Modified. I really have never had any problems running gadgets off of modified sine wave inverters. I have had one for 7 yrs that I keep in the truck for road trips, running a laptop, DVD player etc.
I bought one of these and let me say that it is great to have the peace of mind of giving my family power (lights) in a blackout. The customer service was the best I have seen in years. I like the fact that you can hook this up to your solar battery bank and crank up the power on the not so sunny days. Thanks Practical Preppers. Keep up the good work.
You're exactly right on the radio's range. Using repeaters will, of course give you much greater range. But then, you risk giving away your location if tactical comms is your intention. I've spoken personally with SP1 from my home in Oregon. IMHO, the two of you are the most organized & intelligent people I have seen on UA-cam. B.A. Forster AC7AA
Just found your channel and you have got lots of cool stuff to look at. I would love to see your bike video. I think that would be a product people would buy. Get in your exercise, charge up your bank of batteries, possibly add a solar panel to complement, use electricity for a few hours, then charge it up again for the evening. Man, I want one now! The pulley needs a bracket for tension. Great Channel!!!
If you are a prepper, you already have plenty of water, food, supplies etc. etc. A little bit of electricity goes a long way when you don't have it! The key is to be able to power for things like communication, life saving medical devices. If you ever saw someone who could save their child from an asthma attack or someone who could't ask for help on their phone or 2-way radio due to lack of power then you don't get it. This issue isn't "mismatch" of power. It is power - period.
This device is for running small but critical devices. I can turn the handle for one hour and produce ~ 150-200 watts. A cell phone charger uses less than 24 watts/hr thus I just made enough power for 6 full charges. An Asthma rescue takes 15 minutes @ about 75 watts of power. Crank for 30 minutes and save a life. This is for people who do not have solar and generator options. Do the math, match up the device with appropriate devices and you won't have snake oil.
That gives me an idea to watch for those small toy trucks and cars that children ride around in the yard. Seems to me a 12 motor, when turned would produce some DC current back to a battery. I liked the tool box idea also....keeps everything contained and easy to transport without the fear of yanking wires from their sockets. Thanks for posting. I understand that those toys may have a gear reducer, which actually means you may have to have more RPM to generate back to the battery.
This is a hand wound PMG ( Permanent magnet generator) built for low rpms it starts producing 12volts @ 25 rpms and begins to saturate the stator at about 50 rpms. Thanks
It is set to run off of a bike. Just remove the belt from the CAW and use a bike on a simple bike stand with tire placed into the PMG groove and away you go. Sorry I didn't explain the bike part.
That is an awesome set up. Do you know the brand or where to buy the magnet motor? I would like to make my own. I wouldnt mind seeing the large pully being high enough to sit on a flat surface and be able to turn.
You would actually decrease the mechanical advantage that way. You would shorten the moment arm thus requiring more energy to turn the pulley. Increase speed - yes but make it harder to crank.
Fantastic!!! Could you give the stats of the current that comes out : tension, intensity, frequency, and also whether there's a diode somewhere that tells if it's charging, and how full the battery is? Besides will you ship it worldwide?
for a home operation, you can extend the power and range of this radio with a extra $200-$300 with a travel HAM radio tuner and a antennae amplifier with it directly connected to the crank-a-watt, would extend your range into the hundreds or thousands of miles in a small package that can fit in a shoulder bag(add a 12v atv battery and a small solar trickle charger and you're independent of the grid totally). the HF radio frequency would open more communication possibilities. even portable ones.
Correct me if I'm wrong. Wouldn't you maximize mechanical advantage by moving the handle on the crank wheel closer to the center, maybe half way up. On the outside of the wheel it's easier to turn, but since it's already relatively effortless you might be able to significantly increase the speed at which you spin the alternator's rotor without significantly increasing the required effort. Worse case scenario you'd simply reduce the amount of time to fully charge while breaking even mechanically.
Thank you Sir! This thing is bad to the GREEN bone! I can see hooking it up to a bike and making 500 miles a week! Live almost forever! Add a 3D realistic view hood with an ending loop going off of a cliff in a hanglider with some major tunes plugged in and you could probably run a town! In Colorado or Washington, of course!
