Patent ID: 8247105

Claim:
A power supply comprising: a battery comprising a positive electrode and a negative electrode opposite to the positive electrode; and a battery holder comprising: a housing to receive the battery, the housing defining a latching groove in an inner surface thereof; an elastic member fixed in the housing and resisting the negative electrode of the battery; a protecting member positioned in the housing, the protecting member comprising an insulated fixing sheet, a plurality of extending portions extending from a side surface of the fixing sheet, and a latching portion formed on the extending portion engaging in the latching groove of the housing; and a positive conductive sheet fixed in the fixing sheet and contacting the positive electrode of the battery; wherein the elastic member, the battery, the positive conductive sheet and the protecting member are coaxially received within the housing in an order as listed above, and the plurality of extending portions extend from the side surface of the fixing sheet along an axial direction of the battery holder and away from the positive electrode of the battery.