AOA150 external battery CHARGER

I'm looking for an external CHARGER for AOA150 batteries (or
MAYBE I'm just looking for a special Acer-type socket that I can
have hooked onto some standard sort of charger, whichever is
cheaper - I wouldn't know - I know how to push the little key
thingies to make this message appear on the screen and how
to push plugs and cards into the holes in the case to connect
external things, the AC adaptor-come-charger, etc., but not
a thing about the actual works).

By "external CHARGER" I mean a device that will charge AOA150
batteries OUT OF THE COMPUTER so I can leave one battery
behind charging by itself while I'm out using another one in the
computer and swap them over as I pass by the office from time
to time.

Does such a thing exist? Can a cheaper version be fabricated
by someone I might persuade to solder things for me? Etc.

Any advice appreciated.

 

http://boston.craigslist.org/gbs/sys/1495187887.html
Look here, a confirmed example. Yes, it seems there is one.

http://cgi.ebay.com/External-battery-ch ... 2004r23998
Another example on Ebay.

But why do you ask? I do some Google search and found something.
It seems you have not done homework on Google.
I think you look at standard stories, but big chance they have nothing.
Or you have choosen wrong search words.

The Ebay link above is also special seller for external charging batteries.

 

Thankyou.