How many amps is this pma outputting at 30 rpm's? How long would it take to recharge this battery from 50% state of charge at 30 rpm's? Are you using a pure sine wave inverters being your running medical equipment? Thanks and love your video's
1) are you asking about the output of the battery or the output of the alternator? 2) It could discharge the battery faster if you plug in items that draw a total of 400 watts. 3) This depends on the alternators output. For that Egineer775 would need to list some of the specs.
Hi Mate, why not put a bicycle crank through the centre of the large spindle, put it on the ground and have pedals on both sides and use your legs to power it up. That way it might be less strenuous as you can go a lot longer?? What do you recon? Great Idea!!
theres battery protection cables that run around $15 - $20 that will shut of the flow if it drops below a certain voltage. i think the $15 cuts out at 10.5 if i remember right. Available in most online trucker stores. They have a 10amp rating but i doubt you would go over that and for this system i would put one in it. I have girls as well and they would get cranky and lazy and just kill the battery rather then crank. Thank you for the vid was leary of getting one till i saw this vid.
nice vid.on hand crank generator, The last vid you posted I asked the following question....I asked about ur vid on a harbor freight aux well pump 12 volt assist, what model and if it worked on a shallow well. I left comments before several times. If you could advise I would appreciate it. Thanks for your time.... updat :I am about to give up on asking this question if I do not get a reply,
Quick question: Considering just a 50% discharge... 1) how much power can the Crank-a-watt battery provide? 2) wouldn't a larger 400W inverter discharge the battery faster as it will draw 2x the current? 3) how long will it take to recharge said 50% battery charge by cranking at low speed (as you mentioned)? Thanks in advance for the additional info! :)
Thank you for the great review and it looks awesome. I was surprised to you is not wired in automotive cigarette lighter outlet and USB port. This would save the inefficiency of the inverter and wall wart. Wiring instructions would be appreciated!
You could also add a 12V DC cigarette socket right off the battery to power/charge a host of things directly with 12V DC. No efficiency loss in converting DC to AC to DC again to charge a device.
I am in the process of making something like this that a can connect to the downpipe of my rain catchment system. Kind of like a water wheel/wind generator all in one. Just on a smaller scale.
Great 'gizmo' ;) . .. I'd suggest that with the weight of the battery, that this 'unit' could be easily adapted for exercycle , or even a 'treadle' with the right 'mass' of flywheel for easy 'pumping out the juice ! ' . . .*( Even a 'teeter totter' could be 'linked' , thereby making it 'fun' for the kids, or ADULTS ! < Grownups don't make themselves have fun as much as WE SHOULD ! ! ! Low rpm devices can use hardwood bearings, greased or oiled, with felt washer 'seals' endless possibilities!
1) sorry should've specified... both 2) indeed :) but have you tested how long this rig can power continuously loads of 50W, 100W, 200W or 400W before draining the battery to 50%? 3) Well, I was referring to the one that comes with that system, or the one that Engineer775 installed (if different) or an ideal optimal alternator for the rig. Those specs should be available on all 3 cases. I'm interested knowing what autonomy can this provide before recharge action will be needed. Thanks again! :)
I'm a cyclist who trains on a stationary trainer indoors during the winter months. Do you know of any crank type generators that can be charged by bicycle?
It has a 5 volt, 500 milliamp USB port on the inverter. You keep missing the point of this device. If you you lived in apartment with no solar or generator option how would you produce electricity? If you have a solution for a city or urban prepper I am all ears. And yes is is very easy to run the crank-a-watt with a bicycle.
i also use both chairs as backup power i have a computer backup power supply i got at staples for 105 bucks has 6 outlets on it and produces 985 watts continuasly and a peak of 1500 watts 110volt ac i then made a patch cord out of the ups that plugs right into the chair again under the hand controller. can run the frige or microware power up the furnice k-1 one at a time.from full charge i can get about 6 hours of max output or about 10 hours if im conseritive thats per chair gl richard
What would stop you from hooking a small electric motor to it? It could be self sustained, even from dead, with the help of the crank handle to start it. I assume you would have to use some for of gear reduction to use a motor small enough to not use all the power that is produced. Any downsides to this idea?
