zzsstt wrote:I've just connected up a new UPS,... the UPS is running at 93% efficiency. Which is OK, except that it occurs to me that inside the UPS is a battery charger,.....Is this the optimum way of doing this? Perhaps a 12VDC ATX power supply running directly from a battery might be more efficient? ....this is chasing "single watt" savings and therefore not financially viable. It's just for fun!
My office needs cooling in summer and a bit of heating in winter, because of the heat generated from the various computers and especially the "Cat Attracting" UPS's.
It is a marvel to see the cat balanced on top of the small UPS.. I am confident that my UPS's are not of the best kind..
...(well, they did come from ALDI..)
With all that heat, there is NO WAY that they are efficient.. I too am looking for that elusive alternative.. and have been thinking of a special PV system, made from old panels, charging batteries that power one of those UPS's... My 24/7 room heater would be GONE.. and the cat will be really P'eed off..