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Step 4Christmas Lights as Current Regulators
If your panel is too big for your battery, you'll want a current regulator to keep from boiling your battery.
One way to do that is by putting an incandescent light bulb in series with your battery as shown here. Here I'm using christmas tree lights. Play with an ammeter and try putting multiple bulbs in series or parallel til you get the current limiting you want. Signal lights from cars can also work.
The clothes iron seen here is nothing but a big resistor, that can work also to reduce current to your battery. The small DC motor seen here is useful for testing scrap batteries. You can immediately feel how much current a battery can deliver.
One way to do that is by putting an incandescent light bulb in series with your battery as shown here. Here I'm using christmas tree lights. Play with an ammeter and try putting multiple bulbs in series or parallel til you get the current limiting you want. Signal lights from cars can also work.
The clothes iron seen here is nothing but a big resistor, that can work also to reduce current to your battery. The small DC motor seen here is useful for testing scrap batteries. You can immediately feel how much current a battery can deliver.
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