Is this the same one SP1 showed a while back that he was T&E? I seem to recall the one he had could be attached to a bicycle and pedaled as well, same with this one? Could this charge a bank of batteries quickly using a bicycle...in case solar is unavailable for an extended period, i.e. Yellowstone super volcano puts ash cloud over the US?
Lead acid (car) batteries can only handle a 50% discharge. There are other LA battery types that can handle 100% discharge. DC Marine batteries contain more lead per plate. DC Marine batteries can usually handle 75% depth of discharge, sometimes up to 100%. Sealed AGM batteries contain the highest amount of lead per plate and are usually rated for 100% D.o.D., amp hours (battery runtime) is usually higher also. Batteriesplus dot c o m is a great battery resource.
Getting your spin to work out wouldn't be too hard. You could even build your own crankset and customize your ratios for a lower rpm. If there's still and issue, larger pulley wheels would probably take care of it.
i love it, i would charge it with my intelligent 12/8/2/ amp charger and have it ready to go all the time and then crank as needed. i would hook it to a pair of T105, 6 volt golf cart batteries in parallel :)
At a moderate pace, what sort of watts are you putting out, or better yet, how many amps, while charging a battery? Can you put 3-5A into that battery by hand?
engineer775 Practical Preppers wow thats really impressive. i can appreciate that. Does Tim also sell these as just an alternator to use with our own application?
I wonder if you can take a pump and feel little cups on the crank and the weight of the water what turned crank and when you wanted to stop you turn the pump off do you think that would work
I had the same question when I was checking on solar panels as I have a Cpap and the answer is yes with the correct setup. You have to figure the wattage needed for the machine and match the system. Sorry I do not remember the formula to find out.
have been thinking about making a generator of sorts, but done have $500+ to spend haha, was thinking more along the lines of geared down ( with pulleys ) car alternator ?.. ( all trial and error of course ) depending on the size of pulleys, and proably go down 2 or 3 times but a ratio close to 100:1 ( 150 maybe, need todo some tests) .. guessing could sustain 50rpm(ish) which is about 5,000rpm, give or take? then if i can attach that box (?) via the pulley to a bike. thatll go up even more?
That battery meter could be improved if it displayed percent instead of volts or simply add a label with a healthy voltage range. Otherwise, I like it.
Do solar panels put out enough current to charge the batteries in an electric wheelchair? If so I was thinking of making a roof out of solar panels on my chair. Any ideas?
Try to run as much off the battery as possible. It's really inefficient to go from 12vdc to 110ac and then back to 12vdc. The laptop and the drill battery charger can run directly off 12vdc.
I dont know how to do the math. How do you figure out if the device will run a particular appliance, say, a window ac unit or an electric space heater. Would you have to crank all day?
If I wanted we wanted to possibly reproduce this without purchasing it, how would someone such as myself go about doing it, and finding the parts for it ?...I wouldn't need anything but the alternator, and the price point seems a tad bit steep to me.
1 scotter store and one hover round both are 24 volt i input the panels power under the hand controller there is a 3 proged round plug there left hole pos right neg bottom also a ground i dont use the bottom hole 2 bucks for the plug at home depot the scotter store chairs built in charger is 4 amps 24v and the hover rounds charger is 5 amps 24v this 200 panel is 11.3 anps so 3 times as fast to charge the scotter store chair on solar then is own charger
If one of your critical loads is a cell phone charger wouldn't make more since to charge it direct from a 12 volt port to USB adapter rather than go through the inefficiency of the inverter. You can crank for an hour and produce 150-200 watts, that's about right, but wouldn't your effort be more valuable raising food or defending the fort. Cranking consumes calories that have to be produced by someone. The problem is a huge mis-match between power in and power out. Give realistic expectations.
Interesting. The girl turning the crank at the start was not in a comfortable position and would not have worked much longer. Ideally she would use her larger leg muscles to turn the crank with some kind of cycling mechanism.
