(Bloomberg) -- Defects that caused Samsung ElectronicsCo.’s Note 7 phones to burst into flames last year revealed thatthe industry’s voluntary standards for the design and manufactureof rechargeable batteries aren’t adequate to protect safety, a U.S.consumer-safety regulator has concluded.

Lithium-ion batteries

The Consumer Product SafetyCommission, which negotiated a recall of 1.9 million of thephones and is conducting its own investigation, on Tuesday said ina press release that standards for lithium-ion batteries in mobilephones need to be updated.

Those standards were first developed in 2006 and haven’t beenrevised since 2011. The agency and Samsung are working with theindustry to "take a fresh look" at the voluntary standard forlithium-ion batteries in smartphones, the commission said.

More safeguards during design, manufacturing

"Industry needs to learn from this experience and improve consumersafety by putting more safeguards in place during the design andmanufacturing stages to ensure that technologies run by lithium-ionbatteries deliver their benefits without the serious safety risks,"CPSC Chairman Elliot Kaye said in the release.

The CPSC action has broad implications for the worldwide mobilephone industry, which sold 1.98 billion of the devices in 2015,according to Bloomberg Intelligence.

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