24V 36V 48V Battery BMS PCM Used For 3.2V Lifepo4 Cell And 3.7V Li Ion Cell Lithium Battery BMS With Balance Function From Annpower, $15.04 | DHgate.Com
13S 48V 20A BMS li-ion battery BMS Used for 48V 10Ah 12Ah 15Ah and 20Ah battery | eBay
48V 40A BMS for Li-ion Battery 13s BMS Protection Board with Balanced and Waterproof - China Protection Board, Battery Pack | Made-in-China.com