Illustration by Alex Castro / The VergeVerizon said Thursday it is working with the Consumer Product Safety Commission (CPSC) to recall 2.5 million hotspot devices after an investigation found the devices’ lithium-ion batteries could overheat and pose fire and burn hazards. The Ellipsis Jetpack mobile hotspot models MHS900L, MHS900LS, and MHS900LPP were imported by Franklin Wireless Corp. and sold between…