I was just looking at those 3.3v 1W Warm White LEDs again..
Then, I went down stairs and looked at my two 12v batteries.
Both were indicating a full charge. Both measured at 13.2 volts.
13.2 / 4 =3.3 volts, so I'm thinking that 4 of those LEDs might be plug-n-play on one of my batteries..
The LED lighting would be off during the day.. So charging voltage should not be a problem..
A 4.62w lamp, off a fully charged car battery should last a while..
So, what is the operating temperature of these LEDs??
Do they need to be installed on a heat sink?
Thanks,
Rich