🚀 go-pugleaf

Andrew Taylor wrote:

UPS:

> which to buy
> Are the batteries constantly recharging?
> How much extra will it cost on my electricity bill?
> At �70 how much uptime will I get with it?
> More than a minute?
> If I was to buy an old second hand one which would be a good buy?
> Is there anything I need to be wary of?

There are a lot of subtle points. Have a look at manufacturers' 
literature, which is probably available on web sites. APC is one name 
to look for; their equipment is OK. More capable UPS's permanently 
supply conditioned power (no spikes or noise); others run equipment 
from raw mains power, and switch in the event of failure.

Batteries are kept fully charged, and recharge as required. I've 
never considered the effect on energy consumption (bill), but wouldn't 
have thought it would make a big difference. The uptime you get 
depends upon the UPS rating and equipment's actual power consumption. 
Usually you'll get at least 10 minutes at rated power, and 
proportionally more if you use less power, but check individual UPS 
specification.

If you buy secondhand check the battery condition; they are expensive 
to replace. If not local, check delivery cost.

HTH,
-- 
Michael Salem