Hi. I have the same problem.
The suppliers address is
Hans einhell ag,uk branch
32 craven court
winwick quay
warrington
cheshire
wa2 8qu
01925419400
fax 01925 419292
Roland j Long bristol, November 2009
if you look on ebay there's a booklet you can get explaining how to recharge your old batteries so they work as good as new
K, June 2009
if a battery will not charge its had it you need a new one, unless they are the new l ion ones they need to be completly flattened before you recharge