M611 7-80v lead-acid Lithium Battery discharge Controller 12v 24v 36v 48v Low Battery voltage over discharge Protection Board - AliExpress
12V 24V 48V Battery over discharge protection module low-voltage protection board power loss disconnection under voltage - AliExpress
48v battery voltages help please | Electric Bike Forums
Amazon.com: 6-48V Battery Charging Controller Module, Battery Low Voltage Cut Off Automatic Switch On Protection Undervoltage Controller, for Under Voltage Control Over-discharge Protection : Electronics
Tesla Confirms The Switch To 48 Volt System
LiFePO4 Voltage Chart (3.2V, 12V, 24V & 48V) - BatteryFinds
Amazon.com: 6-48V Battery Charging Controller Module, Battery Low Voltage Cut Off Automatic Switch On Protection Undervoltage Controller, for Under Voltage Control Over-discharge Protection : Electronics