Do you know how many wats do you produce with your hand? LITTLE. If you would hooked up with bicycle you can produce 150W per hour. And you can paddle one hour. You cannot circle with your hand for one hour.
Anybody every tried charging up AAA NiCd batteries by muscle? It took a a few hours of leg work. Now multiply this when trying to charge a car battery. Some ideas are just not practical.
Modified. I really have never had any problems running gadgets off of modified sine wave inverters. I have had one for 7 yrs that I keep in the truck for road trips, running a laptop, DVD player etc.
I bought one of these and let me say that it is great to have the peace of mind of giving my family power (lights) in a blackout. The customer service was the best I have seen in years. I like the fact that you can hook this up to your solar battery bank and crank up the power on the not so sunny days. Thanks Practical Preppers. Keep up the good work.
No need. We have already tested a rear bike tire placed directly in the small pulley and it works great on a simple bike trainer.
You're exactly right on the radio's range. Using repeaters will, of course give you much greater range. But then, you risk giving away your location if tactical comms is your intention. I've spoken personally with SP1 from my home in Oregon. IMHO, the two of you are the most organized & intelligent people I have seen on UA-cam. B.A. Forster AC7AA
Just found your channel and you have got lots of cool stuff to look at. I would love to see your bike video. I think that would be a product people would buy. Get in your exercise, charge up your bank of batteries, possibly add a solar panel to complement, use electricity for a few hours, then charge it up again for the evening. Man, I want one now! The pulley needs a bracket for tension. Great Channel!!!
If you are a prepper, you already have plenty of water, food, supplies etc. etc. A little bit of electricity goes a long way when you don't have it! The key is to be able to power for things like communication, life saving medical devices. If you ever saw someone who could save their child from an asthma attack or someone who could't ask for help on their phone or 2-way radio due to lack of power then you don't get it. This issue isn't "mismatch" of power. It is power - period.
This device is for running small but critical devices. I can turn the handle for one hour and produce ~ 150-200 watts. A cell phone charger uses less than 24 watts/hr thus I just made enough power for 6 full charges. An Asthma rescue takes 15 minutes @ about 75 watts of power. Crank for 30 minutes and save a life. This is for people who do not have solar and generator options. Do the math, match up the device with appropriate devices and you won't have snake oil.
There is plenty of room in the box for a battery tender. I am using a small solar panel and Morningstar Sunguardcontroller to keep the battery full.
Very cool device. Your always testing and doing the work and we get to sit back and learn from it. That's very valuable.
That gives me an idea to watch for those small toy trucks and cars that children ride around in the yard. Seems to me a 12 motor, when turned would produce some DC current back to a battery. I liked the tool box idea also....keeps everything contained and easy to transport without the fear of yanking wires from their sockets. Thanks for posting. I understand that those toys may have a gear reducer, which actually means you may have to have more RPM to generate back to the battery.
This is a hand wound PMG ( Permanent magnet generator) built for low rpms it starts producing 12volts @ 25 rpms and begins to saturate the stator at about 50 rpms. Thanks
If you buy one from practical preppers you will not get ripped off. I bought one and got it a week later. Let me say that it is well worth the money.
It is set to run off of a bike. Just remove the belt from the CAW and use a bike on a simple bike stand with tire placed into the PMG groove and away you go. Sorry I didn't explain the bike part.
Looks useful. It also look easy to build for anyone electronicly enclined. I do not know where to get that kind of alternator off hand though.
Wouxun KGUV2D. works well for 2-10 miles depending on terrain and antenna.
That is an awesome set up. Do you know the brand or where to buy the magnet motor? I would like to make my own. I wouldnt mind seeing the large pully being high enough to sit on a flat surface and be able to turn.
You would actually decrease the mechanical advantage that way. You would shorten the moment arm thus requiring more energy to turn the pulley. Increase speed - yes but make it harder to crank.
Fantastic!!!
Could you give the stats of the current that comes out : tension, intensity, frequency, and also whether there's a diode somewhere that tells if it's charging, and how full the battery is?
