Posts Tagged ‘1.5V Zinc battery


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


The 1.5V AA Maxell Zinc batteries as their name suggests are Zinc Carbon batteries and here Maxell is not trying to cover this fact as some other manufacturers do by not clearly writing the type of their battery. The batteries we’ve tested here were labeled with an expiration date of 09-2015 and they are supposed to have a 3 years shelf life as most Carbon Zinc batteries do. The importance of saying clearly that a primary (single use non-rechargeable) battery is a Zinc Carbon one and not Alkaline is important as these batteries usually provide less capacity and are with expiration dates sooner than an Alkaline and although a bit cheaper unless for some low power applications you better go for Alkaline and not Zinc Carbon.


We started the tests of the 1.5V AA Maxell Zinc batteries with a constant current discharge rate of 0.1A and they were able to provide us with 649 mAh and while this is not bad for a Zinc Carbon battery you can get much more from an Alkaline battery. Increasing the constant current load the Maxell Zinc batteries do provide lower capacity, but they can handle decently at up to about 0.5A, going for a 1 Amp seems to be a bit too much for them as they very quickly hit the cutoff voltage.

The performance of the 1.5V AA Maxell Zinc Batteries in our tests:

– 649 mAh at 0.1A load
– 499 mAh at 0.2A load
– 236 mAh at 0.5A load
– 25 mAh at 1.0A load

– 0.786 Wh at 0.1A load
– 0.584 Wh at 0.2A load
– 0.253 Wh at 0.5A load
– 0.030 Wh at 1.0A load