NTT DoCoMo Inc. (Tokyo, Japan), a mobile communications company, announced that it has boosted the life of a fuel cell battery for mobile telephones to eight hours. NTT DoCoMo unveiled the battery in September, which generates power through methanol, billed as less expensive and longer-lasting than conventional lithium-ion batteries.
NTT DoCoMo and Fujitsu Laboratories Ltd. have improved the battery to last eight hours, three times longer than the original prototype, and will carry out further work by next April. NTT DoCoMo said the new battery would greatly extend the usage time of its third-generation telephones and said research is also continuing on increasing power capacity of lithium-ion batteries.
