This battery monitor also supports custom mode in range of DC 7-100V.
2PCS Battery Capacity Voltage Meter, 12V 24V 48V 60V 84V IP68 Waterproof 2P
UMLIFE 2PCS DC 12V 24V 36V 48V 72V Battery Capacity Voltage Meter with Green
Battery Capacity Voltage Meter, 12V 24V 48V 60V 84V IP68 1 inch, 1P