No.	Item					Value	Unit	Note
1	Rated voltage					3.7	V
2	Rated capacity					4	Ah
3	Lighting time			Main illuminant		≥20	h	3 m away from the lamp
				Sub illuminant		≥80
4	illumination		Start of lighting			≥2000	Lx	1 m away from the lamp
			lighting for 11hours			≥1500
5	LED	Luminous flux				≥70	LM
		Current			Main illuminant	0.15	A
					Sub illuminant	0.06
		Voltage				3.7	V
6	Battery Life					＞500	Cycle time
7	Battery storage life					half	year
8	Dimension					62×26.5×106	mm
9	Weight of entire light					≤0.60	Kg