Like other Chaerephon species, its ears are connected to each other via a thin band of tissue called the interaural membrane.It is a small species of bat, with a forearm length of approximately 38.5 mm (1.52 in).Individuals weigh approximately 7.2 g (0.25 oz).The ears have rounded tips, and are wider than they are tall.Its antitragus is rectangular and defined, while the tragus is very small.Its wings are long and narrow, with the wing membranes whitish and nearly transparent.Its dorsal fur is dark brown, with its ventral fur a lighter brown.Its dental formula is 1.1.2.32.1.2.3, for a total of 30 teeth.
The holotype was located approximately 3 km (1.9 mi) northwest of Guadalupe, São Tomé and Príncipe in the vicinity of Praia das Conchas. Another specimen was collected near Água Izé. It has been documented in open savanna forest with baobob trees (Praia das Conchas) and humid forest and (Água Izé). Its habitat near Água Izé may have been lost to agricultural conversion, with the forest replaced by cocoa plantations.
It is currently assessed as endangered by the IUCN.As of 2019, the only individuals that have been documented were the three initially used to describe the species in 1993.It meets the criteria for an "endangered" assessment because its extent of occurrence is less than 1,000 km2 (390 sq mi); the population is only known from São Tomé Island; and its habitat is declining in extent and quality.It may also be declining due to competition with the little free-tailed bat.
