What product recommendation?

[solace2030]

Hi there.

I live in a remote area of New Zealand and the power supply is poor with frequent cuts. What product do you recommend for the following:

Power outages : Emergency PC shutdown (say 3-5 minutes).

Then, the ability to use the ups for charging phones for several times / days.

Plus ability to silence the audible alarms.

I currently have ES550, but it's not very adequate... the beeps every 30 seconds is terrible, plus it only provides power to phone for a very short time.