"power fault" on charger

[csspring]

So I got my new Empulse R... Sure wish there wasn't snow and ice everywhere and the temperature was above 5 degrees   

When I plug the charger in to some outlets at my house, I get a "power fault" red light on the charger.   The charger  works fine at other outlets in the house.  (Of course the outlet in the garage is one of the ones giving a fault )
 
I have an older house, and am sure this is a wiring issue.  What I would like to know is if anyone knows exactly what sort of wiring issue might cause this fault, so I can look into fixing it.

FYI the outlets that are giving me the fault do work.  (In fact the one in the garage is used to charge my mower)

Thanks in advance for any insights you might be able to provide...
 

[flar]

You might be able to find an outlet tester at a hardware store that should give you a more specific diagnosis.  Home Depot has one that indicates 5 or 6 different potential faults for about $8.

[frodus]

Is it tripping a breaker?

If not then its likely too low of a voltage due to voltage drop in the lines.