In one of my drawers I had that old thing you put in the cigaret-lighter in a car.
something like this:
but only with 3 LED's (mine that is)
So,
I dismantled it,
made kind of a support and filled it with silicon (for moister reasons)
drilled holes for the LED's in the plastic thing where the ignition key sits and I 've got:
How does it work?
When the red LED is lit, tension is a mere 11V
rood + orange : 11.8V
orange:between 12V and 13V
orange + green: between 13V and 13.5V
green: 13.8V and up
It's not rocket science, but it gives me an indication on how the battery is.
Christiaan
something like this:
but only with 3 LED's (mine that is)
So,
I dismantled it,
made kind of a support and filled it with silicon (for moister reasons)
drilled holes for the LED's in the plastic thing where the ignition key sits and I 've got:
How does it work?
When the red LED is lit, tension is a mere 11V
rood + orange : 11.8V
orange:between 12V and 13V
orange + green: between 13V and 13.5V
green: 13.8V and up
It's not rocket science, but it gives me an indication on how the battery is.
Christiaan