Besides will you ship it worldwide?
for a home operation, you can extend the power and range of this radio with a extra $200-$300 with a travel HAM radio tuner and a antennae amplifier with it directly connected to the crank-a-watt, would extend your range into the hundreds or thousands of miles in a small package that can fit in a shoulder bag(add a 12v atv battery and a small solar trickle charger and you're independent of the grid totally). the HF radio frequency would open more communication possibilities. even portable ones.
Correct me if I'm wrong. Wouldn't you maximize mechanical advantage by moving the handle on the crank wheel closer to the center, maybe half way up. On the outside of the wheel it's easier to turn, but since it's already relatively effortless you might be able to significantly increase the speed at which you spin the alternator's rotor without significantly increasing the required effort. Worse case scenario you'd simply reduce the amount of time to fully charge while breaking even mechanically.
Thank you Sir!
This thing is bad to the GREEN bone!
I can see hooking it up to a bike and making 500 miles a week!
Live almost forever! Add a 3D realistic view hood with an ending loop going off of a cliff in a hanglider with some major tunes plugged in and you could probably run a town! In Colorado or Washington, of course!
How many amps is this pma outputting at 30 rpm's? How long would it take to recharge this battery from 50% state of charge at 30 rpm's? Are you using a pure sine wave inverters being your running medical equipment? Thanks and love your video's
where do i get the alternator and how should it cost? the rest i know how to build? GOD BLESS GREAT IDEA.
IT is simpler than that. Just place a bike tire into the small pulley and pedal. I will do a follow up video.
Whats the output (wattage) of the perm. mag. DC generator ? very cool set up ! thanks
It is ready to go for a bike. Just need a cheep stationary bike trainer and place tire in the groove ( remove the belt first) then pedal away.
1) are you asking about the output of the battery or the output of the alternator?
2) It could discharge the battery faster if you plug in items that draw a total of 400 watts.
3) This depends on the alternators output. For that Egineer775 would need to list some of the specs.
Hi Mate, why not put a bicycle crank through the centre of the large spindle, put it on the ground and have pedals on both sides and use your legs to power it up. That way it might be less strenuous as you can go a lot longer?? What do you recon?
Great Idea!!
how many watts can you produce continuously for one hour, with that thing?
2nd on your Q.
i bought one, cant wait to try it out!
Basic and simple. Now I need to modify and alternator to do the same thing.
theres battery protection cables that run around $15 - $20 that will shut of the flow if it drops below a certain voltage. i think the $15 cuts out at 10.5 if i remember right. Available in most online trucker stores. They have a 10amp rating but i doubt you would go over that and for this system i would put one in it. I have girls as well and they would get cranky and lazy and just kill the battery rather then crank. Thank you for the vid was leary of getting one till i saw this vid.
nice vid.on hand crank generator, The last vid you posted I asked the following question....I asked about ur vid on a harbor freight aux well pump 12 volt assist, what model and if it worked on a shallow well. I left comments before several times. If you could advise I would appreciate it. Thanks for your time.... updat :I am about to give up on asking this question if I do not get a reply,
Quick question: Considering just a 50% discharge...
1) how much power can the Crank-a-watt battery provide?
2) wouldn't a larger 400W inverter discharge the battery faster as it will draw 2x the current?
3) how long will it take to recharge said 50% battery charge by cranking at low speed (as you mentioned)?
Thanks in advance for the additional info! :)
Thank you for the great review and it looks awesome. I was surprised to you is not wired in automotive cigarette lighter outlet and USB port. This would save the inefficiency of the inverter and wall wart. Wiring instructions would be appreciated!
You could also add a 12V DC cigarette socket right off the battery to power/charge a host of things directly with 12V DC. No efficiency loss in converting DC to AC to DC again to charge a device.
I am in the process of making something like this that a can connect to the downpipe of my rain catchment system.
Kind of like a water wheel/wind generator all in one. Just on a smaller scale.
Great 'gizmo' ;) . .. I'd suggest that with the weight of the battery, that this 'unit' could be easily adapted for exercycle , or even a 'treadle' with the right 'mass' of flywheel for easy 'pumping out the juice ! ' . . .*( Even a 'teeter totter' could be 'linked' , thereby making it 'fun' for the kids, or ADULTS ! < Grownups don't make themselves have fun as much as WE SHOULD ! ! ! Low rpm devices can use hardwood bearings, greased or oiled, with felt washer 'seals' endless possibilities!
