[time-nuts] Battery backup of frequency standards

[Poul-Henning Kamp]

I can recommend buying a so-called "battery-backed" powersupply for
atomics.  They are built to be usedin fire-alarms, burglar-alarms
etc, and consist of a power-supply that understands how to charge
SLA's and a box.  Mostly one has to buy the batteries separately.

They come in 12V and 24V versions.

Look for instance at RS-components 310-2058 

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