Use notice: This lamp outputs end to be able to buy a rib cuff or rib collar lamp holder to receive to market of lamps and lanterns, match E27 lamp holder only, power can be in 7~20W random an electron is energy-saving the lamp. Place needs with accumulator capacity basis and decide, the maintenance-free that chooses 12V14Ah commonly, have off-the-peg charger form a complete set. The principle that use phone is: "Be full of use namely, owe pressure do not use! Owe pressure do not use!!