Bicycle Model A. Failure analysis

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Item	Event	Action	Risk
Battery	Capacity fade
	Electrolyte degradation
	Internal short circuits
	Over-dischange
		Implement a warning method
	Thermal runaway / fire (over discharge)
	Thermal runaway / fire
		Add a thermal protection
Chain	Corrosion
		Maintain good lubrication
	Elongation (wear out)