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Go Back   Fun In B.C. > Adventure B.C. > General outdoor Discussion

General outdoor Discussion For any outdoor adventure. Trail talk, camping, skiing, hiking, etc If itís outside and fun talk about it here.

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  #1  
Old 09-27-2013, 11:30 AM
bcmaxx bcmaxx is offline
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bicycle battery power anyone on here

since my dad has given up drinking he has began riding bicycle, he went from 17km loops to several day/week trips off 600km or more. I want to rig up a battery/charging system for him, for his headlight, charger for phone, laptop and battery so he can stay connected on his treks. I need some info though hoping someone on here may have some clue or advice? was planning a dynamo 5v , high mah, nimh rc battery, deans connectors,led voltage display,12 v 15 watt supplemetal solar panel. will 5 volt charge a 12 volt battery?
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  #2  
Old 09-27-2013, 12:31 PM
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Rig up some sort of system with solar panels?
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  #3  
Old 09-27-2013, 12:45 PM
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PM Evan the blue on here hes a electrician
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Old 09-27-2013, 12:54 PM
bcmaxx bcmaxx is offline
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ok thanks , I have amp/battery capacity questions
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Old 09-27-2013, 01:14 PM
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Just use an old fashioned dynamo with a voltage regulator to charge a 12v battery.
Then you can use 12v sigarette type charger to charge anything you want. There are lots of 12v dynamos on ebay.
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Old 09-27-2013, 03:30 PM
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how about a small alternator and MC battery?
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  #7  
Old 09-27-2013, 04:16 PM
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You should put a lever/brake(or shifter) cable in a handy spot so he can swing the dynamo/alternator off the tire for steep climbs then could put it back in contact with the tire when going downhill for free power generating.

And only way 5v will charge a 12v battery is through a step up converter. Ineffiecent though cause you low voltage high amps to make high voltage low amps.
http://www.ebay.ca/sch/sis.html?_kw=...ule%2FDIY+Kits

Those bike dynamo's probably put out AC voltage so you need to get a rectifier along with a regulator. Some guys say they are also hard on the tires, can wear out sidewalls pretty quick. Maybe one mounted horizontal so it rubs on the tire tread instead?
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Old 09-27-2013, 04:26 PM
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Those bicycle dynamos have a system build in to be turned on and off. They put out ac (any generator does), so you'll need a rectifier and voltage regulator to charge any battery.
Radio shack (or the source now) has 12v brick batteries for house alarms. You could run that on a bike if you want constant power available.
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Old 10-03-2013, 06:24 PM
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your most cost effective and man power efficient method I know of is solar... Solar power is at a strange state where its becoming more and more cost effective so a little searching can find fantastic deals on solar stuff anyhow here is a great smallish 15watt panel http://www.ebay.com/itm/15-Watt-12V-...em27d632 c27e

it would charge a Iphone from dead to 100% if left in direct sunlight in about 4 hours or so, a 5watt system could be rigged up permanently on a backpack or something and would charge a phone more than 50% after a day of biking and since phones last around 15h when left on this would be MORE than adequate for a few hours of use daily(checking gps/time/music etc)
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Old 10-04-2013, 08:04 AM
bcmaxx bcmaxx is offline
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Awesome info everyone. So yes thinking solar as amain source. He travels with a trailer so there's a little more room for a bigger panel. Still looking for a suitable battery
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  #11  
Old 10-04-2013, 08:14 AM
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sounds like effort... show pics when done
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