This says power supply pack. What does that mean? Does it require battery or is it AC
1965800
This means that it requires A/C. After plugging it in, it will run for approximately 2 1/2 hours and then shuts off automatically.
1965801
The unit is AC. It comes with the power pack that plugs into a wall socket.
209145
The power supply is for PC only. It is recommended for system using 2 or more graphic cards or several hard drives. Even if you PC do not have these configurations it will still work with your PC.
252839
Well, the rating info you provided has an AC (Alternating Current) component and a DC (Direct Current) component. Probably the AC is the rating for the AC Adaptor of your A2 Speaker. So I will ignore the AC rating. The battery pack produces DC which is what is produced by the AC adaptor to your A2 Speaker. So if the output from the AC Adaptor to your speaker is 15V, then the battery pack will work well for it. The only thing you need to verify is the tip. The pack comes with very many tips. I only use one, the one that matches my computer. But I can tell you from my own experience that the battery is worth more than the value placed on it. All the best Well, the rating info you provided has an AC (Alternating Current) component and a DC (Direct Current) component. Probably the AC is the rating for the AC Adaptor of your A2 Speaker. So I will ignore the AC rating. The battery pack produces DC which is what is produced by the AC adaptor to your A2 Speaker. So if the output from the AC Adaptor to your speaker is 15V, then the battery pack will work well for it. The only thing you need to verify is the tip. The pack comes with very many tips. I only use one, the one that matches my computer. But I can tell you from my own experience that the... » Read More Well, the rating info you provided has an AC (Alternating Current) component and a DC (Direct Current) component. Probably the AC is the rating for the AC Adaptor of your A2 Speaker. So I will ignore the AC rating. The battery pack produces DC which is what is produced by the AC adaptor to your A2 Speaker. So if the output from the AC Adaptor to your speaker is 15V, then the battery pack will work well for it. The only thing you need to verify is the tip. The pack comes with very many tips. I only use one, the one that matches my computer. But I can tell you from my own experience that the battery is worth more than the value placed on it. All the best « Show Less
842093
It comes with the AC adapter. I use this one on my work bench, so I use it plugged in. I have a different one at my desk that is battery powered. Both of them work well.
1704630
The battery is a backup in case of power interruption. From a practical viewpoint you need a low voltage power supply.
1954005
It has USB connector, can connect to DC or AC plugs, both included. Battery pack is no good as it drains in less than half an hour. I bought a 20A ext battery pack that lasts 3 to 4 hours.
503192
It must be plugged in to work. It is an inverter, not a portable power pack.
1770146
Not sure exactly... but I didn't need to get any additional power supply to make it work... just plugged it in.. and has been working great since purchase.
1242209
The one I bought has a power cord, not a battery pack. Sorry I couldn't help.
1953976
You can use either power source. It comes with an AC adapter. I purchased a separate battery pack for travel.
1446522
It is powered by the USB port on your computer. There is no AC connection to worry about.
723329
The power supply is an option. It uses a 9 volt battery (not supplied - no surprise there). When the power supply is used, the battery functions as a back-up.
1725802
It Pulls power from the AC unit, batteries are primarily for backup. Otherwise, no it can not be powered with a power supply.
2248779
your original charger works. the ac adapter connects to your computer, not the battery pack, unless you have some kind of external charge dock for the battery that i've not heard of..
421450
If you mean what voltage is the power supply which it uses, the answer is 110 -120 Volts AC.
2212886
I have never owned this power supply. So, I can not really tell you if it is or not. I have owned several computers over the years. I have heard any of my power supplies while they were running. SO! What do you think the answer should be here?? You have never had a power supply? So, you did not know they ran quiet. Come on buddy. Are you older then six?
1482789
No AC power required, runs off of USB power. Bought it because it uses Visioneer technology which I've used in the past and liked. Would have kept my old Visioneer but not compatible with W7.