>Because of the high current with the led displays, I am trying to
>find an alternative with a LCD, but I don't know anything about it.
>
>It would be enough to have and LCD with 64 pixels (but I don't even
>know if such a things exists), just like the LED dot-matrix displays.

It is not clear to me how many characters you want, but I think you are
wanting only one large character. In this case I would look at using the LCD
off a mobile phone as a single large character display. If you need
backlighting, then put all the leds that light it in series, as I am sure
your electric vehicle will have more than enough voltage available to do
this.

However you may have an alternative when using an LED display, Use a
switching regulator to drop the voltage from the battery to something only
slightly greater than the LED requires. You will find the current draw from
the battery drops considerably from the 1.3A you describe, and I doubt that
you would actually reach 1.3A anyway for any meaningful char on the display.

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