Backpack type power supply for power tool, has operation unit comprising switch and/or display unit, where switch is designed to activate or deactivate rechargeable battery and display unit displays battery level of rechargeable battery

摘要

The power supply has a housing (5) accommodating a rechargeable battery (1), and a harness (6) by which a user wears the housing at a spine. An operation unit (65) comprises a switch and/or a display unit. The switch is designed to activate or deactivate the rechargeable battery. The display unit displays a battery level of the rechargeable battery. The display unit comprises a display area on which the battery level is displayed. A lap belt comprises a setting section. A cable (64) is electrically connected with the display unit, and the harness is provided with the setting section.