I've been very happy with APC SmartUPS 750XL units. Hook up as much or as little battery as you want. Internal 18AH or multiple 100+AH (in 24V strings) Haven't had a failure other than from an external source (Water, Mice) through multiple Chicago winters/summers. I know it's not as efficient as a pure DC plant, but I'm only putting out ~$70 for the UPS + batteries and don't have to worry about multiple voltages for different equipment.

On 2/21/2018 11:49 AM, Sterling Jacobson wrote:
I use Alpha FXM1100 for my fiber cabinets and four external batteries.

I need something a bit less for a smaller wall mount cabinet.

What are people using now days for small WISP cabinet UPS?

I need to power maybe a couple of 11W routers/switches and maybe 3-6 radios at 
around 10W peak each.

So maybe 150W power draw keep alive for a few hours.

Would be good if it's temperature tolerant and network manageable.

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