A tape printing device comprising: a battery housing portion; a printing portion which prints on a printing tape, wherein the printing portion is held and operated; and a handle portion which includes a finger insertion space facing the peripheral surface opening portion and supports the electronic device, wherein the battery housing portion includes a housing portion main body and a lid body which covers an opening portion of the housing portion main body, wherein the opening portion includes a top surface opening portion which faces a bottom surface of the housing portion main body, and a peripheral surface opening portion which is formed on one peripheral wall on a near side of four peripheral walls (51, 53) intersecting the bottom surface of the housing portion main body, continues to the top surface opening portion, and reaches the bottom surface or the vicinity of the bottom surface, characterized in that: the battery housing portion is configured to be capable of mounting a secondary battery from the finger insertion space and the peripheral surface opening portion side in a sliding manner along a far direction parallel to the bottom surface and left and right peripheral walls of the battery housing portion, a length of the finger insertion space is shorter than a length of the secondary battery in the far direction, a secondary battery terminal which extracts electric power of the secondary battery is provided on a far side of the housing portion main body, and the housing portion main body includes a battery support portion extending at corner portions of each of the left and right peripheral wall portions and the bottom surface on a near side of the housing portion main body to raise a portion of the bottom surface, such that the battery support portion configures a gap between the secondary battery and the bottom surface. a battery housing portion; a printing portion which prints on a printing tape, wherein the printing portion is held and operated; and a handle portion which includes a finger insertion space facing the peripheral surface opening portion and supports the electronic device, wherein the battery housing portion includes a housing portion main body and a lid body which covers an opening portion of the housing portion main body, wherein the opening portion includes a top surface opening portion which faces a bottom surface of the housing portion main body, and a peripheral surface opening portion which is formed on one peripheral wall on a near side of four peripheral walls (51, 53) intersecting the bottom surface of the housing portion main body, continues to the top surface opening portion, and reaches the bottom surface or the vicinity of the bottom surface, characterized in that: the battery housing portion is configured to be capable of mounting a secondary battery from the finger insertion space and the peripheral surface opening portion side in a sliding manner along a far direction parallel to the bottom surface and left and right peripheral walls of the battery housing portion, a length of the finger insertion space is shorter than a length of the secondary battery in the far direction, a secondary battery terminal which extracts electric power of the secondary battery is provided on a far side of the housing portion main body, and the housing portion main body includes a battery support portion extending at corner portions of each of the left and right peripheral wall portions and the bottom surface on a near side of the housing portion main body to raise a portion of the bottom surface, such that the battery support portion configures a gap between the secondary battery and the bottom surface. the battery housing portion is configured to be capable of mounting a secondary battery from the finger insertion space and the peripheral surface opening portion side in a sliding manner along a far direction parallel to the bottom surface and left and right peripheral walls of the battery housing portion, a length of the finger insertion space is shorter than a length of the secondary battery in the far direction, a secondary battery terminal which extracts electric power of the secondary battery is provided on a far side of the housing portion main body, and the housing portion main body includes a battery support portion extending at corner portions of each of the left and right peripheral wall portions and the bottom surface on a near side of the housing portion main body to raise a portion of the bottom surface, such that the battery support portion configures a gap between the secondary battery and the bottom surface.