Topic: can i run an asic on battery? (Read 2545 times)

allcominer thank you very much for your reply , cleared alot of my doubts .

I did mining on Solar Panel + Battery + Grid combination and it is very successful and running since last month.
I connected three S3 miners directly to the battery with a 24V to 12V DC-DC convertor and the converter gives constant 12.5V output.
In your case adding one more 240W solar panel will give some breath to the miners, but 2 SPs will be just ok if the panels are good. Remember, Solar Panel or Charge Controller will supply voltage well above 12V to your battery and if you are connecting miners directly to the battery when solar panels/chargecontrollers are working will just kill your miners. Use a DC-DC (12V to 12V or 24V to 24V) convertor for this purpose.

The power coming out of your charge controller will be clean.  The controller will be outputting to the batteries at optimum charging and to the DC out at 12VDC

If you can run the panels in series you could get a MPPT controller of the correct voltage/amp rating and get max power from those panels. 

If you are running the panels to separate devices each panel will need its own controller.

@ Blackouts: I see. 6-12 a year is a LOT and would indeed be VERY annoying (could cause damage etc.)

Well, ok then with your hydro plans. Just make sure you get some technical company to give you a quote and advice before you decide to go ahead, even if you make "small" units like the one in the video posted, it is quite a bit of a challenge. and investment of course.

I would also look into renting warehouses/datacenters in your country where the power supply is more predictable and stable. It might work out cheaper all in all.

where i live i get 6 - 12 blackouts / year ranging from 3h to 12h.

as for hydro we are in agreement thats the plan even if its not a quicker roi as one 600 kwh plant.

How many hours of blackouts did you have last year?


Do it in small steps. Your ROI will be still longer though.

getting grid connected with solar is a far better choice than a battery bank however keep in mind that if a blackout occurs your whole output is completely compromised. if a pole is hit by a storm or a rockfall or anything to break your wires than everything goes down including the asic farm. so if there is a blackout not only that the asic stop running because they take power from the grid but also you cant pump power into the grid back. its a fail fail recipe in case of a broken pole or simply some electricity guys doing maintenance on the grid.
also i would like to add that solar pannels are decaying in efficiency starting year 15 thats if they arent destroyed by hailstorm ice rain or by kids throwing rocks over the fence or simply burglars at work.
as for hydro the idea which looks better and better is to get more of these guys running along the river. build one in year 1 build second next year and so on till you  get a little farm of these guys depending on your needs.

Power is measured in Watts [W] or kilo Watts, [kW]. kWh is the energy a 1kW turbine produces in 1 hour.


Almost nay river, yes. However, if the height difference is small, you will need a larger flow rate to get the same power output. Also, there is a minimum height difference requirement.

Hydro
The theoretical power of a river is determined by its flow rate and head height. E.g. If the one is 1 unit the other one is 5 units or the other way around, they give the same power.

P= rho * g * H * Q ( Power (W) = density (1000kg/m3) * gravity constant (10m/s2) * head (m) * flow rate (m3/s))
Theoretical power, multiply by overall efficiency to get actual power output.

If in the vid the installation is 15kW and you need 600 kW, then you would need 40 of those in total. Or of course, one big one etc. Also don't forget that you need to own the land (I guess, depends on legislation) and similar things.

Do the investment calculations and see if you are better off with simply buying electricity off the grid. And look at some subsidies for hydro plants if really interested in that too, but the ROI will be longer.

