N/APosted on - 05/22/2015
I am trying to find a battery to be sued with the inverter in order to get the desktop PC on even during power outages and also during instances in remote places where power is not at all available. I am searching for batteries. The main specs are 12 V and current. To guess the current capacity of the Battery I have to find out how much does a typical Desktop PC consumes. Is there is any benchmark kind of data available? How to measure it at least if possible? I need the battery to support at least 8 hours of continuous desktop usage. Looking forward for your support.
How to choose battery for desktop computer typical
That battery is possibly capable of 85 amp-hours as this is the usual way of describing battery capacity. So, suppose the inverter needs 150 watts to operate the computer and cover its own losses.
1. With 12 V battery: 150 watts from a 12 volt battery would mean the current is 150 watts / 12 volts or 12.5 amps.An 85 amp hour battery would last about 7 hours at a current of 12.5 amps. (85AH / 12.5A = 6.8 hours).
2. With 14 V battery: 150 watts from a 14 volt battery would mean the current is 150 watts / 14 volts or 10.7 amps. An 85 amp hour battery would last about 8 hours at a current of 10.7 amps. (85AH / 10.7A = 7.94 hours) .
3. With 15v battery: 150 watts from a 15 volt battery would mean the current is 150 watts / 15 volts or 10.0 amps. An 85 amp hour battery would last about 8 hours at a current of 10.0 amps. (85AH / 10.0A = 8.5 hours) .
However, the actual current and battery capacity and inverter current would have to be measured to get a more accurate estimate. Don't forget the monitor power, though. This is not powered by the computer so it would need additional power. You could also consider using a laptop computer or replacing the hard drive in your computer with a solid state one.