Hi John,
Since you haven't had any takers yet...
The advice from APC is that you should always keep the UPS plugged in to the mains, but switch it off when it doesn't need to be on. Switching it off means that it doesn't output power, but it continues to charge the batteries as necessary. The advantage of switching it off, as I understand it, is simply that if the power should go out the battery will drain much more slowly than if the UPS is on (it has to power itself, even if everything else is off).
Conversely, the best way to kill the batteries is to leave the UPS unplugged for a long time - this allows them to do a "deep discharge" which damages the cells.
Hope that helps,
Ross
On 07/10/2013 17:06, John Moore wrote:
Since you haven't had any takers yet...
The advice from APC is that you should always keep the UPS plugged in to the mains, but switch it off when it doesn't need to be on. Switching it off means that it doesn't output power, but it continues to charge the batteries as necessary. The advantage of switching it off, as I understand it, is simply that if the power should go out the battery will drain much more slowly than if the UPS is on (it has to power itself, even if everything else is off).
Conversely, the best way to kill the batteries is to leave the UPS unplugged for a long time - this allows them to do a "deep discharge" which damages the cells.
Hope that helps,
Ross
On 07/10/2013 17:06, John Moore wrote:
I recently inherited a rack which came with a UPS. I replaced the batteries and it seems to be working fine. I'm curious if I should always leave the UPS on even with the computer shut off or should I power it down when the system is not in use. At work I always leave the UPS on but I've found that almost every UPS I find on jobs has dead batteries. Does anyone have a recommended procedure that might extend the useful life of the UPS batteries?
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