In my rare device uses a battery of this size D. Type D as I remember, most large format batteries, bigger is simply no, finger batteries. I have these batteries needed for the newfangled fly swatter, ingenious products in China. Flyswatter works on the principle of electric shock, and I must say works well, but more on that another time.
These batteries I saw in the near hardware store, where they decided to buy them. Although these batteries for my feelings probably the most counterfeited batteries for almost any Chinese market, these Panasonic batteries of all types is just a sea. But like the instance is made in Poland, according to the label 
In comparison with other formats batteries, battery capacity Panasonic D format I think will be the biggest, although it must conduct tests and measurements, since much depends on the technology used in the elements. But this has not gotten ...
Battery Panasonic General Purpose, Model D-R20BER
Voltage: 1.5 in
Type: D (D)
Size: XL Size, LR20
Technology: Zinc Carbon, the contents of 0% Hg
Production: Poland
Vendors: Belgium
Manufacturer: Matsushita Electric Industrial Co.Ltd. Japan
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