9V Toshiba Heavy Duty Battery Tests

29 Nov
2013

9v-toshiba-heavy-duty-battery

The 9V Toshiba Heavy Duty batteries we are testing here are essentially lower capacity Zinc batteries, even though they are not labeled as such the Heavy Duty in the name points exactly to that along with the lack of Alkaline anywhere written on the battery. These batteries are often found in supermarkets for example and are relatively cheap, so you can often make a mistake of taking them if you need a 9V battery for some device. And while nowadays 9V batteries are not so commonly used, there are still a lot of devices that need them and it is a wise idea to spend your money on something better that will last longer. The particular battery we are testing here is with an expiration date of 01-2016 and according to Toshiba these batteries are suitable for slightly heavy duty to light duty applications such as flashlights, radio cassette recorders and clocks.


9v-toshiba-heavy-duty-battery-capacity

In order to test the capacity of the 9V Toshiba Heavy Duty batteries we are using a constant current discharge rate of 0.05A (50 miliampers) and we have managed to get just 4 mAh out of the Toshiba battery. No, that is not a mistake, it simply means that our test discharge current seems to be a bit higher for these batteries and they simply cannot handle it well. So much for recommending these over any other Zinc batteries as we usually should get about 100-150 mAh as useable capacity in our test scenario under these conditions. In fact we have managed to get more useable capacity out of a Carbon Zinc battery that has expired already than what this new Toshiba battery has managed to provide. At a lower loads the battery should probably handle better and be able to provide higher useable capacity, however that does not make it things any better – in short we are very disappointed from the result.

The performance of the 9V Toshiba Heavy Duty batteries in our tests:

– 4 mAh at 0.05A load

– 0.030 Wh at 0.05A load



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1 Response to 9V Toshiba Heavy Duty Battery Tests

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dragontirex

December 1st, 2013 at 23:17

Those 9V batteries were the cheapest 9V batteries that I could get in my town. In my D cell testing that I made, were tested a Sony New Ultra, a Jb 777 (super chinese brand) and a Toshiba Heavy Duty, all being zinc carbon. The Toshiba Heavy Duty won the first place with 4250mAh final capacity which involved about 2 days of low current testing. As a price diference and performance, It is not worth it to buy Zinc-Carbon batteries in my opinion, unless you are in a very big emergency.

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