How long will this power a laptop 3 connected simultaneously?
1533188
That all depends on the 12V power source, the inverter will run as long as you have power going into it
1533189
I wouldn't recommend using it to power a laptop. It's way more powerful than you need. It probably draws more power at idle than a lower-power inverter would. I got it to power a circular saw, electric chainsaw etc. and it can even power a wringer washer. I'd recommend getting a 12 volt adapter you can plug directly into the laptop just like the regular power supply. Usually you can just type in the manufacturer and model number of your laptop and search for the adapter that's compatible. Otherwise if you still want an inverter you can probably get by with something around 140 watts that plugs into a cigarette lighter socket. I wouldn't recommend using it to power a laptop. It's way more powerful than you need. It probably draws more power at idle than a lower-power inverter would. I got it to power a circular saw, electric chainsaw etc. and it can even power a wringer washer. I'd recommend getting a 12 volt adapter you can plug directly into the laptop just like the regular power supply. Usually you can just type in the manufacturer and model number of your laptop and search for the adapter that's compatible. Otherwise if you still want an inverter you can probably get by with something around 140 watts that... » Read More I wouldn't recommend using it to power a laptop. It's way more powerful than you need. It probably draws more power at idle than a lower-power inverter would. I got it to power a circular saw, electric chainsaw etc. and it can even power a wringer washer. I'd recommend getting a 12 volt adapter you can plug directly into the laptop just like the regular power supply. Usually you can just type in the manufacturer and model number of your laptop and search for the adapter that's compatible. Otherwise if you still want an inverter you can probably get by with something around 140 watts that plugs into a cigarette lighter socket. « Show Less
1533190
it will provide power until its source of 12 volt power dies, i have run mine all day day in day out for a year in harsh environment it powers my laptop, big printer, internet and phone chargers, air compressor at times, (run a direct connection with fuse to your battery for best results), use caution as it will warn you of low car battery but it keeps running and will kill it (my truck has 2 batteries). it is a great inverter, no problems
1533191
choose another inverter,Energizer or whistle dont buy this one worked few times then quit
2149568
I get about 3.5 to 4 hours. I think it also depends upon what you are doing on your laptop and also the power settings you are using (the brighter the more power and the amount of time you keep it awake) will determine how long it will last.
2131663
no its not enough to power a laptop, but it might PoWer a 7-inch tablet if you left it out in direct Sun for like 4 hours maybe 6 hours
613509
This hub does not include its own power supply so the *total* current it can supply among all four of its ports is the maximum the port it is plugged into can supply. For USB 3 ports on desktop computers, that is usually 900 ma (0.9 amps); for some laptops it may be only 150 ma (0.15 amps). So no, it will not supply anything even close to four amps on any of its ports, nor will it supply more than 0.9 amps on any one port when plugged into a normal USB 3 host port on a computer even if the other three of its ports are unused.
1389021
Depending on computer settings, this answer can vary. I seem to get about 3 hours of constant use on my laptop when unplugged from a power source.
1221793
...the unit charges at 18.5 volts.....as long your device being powered is less than 18.5 volts, the unit will charge itself and provide power via the usb or dc.....I'm doing it right now with this laptop I'm using....the powerbrick died on this laptop.....this laptop uses 12 volts so, the Poweradd can reasonably provide output to the laptop and charge itself at the same time.......I have another laptop that is 19 volts and the unit continually depleted while plugged in to the wall to charge.....but it still provided power to the laptop....
1599677
Though it's hard to answer without specific numbers, probably hours. It will power my pic and monitor for 20 minutes, you should be able to get 3-10 times that.
404143
No need for power. I haven't tried it on any other laptops, just my Leveno.
150901
Yeah that's sounds about right. it take 10 hours to about fully charge the battery unit with solar. the life of the laptop depends on the laptops power settings and what you are doing with it. I most use this device to charge cell phones and cameras etc...
366046
Yes, you need to use 2 usb ports for the extra power. The supplied usb Y cable has about 5 inches of slack between the plugs. If your laptop only has 1 usb on each side you will have to get an extension.
1776672
Tablets are no problem. Laptop at same time is probably ok. If you are just charging all 3, it should be fine. But, when running, today's "normal" laptops, (as apposed to high power gaming laptops) can draw as much as 150W. Most don't come near that. Check the small print on your laptop charger for power usage info. I have one PV150 running my DirecTv DVR and a 26" LCD TV with no problem. The other runs a HP 17" laptop. But, haven't tried charging tablets at the same time. What I love about it is it's quiet. No fan.
2227779
Yes but be careful how many bus power devices you plug in, if you run two or three you may have power issues.
2042839
about 4 hours on a USB port, 3.5 hours directly to AC, if you have a converter.
1925487
Considering the max current this thing can put out is 750 mA, Having data pins connected for fast charge will not make a difference
2258273
you could set up a timer on the power supply that is three volts to shut of then back on in 17 min timer this is a sealed computer box. So messing with that not advisable.
1456221
This model requires two usb connections. One for power and the other for data transfer. So it's probably around 500mA.
2095582
The standard is 500mA for USB 2.0 and 900mA for USB 3.0. Do the math, and you'll see that the power supply doesn't cut it for 24 USB 2.0 and 4 USB 3.0 ports. 24 x 500mA = 12A 4 x 900mA = 3.6A The power supply would need to be 15.6A at 5V. Since the power supply is only 4A at 5V, you're only going to be able to power four USB 3.0 devices (900mA x 4 = 3.6A) OR eight USB 2.0 devices (500mA x 8 = 4A). Perhaps Manhattan should do what Anker does and use a 12V adapter and whatever they do to undervolt/cut down their USB 3.0 9-port hub to 5V per port (that thing comes with a 12V, 5A power adapter! The brick is almost as big as most laptop power bricks!) Using the formula of Volts x Amps = Watts (5V x 15.6A = 78W), we can conclude that at 12V, only 6.5A would be needed (12V x 6.5A = 78W). It's a shame, though, as a 28-port USB hub is cool as all hell, but in practice, it doesn't work right unless you're using all self-powered devices (devices that have their own power adapters).