 0.1A and the result we got was 731 mAh as capacity. This is a decent result for a Carbon-Zinc batteries, but compared to the Toshiba Super Heavy Duty batteries the E-Power does provide less useable capacity. Increasing the load to 0.2A and the E-Power still does pretty good, though at 0.5A the performance is not that good already and 1.0A proves to be too much. As expected these batteries do perform well, but are nothing special even for Zinc batteries. They are suitable for low load applications, but not for high load ones where you should definitely consider either good Alkaline batteries or even NiMH batteries.

The performance of the 1.5V AA Toshiba E-Power batteries in our tests:

– 731 mAh at 0.1A load
– 516 mAh at 0.2A load
– 199 mAh at 0.5A load
– 36 mAh at 1.0A load

– 0.874 Wh at 0.1A load
– 0.589 Wh at 0.2A load
– 0.207 Wh at 0.5A load
– 0.036 Wh at 1.0A load