1) sorry should've specified... both
2) indeed :) but have you tested how long this rig can power continuously loads of 50W, 100W, 200W or 400W before draining the battery to 50%?
3) Well, I was referring to the one that comes with that system, or the one that Engineer775 installed (if different) or an ideal optimal alternator for the rig. Those specs should be available on all 3 cases. I'm interested knowing what autonomy can this provide before recharge action will be needed. Thanks again! :)
I'm a cyclist who trains on a stationary trainer indoors during the winter months. Do you know of any crank type generators that can be charged by bicycle?
It has a 5 volt, 500 milliamp USB port on the inverter. You keep missing the point of this device. If you you lived in apartment with no solar or generator option how would you produce electricity? If you have a solution for a city or urban prepper I am all ears. And yes is is very easy to run the crank-a-watt with a bicycle.
Interesting,never seen one before.
that's cool! kind of looks like the john titor time machine unit
i also use both chairs as backup power i have a computer backup power supply i got at staples for 105 bucks has 6 outlets on it and produces 985 watts continuasly and a peak of 1500 watts 110volt ac i then made a patch cord out of the ups that plugs right into the chair again under the hand controller. can run the frige or microware power up the furnice k-1 one at a time.from full charge i can get about 6 hours of max output or about 10 hours if im conseritive thats per chair gl richard
What would stop you from hooking a small electric motor to it? It could be self sustained, even from dead, with the help of the crank handle to start it. I assume you would have to use some for of gear reduction to use a motor small enough to not use all the power that is produced. Any downsides to this idea?
man thats great!I would love to have 1 :)
Is this the same one SP1 showed a while back that he was T&E? I seem to recall the one he had could be attached to a bicycle and pedaled as well, same with this one? Could this charge a bank of batteries quickly using a bicycle...in case solar is unavailable for an extended period, i.e. Yellowstone super volcano puts ash cloud over the US?
Lead acid (car) batteries can only handle a 50% discharge. There are other LA battery types that can handle 100% discharge. DC Marine batteries contain more lead per plate. DC Marine batteries can usually handle 75% depth of discharge, sometimes up to 100%. Sealed AGM batteries contain the highest amount of lead per plate and are usually rated for 100% D.o.D., amp hours (battery runtime) is usually higher also. Batteriesplus dot c o m is a great battery resource.
Can you tell us about the weight? EMP proof? Great invention.
the case is heavy duty plastic NO IT is not EMP Proof it should weight about 50lbs with all those items inside and out
Thanks you Scott ! should have good recovery .
Getting your spin to work out wouldn't be too hard.
You could even build your own crankset and customize your ratios for a lower rpm.
If there's still and issue, larger pulley wheels would probably take care of it.
I have a simple question, your handheld radio what kind is it? How well does it work over long distances? Thanks
i love it, i would charge it with my intelligent 12/8/2/ amp charger and have it ready to go all the time and then crank as needed. i would hook it to a pair of T105, 6 volt golf cart batteries in parallel :)
Great idea.
At a moderate pace, what sort of watts are you putting out, or better yet, how many amps, while charging a battery? Can you put 3-5A into that battery by hand?
At about 25 rpms I am getting 10 amps actually. This Alternator is a PMA and is hand wound to get high output at low RPMs
engineer775 Practical Preppers wow thats really impressive. i can appreciate that. Does Tim also sell these as just an alternator to use with our own application?
I wonder if you can take a pump and feel little cups on the crank and the weight of the water what turned crank and when you wanted to stop you turn the pump off do you think that would work
I had the same question when I was checking on solar panels as I have a Cpap and the answer is yes with the correct setup. You have to figure the wattage needed for the machine and match the system. Sorry I do not remember the formula to find out.
have been thinking about making a generator of sorts,
but done have $500+ to spend haha, was thinking more along the lines of geared down ( with pulleys ) car alternator ?.. ( all trial and error of course ) depending on the size of pulleys, and proably go down 2 or 3 times but a ratio close to 100:1 ( 150 maybe, need todo some tests)
.. guessing could sustain 50rpm(ish) which is about 5,000rpm, give or take?
then if i can attach that box (?) via the pulley to a bike. thatll go up even more?