Solar
Solar would need to be grid connected, otherwise it would be way too expensive with the batteries. Depending on the country you could sell your electricity for more, than what you buy it for. So you could make a business there even without crypto mining.

the concept presented in the vids can easily be applied to any plot of land with a river flowing near it . thing is that 600kwh might be too much for such a small home hydro system.
the generator in this movie produces 15 kwh but if you look closely the fall of the water is very small. maybe a much more rapid current and a longer canal can boost the performance . however for 600 kwh i would need a very rapid whirlpool which is not only very dangerous but also might be too powerfull for this small setup . for now these are all plans . ive completely droped solar . it is only good for a 2 asic hobby operation which will never roi . but if you plan to start small and expand big solar quickly reaches its limits. dont get me wrong im not saying its imposible to have a 1 megawatt solar setup and the batteries for it for a big operation but the price of that is ... outrageous . solar is good for a 2 asic hobby operation at most would do it to keep the ideal of decentralized money  .
 if you want to make some money  and own a real business ... cant go anything but hydro.

edit : here is another plant more to my liking : https://www.youtube.com/watch?v=oo_mP18IXMo

I found this http://www.homepower.ca/ac_hydro.htm quickly, see some examples for hydro palnt sizes. Check out Home Power System # 3...Also check it the river where it was built and the head (height difference).

A 600 kW hydro power plant is not really home scale and takes some considerable engineering, not mentioning a river that can supply that kind of power and many other things like maintenance, control systems and so on.

This is kind of far from a 12V, 160AH gel battery and 2 ASIC miners connected to it  I thought this would have been something like a hobby thing, but if you are looking to invest the sums of money you mentioned, and want to go for a hydro plant, you would need a professional firm at least.

PS. interesting hydro plant concept in he vids!

here are the new developments. ive done some math and solar is simply too expensive . the right way is to go hydro with a 600 kw / h turbine. this will be a very hard thing to pull but seems the only reasonable

way to get free  electricity . with solar there is absolutely no chance it will ever roi . im thinking about doing something like this :

https://www.youtube.com/watch?v=1FA2H1HiL3o

another vid same concept.

https://www.youtube.com/watch?v=kxGGCmnJl1w

 waiting for your opinions. calculus says 60 k usd for 600 kw... but i might be too optimistic. 600kw will suport about 2 PH worth of asics . which to buy is about 1.5 - 2 mil usd.

Devices draw as much power from the source, as much they need. The ASIC probably wouldn't be fried, on the other hand it might be sensitive to voltage fluctuations that are normally handled by a PSU in a computer. If you will not be using a PSU I think it would be worth your while to look at some other methods like DC/DC converters that provide a continuous output. So you wouldn't go above 12V too much.

Regarding the battery, it may not be nice to charge them continuously once they are at 100%. A good solar charge controller (matching the battery type) is a must-have that can solve this by cutting off input power once this happens.

Also make sure you don't always deplete the batteries to 0% since this shortens their lifetime considerably. It comes down to economic calculations, what is worth more? Having more batteries and run them down to only 50% or have fewer batteries and run them down to 20%, but replace them more often.

thank you for the link. a step in the right direction.

I love the idea i hope you can show pictures after.  Also after if you are able to show pricing and how long to pay off vs regular power.  I would not mind trying solar I just could not justify it currently with .10 KWH electricity.   

iv not quite got to this size but i run a bunch of USB miners like this.
if you need some help its a crap looking site but most of the info is simple and good
http://www.freesunpower.com/example_systems.php

the odds of something catching fire are small if you use the correct wiring and everything is securely fitted and its hard for a short to happen

if your really worried about clean electric id recommend tacking a UPS just before the miner as they are designed to stop dirty power getting anywhere near the device. there also cheap you dont need one with a big battery just one to iron out anything bad in the power supply but that said if your using batterys make sure everything goes through them first and that will clean the electric to a better standard than AC coming through the wall

Exactly     Need moar batteries 

no sir . there will be a array of batteries and several solar pannels . or i could simply go hydro and run everything on one battery.

although im a begginer at wiring and setting up the system. im very concerned about something catching fire , shorting wires , not providing clean power due to interference... id love to talk with you guys about that stuff maybe you could show me some links and your green setups. would be awesome.
thank you.

Running it should be fine, Thats not the problem I can see, Are your solar panels only going to be without sun for 5 or less hours?

Nah, a big part of the fun is figuring it out yourself.
Enjoy!

can you provide some links with reading materials .
im a bit worried about the " clean power " part. what happens if the power isnt clean and what could be the cause of that. how to avoid it .
thank you .