What should a “normal” current be? Like a theoretical one? What should it be good for when it can’t be applied in real life scenarios? 
I think you can call yourself already lucky that your measurements are somewhat in the ball park of what’s written on the package. Current meters are current meters and current meters are not power meters. 
What is your use case at all for your current meter @WJ4IoT? Are you planning using it for a resistive load or even apply it to a something with a power factor lower than 
?