From zero to full charge, how long does it take to crank?
Could you hook that up to a stationary bike, or would the higher RPM's be too much?
ohh we have a short in the box now...the box melts catches fire and burns house down. I would put it inside a steel box.
That battery meter could be improved if it displayed percent instead of volts or simply add a label with a healthy voltage range. Otherwise, I like it.
awesome!
modified or pure sine wave invert. have u had any problems running any of ur electronics
Looking forward to the video using a bike to help run this.
I am interested in the internal generator. What can you tell me about it ? Name, manuf, model # ?
I don't get the electrical side. I see you installed the battery display. How do you know what 50% of the battery power is?
Do solar panels put out enough current to charge the batteries in an electric wheelchair? If so I was thinking of making a roof out of solar panels on my chair. Any ideas?
Very cool add a plug to it so the batterie has a full charge or a 1 watt solar batterie to trickle charge it.
would it be worth using the dewalt with batt 1 to crank it and charge batt 2 along with lots of other stuff? haha
Try to run as much off the battery as possible. It's really inefficient to go from 12vdc to 110ac and then back to 12vdc. The laptop and the drill battery charger can run directly off 12vdc.
You don't sell this anymore?
Can you please do a how to attach a stationary bike to this generator video?
Link in the description. Thanks
I dont know how to do the math. How do you figure out if the device will run a particular appliance, say, a window ac unit or an electric space heater. Would you have to crank all day?
what kind of radio did you have chargeing in the video
how about using a small dog(hamster/wheel style)to crank up the power. Most dogs love running. i am sure a wheel could be adapted.
So the current that comes out is 12 volts alternative?
If I wanted we wanted to possibly reproduce this without purchasing it, how would someone such as myself go about doing it, and finding the parts for it ?...I wouldn't need anything but the alternator, and the price point seems a tad bit steep to me.
1 scotter store and one hover round both are 24 volt i input the panels power under the hand controller there is a 3 proged round plug there left hole pos right neg bottom also a ground i dont use the bottom hole 2 bucks for the plug at home depot the scotter store chairs built in charger is 4 amps 24v and the hover rounds charger is 5 amps 24v this 200 panel is 11.3 anps so 3 times as fast to charge the scotter store chair on solar then is own charger
THE PMG is 400 wattts
WHERE DO YOU GET THOSE PLEASE PM ME WITH THE INFO THANKS GOD BLESS U AND URS
Do you sell these...?
do you have a voltage discharge percent curve?
If one of your critical loads is a cell phone charger wouldn't make more since to charge it direct from a 12 volt port to USB adapter rather than go through the inefficiency of the inverter. You can crank for an hour and produce 150-200 watts, that's about right, but wouldn't your effort be more valuable raising food or defending the fort. Cranking consumes calories that have to be produced by someone. The problem is a huge mis-match between power in and power out. Give realistic expectations.
Interesting.
The girl turning the crank at the start was not in a comfortable position and would not have worked much longer. Ideally she would use her larger leg muscles to turn the crank with some kind of cycling mechanism.
Type in crank a watt liberty.
I have a video showing these running with a bike.
Handcrankedgenerator
another homerun,,,keep on doing
Mentioning medical equpment....CPAP machine? Electric wheelchair charger?
How much cranking do you have I mean how much cranking do the kids have to do to charge the battery?
what radio is that ?
Do you know how many wats do you produce with your hand? LITTLE. If you would hooked up with bicycle you can produce 150W per hour. And you can paddle one hour. You cannot circle with your hand for one hour.
approximate retail price????????
this is a good idea but u have way out wether food or gas is cheeper for this =3-
how much?
cool
What about you sensitive Electronics?
Anybody every tried charging up AAA NiCd batteries by muscle? It took a a few hours of leg work. Now multiply this when trying to charge a car battery. Some ideas are just not practical.
Can you build me 1 I'll pay for it and shipping?
How much