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FDK/Sanyo Twicell 1900mah NiMH AA 6.0V 5-cell Flat Pack
FDK (formerly Sanyo) Twicell (formerly Sanyo Eneloop) 6.0V, 1900mAh, AA, 5 Cell Flat Pack. FDK's more environmentally friendly NiMH battery. Although these are advertised as charged and ready to go right out of the package, we recommend a forming charge period prior to use. The Twicell NiMH type has lower daily self discharge than typical NiMH cells. These cells have done well in our in house tests and I feel good about offering them for RC usage.
Overnight charging suggestion is stock factory wall wart 50-70mah.
Although FDK's website shows Cx1 (capacity x 1) fast charge rates with a NiMH rated charger, I'm not prepared to warranty any packs damaged by fast charging or peak charging in any form. If you insist on experimenting with fast charging and damage a pack, call FDK, not Radical RC.
 "FDK/Sanyo Twicell 1900mah NiMH AA 6.0V 5-cell Flat Pack")