LED grow lights are a good choice if you are interested in growing indoors without a lot of hassle. Traditional grow lights generate a lot of heat and use large amounts of electricity, which raises your monthly electric bill by noticeable amounts. These LED grow lights stay cool, and use only a minuscule amount of energy.

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Not bad! Good marks on efficiency and portability. This spotlight has 20 LEDs on a rotating head. It runs up to 200 hours continuously on 3 D-size batteries.You can also plug it into a 12V DC lighter socket if you wish. It’s available from Amazon for $29.97

This is a meta-efficient bulb because it is a 12V compact fluorescent.

Available in 15-watts, equal to a 60-watt incandescent (880 lumens), or 23-watts, equal to a 100-watt incandescent (1350 lumens).

These lights have a warm color (2700K), operate at 14° to 130°, and measure 5.2"L x 2.1" diameter.