Solar Panel wattage for my Electric Bike?

www.jkrish

Solar Panel wattage for my Electric Bike?
I am looking to purchase an Electric Bike for transport to work. I work on an Organic farm and need to save some energy up those hills.

I need help figuring out what size solar panels would be needed to charge the battery, and whether its plausible.

I'm looking at Ebay in Australia as I am immigrating down there. I prefer to afford the foldable/portable solar panel system: 80 watt, 120 watt, 160 watt, but IF necessary a bit more.

300w 3 PHASE 36v ELECTRIC REAR WHEEL
THREE 12v 17ah SLA BATTERIES (Total 36v)

or

Motor: 250 Watt brush-less DC hub
Batteries: 24V/10Ah pack, valve regulated

can anyone out there help explain to me how to figure this out?

thanks :)

Answer
wow
i;d just say abandon all hope
get a regular bike and learn to ride it
get enough of your own juice to ride 'up hills'

you work in an organic farm and you want to get one of these silly heavy slow environment destroying resource wasting electric bikes?
dude

organic farm ===> real bike
seriously

otherwise you are in for some serious electrical engineering or spending about 3 times what a good, regular bike would cost


wle

Solar Panel wattage for my Electric Bike?

www.jkrish

I am looking to purchase an Electric Bike for transport to work. I work on an Organic farm and need to save some energy up those hills.

I need help figuring out what size solar panels would be needed to charge the battery, and whether its plausible.

I'm looking at Ebay in Australia as I am immigrating down there. I prefer to afford the foldable/portable solar panel system: 80 watt, 120 watt, 160 watt, but IF necessary a bit more.

300w 3 PHASE 36v ELECTRIC REAR WHEEL
THREE 12v 17ah SLA BATTERIES (Total 36v)

or

Motor: 250 Watt brush-less DC hub
Batteries: 24V/10Ah pack, valve regulated

can anyone out there help explain to me how to figure this out?

thanks :)

Answer
You will want to have some sort of voltage regulation.
If the panel voltage drops off you don't want to discharge the batteries on your bike.
And you would not want to overcharge your batteries.

Harbor Freight has a fold out 18 to 24 vdc solar recharger.(see link)

For a work/home commute you might not want to haul the charger around everyday.
Ask the folks at the farm if you could set up a solar charging station. They might even help.
I'd suggest a bicycle locker that has the panel on top and a couple spaces for bicycles with charging stations inside, out of the elements. Your employers may like the idea.

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