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Author Topic: Electricity backup for antminer's  (Read 3024 times)
smaxz
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June 13, 2016, 11:40:05 PM
 #21

so is op's two s7's still hashing away?

power outages included?

or did you find an alternative solution to the ups issue.

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tolip_wen
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June 19, 2016, 09:17:49 PM
 #22

Hello everyone i just bought two antminer s7's. Where i live, i have to pay very less for electricity. But the problem is the electricity uptime is very poor here, i face 5 to 6 power cuts a day with around 40 minute to 1:30 hours. I want to ask what kind of backup power should i use. i am thinking about getting a 3kva inverter. Please suggest me other options.

Most ASICs(the actual chip that does the work) run on less than 1VDC but very very high current.
Most 'miners' operate on 12VDC.
Most power company power is over 100VAC.

A UPS looses over 10% of the power input to charge the batteries.
It looses at least another 10% when making AC from the stored battery power.

A typical Platinum 12VDC power supply looses ~10% making 12VDC from the wall voltage.

If one were to find the 'best' option, it would probably be to power the miner from 12VDC batteries directly during a utility outage.
If you want your backup to survive more than 1-2 outages you could to plan on having DOUBLE capacity available.

Even with the best available option it may not be a good idea.

YMMV
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June 25, 2016, 07:31:55 AM
 #23

Can't this problem be solve through the use of solar energy?

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July 02, 2016, 07:33:31 PM
 #24

Can't this problem be solve through the use of solar energy?

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For all we know he might be located in the arctic. IMO a few hours of downtime would not justify the investment cost for a brand new UPS. I get frequent short blackouts, too. I hooked up a used heavy machinery battery to my 600VA APC. It takes forever to fully charge but I have a very long runtime for my computer, DSL router and sound system. If I go the DC-to-DC route, it almost doubles the runtime.

Big ass heavy batteries + big ass battery charger + big ass DC-DC regulators might be OPs best bet. Being able to find cheap batteries and having the electrical knowledge to hook them up properly is the key here, I think.
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