I use a 45 watt power supply instead of a 75 watt power supply for my laptop

I have a toshiba laptop that came with a 75 watt power supply 15
volts / 5 A. When traveling I have been using an older smaller power
supply I had from another toshiba laptop 45 watts 15 volts 3A.

It works fine - is there any reason I should stop using it?

Thanks.

 

probably be OK until the damn thing explodes

 

No, not if it's working ok.

 

Since the original PS was rated for an additional 2 A current, it's possible
that under the worst case scenario (discharged battery, running HD and CPU
intensive software that keeps the cooling fan running), your laptop could
tax the ability of the PS to keep up. It could damage the PS or possibly
cause computer instability. To avoid that problem, if your battery is nearly
discharged, I'd charge it while the laptop is off.

 

I have a toshiba laptop that came with a 75 watt power supply 15

It's only a problem at 100% CPU and charging the internal battery at the
same time.

When the internal battery is full, it should be no problem


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Try playing a dvd, or somehow otherwise get hard drive, cd drive, cpu
and gpu under full load simultaneously and see if it crashes. If it
doesn't, you're good to go. You might want to yank the battery, to
give you the full worst case scenario.

 

Thanks for all the replies. I appreciate the help. I have not
noticed any issues with playing dvd's on the power supply while
battery is charging.