... Long life 1000 times CE,RoHS,SGS certificate OEM/ODM Lithium Iron Phosphate (LiFePo4) 48V 10AH LFP E-bike Battery and ... certificateCERTIFICATION: CE,UL,FCC, RoHS,ISO9001 Features1.Lightest weight, the batteries are approximately 1.3kgs (24V) and 2.0kgs (36V) ... foil composite film on lithium-ion polymer battery, smaller , lighter,,higher specific energy than other batteries with same specifications.3. ...