wrote:
Leaving aside the commments about it being cheaper to buy a new tool,
try http://www.a1-battery.co.uk/POWER_TO...OSCH/index.htm

Standard disclaimers about Chinese batteries apply:

$ whois a1-battery.co.uk

Domain name:
a1-battery.co.uk

Registrant:
3339.com - Golden Spider Network Co., Ltd.

Trading as:
PowerSmart Energy Limited

Registrant type:
Non-UK Corporation

Registrant's address:
Unit B, 8/F, Eastern Flower Centre
22-24 Cameron Road, TST
TST
Hong Kong
00000
Hong Kong

Theo