How come when i hook up this 12volt 50 watt halogen bulb it doesnt light up?

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Sdfaad

So I wanted to make a bike light so i bought a halogen bulb the rquires 12v 50 watt power. I put some batteries in series to make 12volts but when i connect the bulb it does nothing. why doesnt it do anything>? I even stepped up the volts to 18 with two 9 volt batteries but still nothing. Any ideas?

Answer
50 watts is a lot of power for most batteries. It is likely that your batteries have too much internal resistance and cannot deliver the amount of current required.

To determine this, connect a voltmeter across the light when you connect it the batteries. You will probably see that the voltage drops to much less than 12 volts.

Whats a good solution to charge a small lawn mower battery on a bike?

Z

Ok my bicycle has dual 55 watt fog lights on there i use at night (there VERY bright), and i was wondering what i could use that is self contained on the bike to keep the battery charged up?

Also i have a battery charger but i dont wanna be dependent on it for my bike lights.

Answer
for 29 dollars at Northern tool you can buy a solar battery charger that puts out 1.8 amps during the daytime. If you can park your bike in the sun or just the battery and charger...I have used this system successfully on 12volt boat batteries for years...but it is just a trickle charger

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Title Post: How come when i hook up this 12volt 50 watt halogen bulb it doesnt light up?
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