New 48V battery 36V Hailong electric bicycle polyester DP-9, BMS 18650 Cell, lithium-ion battery 36V 48V 52V 40AH durable

New 48V battery 36V Hailong electric bicycle polyester DP-9, BMS 18650 Cell, lithium-ion battery 36V 48V 52V 40AH durable

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