700 MCA
85 Amp Hour
It’s 12 volts

——————————————

Answer by campbelp2002
The solar panels have to put out more voltage than the battery for them to charge it. You did not state what the voltage is. And they should not put out too much or it will damage the battery. You can monitor the voltage and current manually with a multimeter, but really you need a charge controller Between the panels and batteries to automatically control it. You really need to know some electric theory. At least Ohms law, V=IR. And know how to use a multimeter.

Answer by Shut r down
12-volt panels actually put out 14 to 17 volts which is necessary to charge a 12-volt battery. If you are using 12-volt panels and 12-volt batteries, the panels should NOT be in series unless the batteries are also in series and the charge controller is rated at 24 volts. Two non-similar batteries in series might not work well together.
Power (watts) = amps X volts, so an 80 watt 12-volt panel puts out 80/12=6.67 amps which should charge a battery overnight.

Answer by roderick_young
If you are sticking with the panel you have, then about all you can do to charge faster is track the sun with it, as opposed to just laying the panel at one tilt all day long.

If the battery has not charged noticeably in two days, I would get a voltmeter/ammeter and make sure that everything is working. An 80-watt panel ought to be able to put something on there in a day.

——————————————
What do you think? Answer below!

——————————————

Answer by VLP
It is not possible to get electrical power generated from fan motor because it is motor not generator.
You must replace the motor with a generator of same size. But then you need electronic circuitry to stabilize the voltage as the wind does not have constant speed. With a proper circuit you can charge a battery.
(For your information some commercial wind generators use Three phase Induction motors but the theory of its operation as generator is complex.)

Answer by oeman50
You will not get any output from trying to reverse a fan to make a wind turbine. The motor in most (if not all) fans is an induced current rotor, the outer windings induce the current and magnetic field of the rotor without any direct contact. To make a motor like this to become a generator, you need to make the rotor produce its own magnetic field. This is usually done by supplying a current to the rotor with brushes or a slip ring, since you have to make electrical contact with a rotating part. Or, some generators can have permanent magnets on their rotors. It would be difficult to make any of these changes to an existing fan motor.

Answer by Sexy Homer
The first guy doesn’t know what he is speaking about, because an electric motor IS a generator.

However, you might have problems using the induction motor commonly used in most household appliances, like the second person said, since they have no permanent magnet, and can’t generate electricity without an input power source (which would push the motor against the incoming air, thus making power generation by the wind impossible). So using a fan motor as a generator probably would not work.

——————————————
Know better? Leave your own answer in the comments!

——————————————

Answer by billrussell42
Read the manual for your controller, which I assume is a charge controller. The superior ones use a switch mode regulator so they operate over a wide range of input voltages and output voltages.

The manual should tell you what range of output voltages it will handle, and what the optimum range is. If not, contact the manufacturer.

You might have to connect the batteries in series-parallel for 24 volts. Why are they connected in series?

.

Answer by pol6ca
You cannot charge 48 Volts with only 24V. Disconnect two batteries and do 2 twice, or you need a voltage converter to get your solar panel output up to 48V or higher, 50-52 V would be superior to charge with.

——————————————
Know better? Leave your own answer in the comments!

——————————————

Answer by sp33dstix
Well it is possible and I am sure people have done it before. Only problem that I can see with this is to prevent power surges to your ipod. Also if you do construct one of these make sure to MATCH UP THE VOLTAGES~
If you do not there is a potential(no pun intended) to do some huge damage to your ipod.
Try to look up some circuits used for solar panels to prevent these surges.

Here is someone who has done it before:

http://www.reuk.co.uk/Solar-iPod-Charger.htm

It is a really easy circuit that uses a 6 volt solar panel and a voltage regulator to get it down to 5 volts.
Google:
“diy ipod solar charger”
for more info.

Also to improve on your design, I would KEEP the original ipod cable AS IS and use a femal usb port in the circuit. That way you can use this solar charger for any usb device.

http://www.electronics123.net/amazon/pictures/cc088b.jpg

Why waste a perfectly good over priced IPOD cable?

Take Care !

Answer by Brad W
yes, i have used a colapsable solar panel to charge my cell phone and it comes with a usb adapter so im sure you could charge an Ipod with it.

Answer by snoop scotty
I use it all the time works great.

——————————————
Add your own answer in the comments!

——————————————

Answer by Paul in San Diego
Solar panels generate a small DC voltage, not AC. So, you would not need a transformer. But, you would need to wire the cells in series to generate a high enough voltage to recharge the iPod battery (the amount depends on the voltage the iPod uses versus how much each cell puts out). You might even be able to find a pre-constructed multiple-cell solar panel that puts out the correct voltage (12 volts?).

As a rudimentary battery charger for an iPod, this should work. I have seen solar powered battery chargers for cell phones for sale on the internet. The only thing I would be concerned about is regulating the charge current.

Typically, the lithium ion batteries in an iPod would need to have the charge current varied (lower as it reaches full charge) to properly charge the battery without damaging it or reducing its charge capacity. Maybe this circuit it built into an iPod already (which is why you can just charge them off your USB bus or automobile lighter outlet).

Answer by Yash
I found one very good site for science projects and ideas…it helped me a lot..i am very much impressed from their material..and also had some words with their owners.
You should also try this…

http://www.doitscience.com

——————————————
Give your own answer to this question below!

——————————————

Answer by Wordward Nerdlinger
As long as it has the proper voltage and sufficient current.

Current is current – no matter the source.

When you shop, check the specs (in comparison to the battery specs) and ask the sales engineers about your intended use.

Answer by Ivy Vine
Definitely! This is being done all the time, for instance, automatic radio equipment in remote locations, such as mountain tops.

You need a solar panel which produces enough current to keep the battery charged even if you have a couple of cloudy days. You will also want a charge controller to prevent overcharging the battery. These devices monitor the charge on the battery, and disconnect the battery from the solar panel to prevent damage to the battery.

——————————————
Know better? Leave your own answer in the comments!

——————————————

Answer by jayocular
or another idea, use the wheels turning as generators

Answer by Tom A
You are describing a perpetual motion machine.

Answer by thor
They can as long as you do not anticipate to make the power while the car is moving. Windmills are around 30% efficient. If they were 100% efficient they would not use any more energy than they make. As it is, they use three times as much energy as they could make. Not really a great idea.

——————————————
Know better? Leave your own answer in the comments!

——————————————

Answer by roderick_young
12v will not charge a 19v laptop at all.

Also, the solar panel’s power output is likely to be low if it’s a cheap panel, and even less if it’s small. A panel that can keep up with a laptop would be on the order of 2 feet by 3 feet.

——————————————
Give your own answer to this question below!

——————————————

Answer by rockblaster13
Here you go

——————————————
Add your own answer in the comments!

——————————————

Answer by Gerry
here i hope this site help you..and also they have mini course on how to build your own wind turbine..

go green!!

http://www.windpowercost.org/

Answer by sparky_dy
If you use open-vented lead-acid batteries and an alternator/rectifier as opposed to a DC generator with commutator, you do not need a charge controller except in the most extreme cases. Any surplus electricity that cannot be stored in the battery simply goes into splitting the electrolyte into hydrogen and oxygen. Just be sure to keep the cells topped up with demineralised water, and disconnect the battery if you smell sulphur (this will only ever happen in cases of severe overcharging).

——————————————
Know better? Leave your own answer in the comments!