Call volt battery charger

[jerryj]

Just tried using the 12 V battery charger can't get it to work no LED lights am I doing something wrong anybody else have trouble with this

 

[Egika]

Yes, other people have reported that the minimum voltage for it to work is rather high and sometimes only reached while the car is running.
If yours is not broken and also the socket in your car powered at all, than it might be this...

 

[Robert Mitchell]

Yep, sometimes standing car battery voltage isn't sufficient to activate charging. With mine I need to have the engine running.