Original packaging Hailong battery 48V 20AH 52V 36V 30AH Hailong battery Max BMS 500W 750W 1000W 1500W Hailong battery 21700

Original packaging Hailong battery 48V 20AH 52V 36V 30AH Hailong battery Max BMS 500W 750W 1000W 1500W Hailong battery 21700

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