Uninterruptible for Raspberry Pi

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tangro2013-07-08 10:43:11

Batteries

tangro, 2013-07-08 10:43:11

I want to make sure that my RaspberryPi does not turn off when there is a power outage (at least 10-12 hours). Installing an ordinary computer uninterruptible power supply does not seem to me a very smart solution (it turns out three conversions of 200 V <-> 12 V, which is somehow stupid in terms of efficiency).

What exactly can be used so that it is powered from the outlet in normal mode, and when there is a power failure, it gives 12 V from the battery on the Raspberry Pi? There was an idea to take some kind of Power Bank, but I read that at least some of them do not roll . Is this true for everyone, or are there worthy models?

Any other ideas?

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4 answer(s)

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trueClearThinker, 2013-07-08
@trueClearThinker

There was a similar question: habrahabr.ru/qa/33887/

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Maxim Klyushkov, 2013-07-08
@m_klyushkov

Maybe something like habrahabr.ru/post/184356/ will do?
Or another battery with a more capacious battery and "through" charging.

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nochkin, 2013-07-08
@nochkin

Why are there three conversions with an uninterruptible power supply?
Socket -> Uninterruptible Power Supply -> RPi Power Supply -> RPi.
If the uninterruptible power supply does not like the size, then there are compact options like: picoUPS . The size will determine the battery.
For picoUPS you will need a regular 12 volt power supply (many monitors work from these), and for RPi you will need to convert 12 to 5, for example, with a small switching regulator like KIS-3R33S .
If you don’t want to solder anything, then the first option with an uninterruptible power supply (especially if you already have one) is quite a normal option.
Even a low-power uninterruptible power supply can last the RPi long enough.

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mishaspbru, 2013-08-02
@mishaspbru

If the power range of the RaspberryPi allows (at least 10-14 V), take a battery and a power supply (charger) with a current limit on the power of the RaspberryPi + 0.1 AB capacity. If there is more load, the charger will go into current limiting. When powered from the mains, the battery will be in the buffer + the load from the charger will be powered. When the network is turned off, the battery will power the RaspberryPi.
You just need a good feeder.
This is how all communication power systems are built. Powernet has chargers within 10 tr .