Electric power-assisted bicycle battery 1. Electric power-assisted bicycle battery industry standard (taking 6-DZM-10 as an example) 1. 2h rate capacity: above 10Ah (5A discharge to 1.6V/cell time ≥120min) 2. Charge retention characteristics: after 28 days of storage, the remaining capacity is not less than 8.5Ah 3. Large current discharge characteristics: discharge at 15A current for 5min, the terminal voltage should not be lower than 1.4V/cell 4. Over-discharge characteristics: the initial discharge current is 12±1.2A, and the constant impedance is continuously discharged for 21d, and the capacity should not be lower than 7.5Ah 5. -10℃ low temperature capacity: after storage for 10 hours in a sub-zero (10℃±1℃) environment, the actual capacity should not be lower than 7Ah 6. Overcharge characteristics: after continuous charging at 1.2A current for 48 hours, the actual capacity shall not be lower than 9.5Ah, and the appearance shall not be abnormal 7. Sealing reaction efficiency: after charging at 1.0A current for 48 hours, and then charging at 0.5A for 29 hours, the gas recombination efficiency of collecting for 5 hours shall not be lower than 90%. 8. Cycle life: 70% deep discharge, cycle life is greater than 350 times. 2. What is an electric power-assisted bicycle? National standards and content of electric power-assisted bicycles: Electric power-assisted bicycles are special bicycles with batteries as auxiliary energy, two wheels, and can realize human riding, electric or electric power assistance. National standard of electric power-assisted bicycles: The national standard of electric power-assisted bicycles, the full name is \"National Standard of the People\'s Republic of China, GB17761-1999 General Technical Conditions for Electric Bicycles\". It was issued on May 26, 1995 and implemented on October 1, 1999.
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