NP5793 Backup power supply recommendations

I'm looking into getting a backup power supply for my 5793. They are $75 USD on Xotic. Is there any other option to get a cheaper supply? Can I get a universal supply and change the voltage to match in case I need to use it or is this dangerous?

Thank you!

 

You can use the Kensington K33197 universal power supply (I use the N3 tip on my M570RU). Plenty of power (120W), small, doesn't get hot, and flexible. I've purchased something like 6 of them now and haven't had any problems. The biggest hassle is figuring out which of the tips you need for a given device.

They're expensive if you buy them at full retail, but you can easily get them for the $25-$30 range if you look around for refurbished units (the latest Frys.com ad had them for $20 though I'm not sure what tips it came with).

 

Thanks man. I just hope it doesn't accidentally send out too much wattage and blow the system.

 

If you just make sure that the output of the backup PSU is equal to that of the orginal PSU there shouldn't be any problems (ofc. it needs to have a connection that fits ) In your case you would be looking for a unit that outputs 20V - 6.0A. You could also try looking for a backup in a local computerstore, some mainstream pc's uses the same PSU. Ive had a fujitsu that used one just like that for the NP5793.

Some universal psus got a switch of some kind, where you have to set the output, be sure to check that its in the right position before connecting it.

 

As long as the voltage is correct and the current (Ampage) is at least the same (can be higher) you'll be fine.

The PSU will never give your laptop too much current, your PC draws as much current as it needs at any one time, so any current 6A+ is fine as long as the voltage is exact.

 

I see. Thanks guys. Now its just a matter of finding one that will fit and isn't too expensive.