4 i have found some power banks with power supply of 20v 5a will those work or do i need a ups.
Alienware power bank.
3 i would help if i could know the power needs of alienware 15 r3 in numbers so i could buy a power supply that works for me.
So with a system like the alienware 15 you re probably stuck.
Aluratek s 10 000 mah portable battery charger utilizes advanced lithium ion rechargeable battery technology offering a robust power capacity with one 5v 1a and one 5v 2 0a output.
See two posts i wrote recently on this topic here and here about power banks with high draw laptops.
That definitely won t be a good idea if you have limited power available from the outlet.
And you definitely won t find a power bank capable of 240w output not even close.
This model comes with an ac adapter cable manual and case.
Small enough to fit in your pocket this lightweight and portable battery charger is perfect for on the go charging when you don t have the convenience of an ac outlet nearby.
42000 mah 146 wh power bank solar charger.
With a maximum power of 130w and two dc outputs not to mention a variety of dc adapters included this power bank is compatible with.