1, the first few moderate. Household general not more than 12, the use of the battery in the 2~3 relatively good, and then a little bit of a waste, for other special needs can be determined according to their needs.
2, welding to prison. Each diode is connected by welding on the circuit board, if the weld contact is not good, it may cause not bright or affect the whole service.
3, try to focus the spotlight flat bulb. The torch is unlike ordinary flashlight can adjust the focal length, the purchase should pay attention to do not have astigmatism phenomenon.
4, contact with the power switch is obvious. This flashlight uses a rotary switch, tightening on the open, and then tighten the loose on the off, if the contact is not obvious, it is easy to cause when the light off phenomenon.
5, pay attention to waterproof. Because it belongs to the electronic products, there is a circuit board in front of the torch, once the water is easy to short circuit, resulting in damage.