why no input current rating mentioned on gadgets?

N

Nik

Member
Joined
May 28, 2008
Messages
124
Reaction score
0
Points
16
why no input current rating is mentioned on electronic gadgets and devices and only input voltage is mentioned ?

Suppose if its mentioned on a device , 12V input voltage then is there any difference if a use
a) a battery with 12V and 1Amp current rating or
b) a battery with 12V and 20Amp current rating ?

Thanks
There is no wattage rating mentioned either, i can't find any wattage info neither on my laptop nor on my router nor on my mobile phone. But input voltage is mentioned on all.
 
Perhaps there's a wattage rating instead. Divide wattage by voltage to get current draw.
 
Back
Top