I receved my 5500k h4 led headlight from ebay
installed one before the picture
the light aim a little higher now but I was able to look at them 25-30 feet away 3.2 feet from the ground for a least 20sec with out hurting my eyes. the only down side is that the high beam are really shy. I notice it but thats about it. but I never use my high beam so its ok
i did a amp draw test with that battery and some diodes to drop the voltage
and here are the results
normal h4 4.71A 13.13V 61,8423W
h4 sylvania eco bright 4.18A 13.3V 55,594W
h4 leds 1.76A 13.64V 24,0064W
that may not be a good test for everyone because my voltage fluctuate
but that is good for me because i dont use my alt
the installation is really easy: took me 7 min per side at -10c temp
I plan to power them with resurrected labtop batteries like I do with my ewp to not drain my main battery
this is my new battery pack in construction. all those cell have a energy density of 160wh/kg
not bad for old 18650 battery.
new good 18650 li ion battery have about 220wh/kg
lifep04 have about 85-125 wh/kg
nimh have 50-80 wh/kg
nicd 40-60 wh/kg
lead acid 30-35 wh/kg
supercapacitor 4-6 wh/kg