On 31/07/2014 01:35, John Rumm wrote:
On 30/07/2014 18:41, Peter Andrews wrote:
On 30/07/2014 18:05, DerbyBorn wrote:
Thinking about our next holiday - as many TVs now have USB Sockets
will it
be safe to charge my Samsung Tablet using the TV set (I know it has a
USB
Socket) - or do you suggest I play safe and take the charger?

It should be safe enough - but there is no guarantee that the USB socket
will have power when the TV is not in use. I got caught out by thinking
I could use the USB of my netbook, although plugged into the mains and
charging the USB wasn't powered hence one uncharged phone in the
morning!!

Some notebooks deliberately have one or more USB sockets with yellow
coloured inserts that are powered when the laptop is off, for just this
purpose. Alas they seem to be more the exception than the rule.



The last three laptops I have used had permanently on USB for charging.
None were coloured.
All could be enabled or disabled in the bios and/or set to use the
battery to charge when not plugged in.