best loved and most efficient rechargeable battery? You throw a party, of course, which is exactly what Sanyo is doing with its Eneloop Tones Glitter limited edition set. Packs of eight technicolored AA and AAA Eneloops will go on sale in Japan on November 14, augmenting the brand's signature longevity with a dash (hell, make it a heaping) of glamorous style. For the functionalists out there seeking an excuse to jump on board, each box contains one of each color, meaning you can claim you bought them to color-code your battery management operation. Yeah, we'll believe you.