If you want to use this 10w led with an 12V (14.4V) lead sealed acid batterie you wiil nead an DC constant current led driver.
The light of this led is more brighter then an 10W CFL 12v bulb. The generate light is very warm and flicker free.
Great advantage of this 10w led over CFL bulbs is that you have maximum power of lights almost instantly and longer life time.
Emitted Color : warm white 1PC
Intensity Typ. : 800-900Lm
Viewing Angle : 160°
Forward Voltage : 9-11V
Color Temperature: 3000-3500K
Ebay price: $4-$5 with shipping