how can i locate my LG G5 phone when the battery is dead ?

[AC Question]

i cant go on android manager because i dont remember my google account is there another way to track or locate my lost phone please i really need to find there are lot of important things in there that i need back

 

[belodion]

You will have to resort to the older ways of trying to find it, that is to say, looking for it, and advertising its loss together with an appeal for its return.
Try Google Account Recovery for your forgotten details.