eneloop came out as the first cartridge goods, in order to embody clean energy society which is one of the programs of a new vision ThinkGAIA. This low self-electric discharge nickel hydrogen charge pond developed on the theme of there is nothing throwing away and not applying load to earth environment is first charge pond in the world which he buys and can be used immediately, and the energy residual ratio after neglect also maintains about 85% for one year. In order to express the merit of this user-friendliness, the main part of a battery and the graphic design of a package were taken as the minimal design which is not in an old charge pond (battery) and which is simple and has feeling of purity. Moreover, about 1000 repetition charge is possible for this battery, and it can stop to load the earth environment.

So I bought these rechargeable batteries, for which there has been a lot of advertising from a number of makers since last year. I do not know if there have been actual recent advances in technology that merit the buzz, or if it is just a new trend in marketing. The most interesting thing is that the charger came with plastic battery casings that can be used to turn a AA battery (or Type-3, as it is called here) into a physically much bigger C (Type-2) or D (Type-1) battery. I always thought batteries came in different sizes because they output different voltages. Maybe this is not the case, or it is just not an issue anymore with modern electric devices. Or maybe this is the reason why rechargeable batteries are said to not work so well / at all for some applications.