Zero Bikes is recalling all 2012 Zero S and DS fashions in addition to the DSP police bike, due to an issue that may trigger brief within the battery, creating a hearth danger. As a result of nature of the difficulty, Zero can be shopping for again all fashions from homeowners, or supply a monetary trade-assist in direction of a more moderen mannequin. The recall impacts 218 items within the U.S.
Based on paperwork launched by the Nationwide Freeway Visitors Security Administration, the cell pouches within the battery packs of the affected fashions had been designed in such a means that they might transfer inside their holders. By common put on, this will likely trigger a breach within the outer layers of the cell pouches. Humidity can thus penetrate the pouches, resulting in cell separator decay and permitting an inside brief throughout the cell, creating the potential for what Zero calls a “thermal occasion” (i.e. hearth). Bikes affected by this drawback could exhibit a major lower in energy and vary.
The issue was first reported in July 21, 2016 after an S mannequin transformed for police use in Hong Kong skilled a “thermal occasion” whereas charging. Based on the South China Morning Put up, a pair of S fashions had been charging on the Ngau Tau Kok police station when one among them caught on hearth at 1:15 am native time. The hearth broken each bikes in addition to a close-by police van, however nobody was injured.
Zero employed a battery technical professional to look at the affected motorbike in addition to the remainder of the police division’s fleet. The contracted professional decided the trigger was attributable to sudden put on of a cell pouch mixed with the humid Hong Kong local weather. Zero proceeded to inform the cell producer, Vitality Innovation Group (EIG). The South Korean firm responded, saying it had obtained no different reviews and couldn’t recreate the issue.
Quick ahead to October 2017 when Zero obtained two extra reviews, one from Canada and one other from Texas. In each of those instances, a 2012 Zero S mannequin skilled thermal occasions. Each Zero’s battery technical professional and the contractor that carried out the Hong Kong investigation carried out a forensic evaluation of the 2 North American bikes however weren’t in a position to make a lot progress because of the intensive injury to the 2 bikes. Zero’s battery professional carried out additional evaluation on battery packs that had been returned to Zero from clients and located proof of wear and tear on the cell pouches and indicators of humidity coming into the pouches. Based on Zero, EIG didn’t reply to requests to participate within the evaluation.
The issue solely impacts 2012 Zero S, DS and DSP fashions. For the 2013 mannequin 12 months, Zero modified to a very totally different battery pack structure produced from a special provider that makes use of cells fastened inside their holders and thus won’t expertise the identical put on.
Based on Zero, EIG had not made any modifications to the design of the battery pack structure, so there isn’t a treatment in place. Consequently, Zero will repurchase all 2012 S, DS and DSP fashions or supply a monetary trade-assist in direction of a more moderen mannequin. Zero asks homeowners of affected fashions to keep away from using or charging recalled items. Zero will organize to choose up all recalled fashions at no expense to homeowners.