Power Station charger.

Hi All,
A few days ago I noticed that the charger supplied with the Power Station
(http://www.telescopehouse.co.uk/page...ointerid=5BB8E
02EA50F4300800E0FF58870FF35&action=lnk) had split isolation coverings
immediately next to the moulded strain relief at the charger end. This was
no doubt caused by cramming the unit into the Power stations "storage"
compartment in the rear. Having a lot of computer related junk I looked into
all my old power supplies and found one which used to power a scanner I had
several years ago. The specifications just about fitted the bill so I tried
it. It seemed to charge the Power Station, although definitively it's hard
to say. The charging lights did light up on the Power Station when charging
and all lights came on showing a full charge. The new "charger" only ever
got barely warm to the touch which I took to be a good thing.
Being cloudy here, NWest UK, I have only charged it once and thought I'd ask
the knowledgeable folks on here if any damage will ensue if I carry on using
it.
The specs a
Supplied Charger; 220~240 volt 50hz/12 volt DC400ma.
Substitute Charger; 220~240 volt 50hz/12 volt DC1.2amp.
As you can see the difference is in the amps. The substitute charger is of a
much better construction than the original.
Any advice would be gratefully received.
TIA.
Dave.